首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
What is the relationship between violence and sports? Psychologists say that there are many reasons ...
查看本题答案
包含此试题的试卷
高中英语《》真题及答案
点击查看
你可能感兴趣的试题
Youshouldlearntobeagoodlistenerbecausethat’s______
where
how
which
what
Directions: Title:TheTeacher-StudentRelationship
Whatwillbethephaseanglerelationshipofasix-polethre
60
120
180
360
Directions:Title:TheTeacher-StudentRelationshipOut
—What'syourfriend's________—Shelikestolisteningtom
team
hobby
relationship
education
TherelationshipbetweenU.S.andIranisgettingtense___
it
that
which
what
Theirrelationshiphasreachedapointintheirmarriage__
which
that
what
where
Whatdoyouthinkistherelationshipbetweenlanguageandt
Itisonly______youunderstandwhatyourparentsdotoyou_
that; what
when; that
which; where
how; what
Tomaintainanicerelationshipbothsidesareadvisedtofo
what
that
which
whom
AtwhatpointismeaningextractedfromthewordsinatextTh
Whatdoyouthinkistherelationshipbetweenthearbitrari
ItistheAmerica’ssellingweaponstoTaiwancastashadowo
what
which
that
where
听第7段材料回答第89题听力内容暂无Whatistheprobablerelationshipbet
Schoolmates.
Colleagues.
Roommates.
Itisonly_______youunderstandwhatyourparentsdoforyo
that; what
when; that
which; where
how; what
请听第8段材料回答第12至14题.Whatisthepossiblerelationshipbetw
Parent and teacher.
Brother and sister.
Husband and wife.
听第8段材料回答第10至12题Whatistheprobablerelationshipbetwee
Driver and passenger
Husband and wife.
Fellow workers.
________PremierWenJiabaovisitedtheUnitedStatesledt
Which
What
That
As
----Whatisthe_______betweenthetwomen?----Theyareco
relationship; every day
friendship; everyday
relationship; everyday
friendship; every day
Whenyou'veseenacouplefightingorhavingapityargument
热门试题
更多
Ifyou’reamaleandyou’rereadingthiscongratulations!You’reasurvivor.Accordingtostatisticsyou’remorethantwiceaslikelytodieofskincancerthanawomanandninetimesmorelikelytodieofAIDS.Assumingyoumakeittotheendofyournaturaltermabout78yearsformeninAustraliayou’lldieonaveragefiveyearsbeforeawoman.There'remanyreasonsforthis--typicallymentakemorerisksthanwomenandaremorelikelytodrinkandsmokebutperhapsmoreimportantlymendon’tgotothedoctor.Menaren'tseeingdoctorsasoftenastheyshouldsaysDr.GullottA.Thisisparticularlysofortheover-40swhendiseasestendtostrikE.Accordingtoarecentsurvey95％ofwomenagedbetween15andearly49sseeadoctoronceayearcomparedto70％ofmeninthesameagegroup.Alotofmenthinkthey’reunbeatableGullottasays.TheyonlycomeinwhenafrienddropsdeadonthegolfcourseandtheythinkGeezifitcouldhappentohimThenthere’stheostrich鸵鸟approach.SomemenarescaredofwhatmightbethereandwouldrathernotknowsaysDr.RossCartmill.MostmengettheircarsservicedmoreregularlythantheyservicetheirbodiesCartmillsays.Hebelievesmostdiseasesthatcommonlyaffectmencouldbeaddressedbypreventivecheck-ups.Preventionischeaperinthelongrunthanhavingtotreatthediseases.Besidesthefinalcostisfargreaterit’scalledprematuredeath.Whydoestheauthorcongratulatemalereadersatthebeginningofthepassage?A.TheycanlivelongerthantheyexpecteD.B.TheyaresuretoenjoyalongerandhappierlifE.C.TheyhavelivedlongenoughtoreadthisarticlE.D.Theyaremorelikelytosurviveseriousdiseasesnow.Whichoftheauthor’sstatementsisthemostimportantreasonthatmendiefiveyearsearlieronaveragethanwomenaccordingtothepassage?A.Mendrinkandsmokemuchmorethanwomen.B.Mendon’tseekmedicalcareasoftenaswomen.C.Menaremorelikelytosufferfromdeadlydiseases.D.Menaren’tascautiousaswomeninfaceofdanger.WhichofthefollowingbestcompletestheunderlinedsentenceGeezifitcouldhappentohiminPara4?A.itcouldhappentometoo.B.itwouldbeabigmisfortunE.C.Ishouldavoidplayinggolf.D.Ishouldconsidermyselflucky.WhatdoesDr.RossCartmillmeanbytheostrichapproachinPara5?A.Acasualattitudetowardsone’shealthconditions.B.Anewtreatmentforcertainpsychologicalproblems.C.RefusaltogetmedicaltreatmentforfearofthepaininvolveD.D.Unwillingnesstofindoutaboutone’sdiseasebecauseoffear.
Everthoughtyou’dgettoexperiencethesmellofancientEgyptianqueenCleopatra’shairorthescent气味ofthesun?VisitorstotheRegVardyGallerywillsoonbeabletodojustthat.ThegalleryatSunderlandUniversityEnglandisholdinganewexhibitionIfThereEverWas.Itfocusesonscentratherthansight.Theinnovative创新的ideaisthebrainchildofcurator馆长RobertBlackson.HisinspirationcamefromreadingthebookFastFoodNation.Thebookdiscussedtheuseofartificialchemicalstoflavorthingssuchasmilkshakesmakingthemsmellandtastelikestrawberrieswhenthey’renotactuallymadefromthem.A.smellcanoftenconjureup召唤memoriessuchasschooldinnersorachildhoodholidaybytheseabutthesmellsondisplaywillallowvisitorstoexperiencesmellstheirnoseswon’thavebeenabletopickoutbeforE.There’sawholevarietyofdifferentsmellsincludingsomeextinctflowersexplainsBlackson.Somehavebeengoneforhundredsofyears.Oneextraordinaryfragrance香气istheaftermath灾难的后果ofthefirstatomicbombdroppedonJapanonAugust61945.ThereisalsothesmellofClepatra’shairbasedonincense熏香thatwaspopularamongancientEgyptians.TheSovietMirspacestationwhichburntupintheatmospherein2001smellsofcharred烧焦的materialthespacestationcaughtfire.Amongthestrangersmellsisthesurfaceofthesun.Itishardtosumup.ItisanatmosphericsmelllikewalkingintoaroomwhenthesunhasbeenpouringinsaysBlackson.Itgivesafreshnessasunkissedfeelwithabitofmetal.Ifyoucansaysomethingsmellshotthisisit.A.teamof11includingperfumedesignershavebeenworkingonrecreatingthesmellsfortheexhibition.JamesWongabotanist植物学家atBotanicGardensConservationInternationalUKhelpedintherecreationofthesmellsoffourextinctfloweringplants.Hedidthisbycloselylinkingtheextinctflowerswiththesmellsofexistingones.Withthehelpofhistoricalreportsofhowtheextinctflowerssmelledhewasabletoremixthearomas芳香.TheexhibitionrunsuntilJune6.Fourteenextinctandimpossiblesmellsareondisplay.Whatmightbethebesttitleofthepassage?A.TheRegVardyGalleryB.EgyptianqueenCleopatra’shairC.A.visittoanewexhibitionD.ThescentsofancientEgyptVisitorscanenjoyallofthefollowingscentsattheRegVardyGalleryEXCEPT.A.thescentofancientEgyptianqueenCleopatra’shairB.thesmellsofcharredmaterialoftheSovietMirspacestationC.thescentofhavingachildhoodvacationbytheseaD.thesmelloftheaftermathofthefirstatomicbombdroppedonJapanWhichofthefollowingisTRUEaccordingtothepassage?A.VisitorsgotoRegVardyGallerytoenjoybeautifulsights.B.JamesWongmanagedtoremixthearomasbyreferringtosomehistoricalreports.C.TheexhibitionwilllastuntilJuly6.D.Thescentsvisitorswillsmellarefoundinthetomb坟墓oftheancientEgyptianqueenCleopatrA.Inwhichsessionareyoulikelytoreadthepassageinanewspaper?A.ScienceB.EducationC.EntertainmentD.Economy
EWhenanantdiesotherantstakeitoutofthenestoftenwithinanhourafteritsdeath.Thisbehaviorinterestsscientistsandtheywonderhowantsknowforsure—andsosoon—thatanotherantisdeaD.Onescientistrecentlycameupwithawaytoexplainthisantbehaviour.Dong-HwanChoeisabiologistascientistwhostudiesanimalsandplants.HefoundthatantshaveachemicalontheoutsideoftheirbodiesthatsignalstootherantsI'mdead—takemeawaywhenitisdeaD.Butthere'saquestiontoanswer:Asweknowifanantisdeaditstopsmoving.Butwhenanantissleepingorknockedunconsciousitisalsonotmoving.Howeverotherantsdon'tmovethelivingantoutofthenest.Howdotheyknowthisantisnotdead?ChoefoundthatantshaveanotherchemicalontheirbodieswhichtellsnearbyantssomethinglikeWait—I'mnotdeadyetwhenitisnotdeaD.ChoesuspectsthatwhenanantdiesthechemicalthatsaysWaitI'mnotdeadyetquicklygoesaway.Whenotherantsdetectthedeadchemicalwithoutthenotdeadyetchemicaltheymoveawaythebody.TotesthistheoryChoeandhisteamputdifferentchemicalsonants.WhenthescientistsusedtheI'mdeadchemicalotherantsquicklymovedthetreatedantaway.WhenthescientistsusedtheWait—I'mnotdeadyetchemicalotherantsleftthetreatedantalonE.Choebelievesthisbehaviorshowsthatthenotdeadyetchemicaloverridesthedeadchemicalwhenpickedupbyotherants.Andthatwhenanantdiesthenotdeadyetchemicalfadesaway.Othernearbyantsthendetecttheremainingdeadchemicalandremovethebodyfromthenest.Understandingthisbehaviorcanhelpscientistsfigureouthowtostopantsfrominvadingnewplacesandcausingproblems.57.Whatisthefunctionofthefirstparagraph?A.Leadingthefollowingparagraphs.B.ShowingthemainideaofthepassagE.C.IntroducingthebackgroundofthepassagE.D.GivingasummaryofthepassagE.58.Whichofthefollowinghastheclosestmeaningtotheunderlinedwordoverridesinthefourthparagraph?A.isweakerthanB.isstrongerthanC.isbetterthanD.isworsethan59.Whatcanwelearnfromthepassage?A.Livingantscanalsobetakenawaywhentheyarenotmoving.B.Whenanantdiesitcantellothersusingacertainchemical.C.A.livingantcanpretendtobedeadusingaspecialchemical.D.Antsoftenusechemicalstocommunicatewitheachother.60.WhichofthefollowingdescriptionsaboutDong-HwanChoeisright?A.Choedidthisstudyinordertostopantsfrominvadingnewplaces.B.Choeisabiologistwhoisonlyinterestedinanimalsespeciallyinants.C.Choefirstcameupwithanideatoexplainthisantbehaviorandthendidsometeststoprovehistheory.D.Choedidtheresearchonthisantbehavioronhisown
Ⅲ.阅读理解NewYorkwasveryproudofitselectrictrolleys无轨电车attheturnofthecentury.TheywerethelatestwaytogetarounD.ButMaryAndersonwhovisitedNewYorkfromhernativeBirminghamAlabama1902didnotlikethematall.ShethoughttheywerenotsafE.ItwasnotthatthedriverswerebaD.Itwasthewindshields挡风玻璃.Inthosedaysdriversrubbedtheirwindshieldswithdamptobacco.Thiswassupposedtohelpoffrainandsnow.Butitdidnotworktoowell.AndersonwatchedasthetrolleydriversstruggledtoseeoutoftheirwindshieldsandcameupwithanideA.BackinAlabamaAndersonmadethefirstwindshieldwiperbyfixinghandle把手toarubberblade片.ThisinturnwasfixedtothewindshielD.Thedrivershadtoturnthehandlebackandforthbyhandtomakethebladewipeofftherain.ButitworkeD.AndtravelinbadweatherwasmadealittlesaferforeveryonE.36.Whichofthefollowingbestgivesthemainideaofthispassage?A.HowMaryAndersonvisitedNewYork?B.Howdriverscleanedtheirwindshields?C.Howthefirstwindshieldwipercameintobeing?D.Howwindshieldwiperwasmade?37.ThoughNewYorkershadgreatprideinelectrictrolleysMarydislikedthembecauseshethought______________.A.theyweredangerousB.theykeptoffrainandsnowC.theirwindshieldswerenotgoodD.theirdriverswereinexperienced38.Tostoprainandsnowcomingonthewindshieldsatrolleydriverhadto_______.A.workhardB.seeoutofthemclearlyC.struggleinthetrolleysD.usedamptobaccotocleanthem39.WhichofthefollowingisNOTtrueaccordingtothepassage?Thewindshieldwiperhelpedkeepofftherain.Thewindshieldwiperwasturnedbythedriver.TherubberbladewasfixedtothewindshielD.ThewindshieldwiperwasmadeinAlabamA.
Overthelast70yearsresearchershavebeenstudyinghappyandunhappypeopleandfinallyfoundouttenfactorsthatmakeadifferencE.Ourfeelingsofwell-beingatanymomentaredeterminedtoacertaindegreebygenes.Howeverofallthefactorswealthandagearethetoptwo.Moneycanbuyadegreeofhappiness.ButonceyoucanaffordtofeedclotheandhouseyourselfeachextradollarmakeslessandlessdifferencE.Researchersfindthatonaveragewealthierpeoplearehappier.Butthelinkbetweenmoneyandhappinessiscomplex.Inthepasthalf-centuryaverageincomehassharplyincreasedindevelopedcountriesyethappinesslevelshaveremainedalmostthesamE.Onceyourbasicneedsaremetmoneyonlyseemstoincreasehappinessifyouhavemorethanyourfriendsneighborsandcolleagues.Dollarsbuystatusandstatusmakespeoplefeelbetterconcludesomeexpertswhichhelpsexplainwhypeoplewhocanseekstatusinotherways-scientistsoractorsforexample-mayhappilyacceptrelativelypoorly-paidjobs.InaresearchProfessorAlexMichalosfoundthatthepeoplewhosedesires-notjustformoneybutforfriendsfamilyjobhealth-rosefurthestbeyondwhattheyalreadyhadtendedtobelesshappythanthosewhofeltasmallergap差距IndeedthesizeofthegappredictedhappinessaboutfivetimesbetterthanincomealonE.ThegapmeasuresjustblowawaytheonlymeasuresofincomE.saysMichalos.AnotherfactorthathastodowithhappinessisagE.OldagemaynotbesobadGivenalltheproblemsofaginghowcouldtheelderlybemoresatisfiedasksProfessorLauraCarstensen.InonesurveyCarstenseninterviewed184peoplebetweentheagesof18and94andaskedthemtofilloutanemotionsquestionnairE.ShefoundthatoldpeoplereportedpositiveemotionsjustasoftenasyoungpeopleSomescientistssuggestolderpeoplemayexpectlifetobeharderandlearntolivewithitorthey’remorerealisticabouttheirtimerunningoutolderpeoplehavelearnedtofocusonthingsthatmakethemhappyandletgoofthosethatdon’t.Peoplerealizenotonlywhattheyhavebutalsothatwhattheyhavecannotlastforevershesays.Agoodbyekisstoahusbandorwifeattheageof85forexamplemaybringfarmorecomplexemotionalresponsesthanasimilarkisstoaboyorgirlfriendattheageof20.72.Accordingtothepassagethefeelingofhappiness.A.isdeterminedpartlybygenesB.increasesgraduallywithageC.haslittletodowithwealthD.ismeasuredbydesires72.Someactorswouldliketoacceptpoorly-paidjobsbecausethejobs.A.makethemfeelmuchbetterB.providechancestomakefriendsC.improsetheirsocialpositionD.satisfytheirprofessionalinterests74.Agedpeoplearemorelikelytofeelhappybecausetheyaremore.A.optimisticB.successfulC.practicalD.emotional75.ProfessorAlexMichalosfoundthatpeoplefeellesshappyif.A.thegapbetweenrealityanddesireisbiggerB.theyhaveastrongerdesireforfriendshipC.theirincomeisbelowtheirexpectationD.thehopeforgoodhealthisgreater
第三部分阅读理解共20小题每小题2分满分40分阅读下列短文从每题所给的四个选项A.B.C和D中选出最佳选项Snakesbiteanestimated5.5millionpeopleworldwideeachyear.Expertssaytensofthousandsofpeoplediefromvenompoisoning.Anuntreatedorincorrectlytreatedbitemightrequiretheremovalofabittenfootforexampleoranarm.Eachyeararound400000amputationsaretheresultofsnakebites.LastyearforthefirsttimetheWorldHealthOrganizationaddedsnakebitestoitslistofneglectedtropicaldiseases.Thisrecognitionaimstobringgreaterattentiontotheproblem.Scientistsknowofabout3000kindsofsnakes.About600ofthemarevenomous.Thesearemostoftenfoundinruralareasintropicalclimates.AsiaandAfricahavethehighestnumberofsnakebites--togetherabout4millionayear.LatinAmericaandislandsintheSouthPacificfollow.Thehighestnumberofvictimsareagriculturalworkers.Snakebitesarealsocommonamongfishermenhuntersandchildren.Manyvictimsliveinareaswithpoorornon-existenthealthcaresystemsandwhereanti-venomtreatmentsareoftennotavailablE.Anti-venomistheonlycurE.Butexpertssayanti-venomtechnologiesandtheiruseneedtobeimproveD.Problemsincludeashortageofmanufacturersandthehighcostoftreatment.Alsothereisawidespreadlackofknowledgeamonglocalhealthworkersabouthowtouseanti-venoms.Thetreatmentscancausedangerousandevendeadlyreactionsifnotusedcarefully.Anti-venomcontainsproteins蛋白质fromanimalssuchashorsesorsheep.Theanimalsareinjectedrepeatedlywithoneormoredifferentsnakevenomstoproduceimmunity免疫力.TheLancetMedicalJournalrecentlypublishedaseriesofreportsonsnakebitepreventionandtreatmentDavidWarrellattheUniversityofOxfordinEnglandco-wroteoneofthem.HepraisedeffortsbytheWHOtoestablishcommonpracticesfortheproductionregulationandcontrolofanti-venom.ButhesaysmoremustbedonE.Theauthorssaycommunityeducationprogramscouldhelppreventsnakebitesbyteachingpeoplehowtoavoidthem.TheyalsosuggestactionslikeprovidingprotectivebootstowearwhileworkinginfieldsandnotsleepingonthegrounD.AlsoimportantisprovidinginformationaboutwheredangeroussnakesaremostlikelytoliveandwhentheyaremostactivE.56.What'sthemeaningoftheunderlinedwordamputationsinParagraph1?A.removalsofone'sarmsorlegsB.deathscausedbyinfectionC.injuriesofsnakebitesD.famesofacelebrity57.WhydidWHOaddsnakebitestoitslistofneglectedtropicaldiseases?A.Towarnpeopleofthedangerofsnakes.B.Toencouragepeopletoprotectwildanimals.C.ToaskpeopletopaymoreattentiontothiskindofdiseasE.D.Tostudytheproblemoftropicalweatherconditions.58.WhichofthefollowingisTrueaccordingtothepassage?A.Thevictimswouldn’tbeinjurediftheyhadbetterhealth-caresystems.B.Anti-venomtechnologiesandtheirusesaremedicallysafeandperfect.C.Patientsneedtopayalittleiftheygettreatedwiththeanti-venoms.D.Thelocalhealthworkersneedfurthertrainingonhowtouseanti-venoms.59.Theanimalsareinjectedwithdifferentsnakevenomsbecause_______.A.theyhavebeenbittenbyvenomoussnakesB.venomscanhelptocuretheirdiseasesC.thiscanhelpproducetheimmunityD.medicalexperimentsarebeingcarriedout
Motherhoodmaymakewomensmarterandmayhelppreventdementia痴呆inoldagebybathingthebraininprotectivehormones荷尔蒙U.S.reseachersreportedonThursday.TestsonratsshowthatthosewhoraisetwoormorelittersofpupsdoconsiderablybetterintestsofmemoryandskillsthanratswhohavenobabiesandtheirbrainsshowchangesthatsuggesttheymaybeprotectedagainstdiseasessuchasAlzheimer’s早老痴呆症.UniversityofRichmondpsychologyprofessorCraigKinsleybelieveshisfindingswilltranslateintohumans.Ourresearchshowsthatthehormonesofpregnancy怀孕areprotectingthebrainincludingestrogen雌激素whichweknowhasmanyneuroprotective保护神经的effectsKinsleysaiD.It’sratdatabuthumansaremammalsjustliketheseanimalsaremammalsheaddedinatelephoneinterview.Theygothroughpregnancyandhormonalchanges.KinsleysaidhehopedpublichealthofficialsandresearcherswilllooktoseeifhavinghadchildrenprotectsawomanfromAlzheimer’sandotherformsofage-relatedbraindeclinE.WhenpeoplethinkaboutpregnancytheythinkaboutwhathappenstobabiesandthemotherfromtheneckdownsaidKinsleywhopresentedhisfindingstotheannualmeetingoftheSocietyofNeuroscienceinOrlandoFloridA.Theydonotrealizethathormonesarewashingonthebrain.Ifyoulookatfemaleanimalswhohavenevergonethroughpregnancytheyactdifferentlytowardyoung.Butifshegoesthroughpregnancyshewillsacrificeherlifeforherinfant—thatisagreatchangeinherbehaviorthatshowedingeneticalterations改变tothebrain.HowdoscientistsknowMotherhoodmaymakewomensmarter?A.Someresearchershavetoldthem.B.Manywomensayso.C.Theyknowitbyexperimentingonrats.D.TheyknowitthroughtheirownexperiencE.Whatdoesthephraselittersofpupsmeaninthesecondparagraph?A.Babyrats.B.Animals.C.Oldrats.D.Grown-uprats.Whatcanprotectthebrainofawomanaccordingtothepassage?A.Estrogen.B.Thehormonesofpregnancy.C.MoreexercisE.D.Takingcareofchildren.It’sratdatabuthumansaremammalsjustliketheseanimalsaremammals.Whatdoesthesentencesuggest?A.Theexperimentsontheratshavenothingtodowithhumans.B.Theexperimentsontheratsareveryimportantforanimals.C.Theexperimentsontheratsaremuchthesameonhumans.D.Theexperimentsontheratsaremuchthesameonotheranimals.Whichtitleisthebestforthispassage?A.DoYouWanttoBeSmarter?B.MotherhoodMakesWomenSmarterC.MysteriousHormonesD.AnImportantStudy
WhentheresearchontheeffectofelectricfieldsonE.coliwasbegunin1962itwasessentialthatabiologist–specificallyamicrobiologist–contributedtotheproject.Shedoesnotwanthernameusedbecauseshedidnotbecomeascientificresearcherforfamebutratherforthechallengeofputtingpiecesofascientificpuzzletogether.Asagirlshewasinspiredbytheworkofgreatscientists:shereadthestoryofthecureofmalariainthePanamaCanal;shealsoreadabiographyofMadameCuriE.Theseaccountsinspiredhertopursueacareerinscientificresearch.AfterhighschoolsheworkedfortheMichiganDepartmentofHealthwhereshedidresearchinbiologyandmicrobiology.Therehercolleaguessawhertalentandencouragedhertopursuescienceasacareer.Shewentontoearnabachelor’sdegreefromMichiganStateUniversityin1948inmedicaltechnology.WhenshebeganworkingatMichiganStateintheearly1960sshewasbalancingthedemandsofscientificresearchwiththeneedsofherfamily.Atthattimebothofherchildrenwereinschool.Shewouldworkinthelabinthemorningwhiletheywereatschoolgohometoseethematlunchreturntothelabfortheafternoongohomefordinnerandreturntothelabintheeveningifnecessary.Atthattimetherewerefewerwomenscientistsworkingthantherearetodaybutsheencounteredseveralinhercareer.AttheMichiganDepartmentofHealthmanyofhercolleagueswerewomenandconsequentlyshedidnotfeelisolatedbecauseofhergender–nordidshefeelthatshewastreateddifferentlybecauseshewasawoman.WhileworkingatMichiganStateshealsofeltthatshewastreatedwithrespectbyherpeers.HercolleaguesamongthemdoctorsandPh.D.chemistsalltreatedherasanequal.OnthewholeshebelievesthatthereisnotagreatdealofdifferencebetweenmenandwomeninsciencE.56.Whydoesthewomanscientistrefusetoletouthername?A.Becausesheisashylady.B.Becauseshedoesn’tmindherfamE.C.Becauseshenevertakesprideinherresearch.D.BecausesheneverworksforherfamE.57.Whatisthenobleladyscientistreallyinterestedin?A.Thelifestoriesofotherwomenscientists.B.Biologyandmicrobiology.C.Thesecretofthesuccessoftheotherscientists.D.Thedifferencebetweenmenandwomenscientists.58.Whohelpedandencouragedhertocarryonherscientificresearch?A.Herfamilyandfriends.B.MadameCuriE.C.Hercolleaguesandotherscientists.D.Someoftheofficials.59.Whatisthewholepassagemainlyabout?A.Thelifestoryofafamouswomanscientistwithgreatsuccess.B.Abriefintroductionaboutanunknowngreatwomanscientist.C.Thenewdevelopmentofaspecialwomanscientist.D.Thesecretofaninfamouswomanscientist.
Beforeanewtypeofairplanegoesintoserviceeverypartofitistestedagainandagain.Buttherearetwoteststhataremoreimportantthanalltheothers.Thefirstiscalledthetanktest.A.modernairplanemustflyveryhighinthesky.AirmustbepumpedintotheplanesothatthepassengerscanbreathE.Themetalstructure结构oftheplanehastobeverystrongforthisreason.WhentheplaneisfilledwithairtheairpressesagainsttheskinoftheplaneinsidE.Thepressure压力onasmallwindowislikeahugefootthatistryingtogetout.Ifasmallpartoftheplaneweretofailtheplanewouldexplodeinthesky.Totestthestructureoftheplanetheplaneisloweredintoahugetankorcontainerofwater.Thenitisfilledwithair.Thepressureinsidetheplaneisgreaterthaniteverwillbewhenitishighupintheair.Finallythereisanexplosion.ThisdoesnotcausesomuchdamageinsidethewatertankasitwouldanywhereelsE.Engineerscandiscoverwhichpartoftheplanehasbroken.Thenthatpartismadestronger.Themostdangeroustesthappenswhenthenewplaneisgoingthroughtestflightsintheair.Thetestpilotmustfindoutexactlywhathappenswhentheengines发动机areallshutoffatoncE.TheplanebeginstofalllikeastonE.Itisthepilot’sjobtofindouthowhecangetcontroloftheplaneagain.Thesetwotestsareexamplesofhowplanesaremadesafebeforetheyevercarrypassengers.Bydoingthetanktesttheengineerscanfindout___________.A.thepressureinsideandoutsidetheplaneB.thestrengthoftheplanestructureC.theamountofairintheplaneD.thepoweroftheairplaneenginesWhatwillhappentotheplaneunderthetanktest?A.Itwillbebroken.B.Itwillbemadestronger.C.Itwillbefilledwithwater.D.Itwillbetestedbypilots.Accordingtothetextwhyaretestflightsmostdangerous?A.TheenginesmaybedamageD.B.ThepilotmaylosecontroloftheplanE.C.Theplanemayexplodeintheair.D.ToomuchairmaygetintotheplanE.Whatmightbethemostsuitabletitleforthetext?A.TwoImportantTestsonAirplanesB.TheDangerofTestingAirplanesC.TheImportanceofFlyingSafelyD.HowAirplanesAreMadeandTested
Dogswag摇摆theirtailsindifferentdirectionsdependingonwhethertheyareexcitedandwantingtomoveforwardorthreatenedandthinkingofmovingbackastudyhasfounD.ResearchersinItalyexaminedthetailwaggingbehaviourof30dogscatchingtheirresponsestoarangeofstimuli刺激物withvideocameras.Toconductthestudytheychose15maledogsand15femaleonesagedbetweenoneandsixyears.ThedogswereallfamilypetswhoseownershadallowedthemtotakepartintheexperimentatBariUniversity.Thedogswereplacedinalargewoodenboxwithanopeningatthefronttoallowforthemtoviewvariousstimuli.TheyweretestedoneatatimE.TheresearchersledbyProfessorGiorgioVallortigaraoftheUniversityofTriestefoundthatwhenthedogswereshowntheirowners—apositiveexperience—theirtailswaggedenergeticallytotherightsidE.Whentheywereshownanunfamiliarhumantheywaggedtotherightbutwithsomewhatlessenthusiasm.Theappearanceofacatagaincausedaright-handsidewagalthoughwithlessintensityagain.TheappearanceofalargeunfamiliardogsimilartoaGermanshepherdchangedthedirectionoftailwaggingtotheleft.Researcherssupposedthedogwasthinkingofmovingback.Whenthedogswerenotshownanystimulitheytendedtowagtheirtailstotheleftsuggestingtheypreferredcompany.Whilethechangesinthetailwaggingwerenoteasilynoticedwithouttheaidofvideoitwasthoughtthatthefindingscouldhelppeoplejudgethemood心情ofdogs.Computerandvideosystemsforexamplecouldbeusedbyprofessionaldogtrainerstodeterminethemoodofdogsthattheywererequiredtoapproach.71.Thevideocameraswereusedtocatchthedogs’responsesbecause.A.itwaseasiertocatchthedogs’responsechangesinthetailwaggingB.thedogswereputinthewoodenboxesandtestedoneatatimE.C.theyenabledthedogs’ownerstoknowabouttheirdogs’habitD.thedogswaggedtheirtailsindifferentdirectionswhentheywereindifferentmoods72.Theunderlinedwordintensityinthepassagemeans.A.surpriseB.worryC.excitementD.interest73.Whentherearenostimuliadogwill.A.wagtotheleftB.wagtotherightC.notwagatallD.wagtotheleftandthentotheright74.Theunderlinedwordtheyrefersto.A.thedogsB.thetrainersC.thesystemsD.theresearchers75.Thepurposeofdoingtheexperimentis.A.totraindogsfortheirownersB.tohelppeoplejudgethemoodofdogsC.tohelpdogsfindcompanyD.tohelppeoplechoosetheirpetdogs
PerhapsthemostfamoustheorythestudyofbodymovementwassuggestedbyProfessorRayBirdwhistell.HebelievesthatphysicalappearanceisoftenculturallyprogrammeD.Inotherwordswelearnourlooks—wearenotbornwiththem.A.babyhasgenerallyinformedfacefeatures.A.babyaccordingtoBirdwhistelllearnswheretosettheeyebrowsbylookingatthosearound-familyandfriends.ThishelpsexplainwhythepeopleofsomeareasoftheUnitedStateslooksomuchalikenewEnglandersorSouthernershavecertaincommonfacefeaturesthatcannotbeexplainedbygenetics遗传学.Theexactshapeofthemouthisnotsetatbirthitislearnedafter.Infactthefinalmouthshapeisnotformeduntilwellafternewteethareset.Formanythiscanbewellintogrown-ups.A.husbandandwifetogetherforalongtimeoftencometolookalikE.Welearnourlooksfromthosearoundus.Thisisperhapswhyinasinglecountryareawherepeoplesmilemorethanthoseinotherareas.IntheUnitedStatesforexampletheSouthisthepartofthecountrywherethepeoplesmilemostfrequently.InNewEnglandtheysmilelessandinthewesternpartofNewYorkStatestillless.ManysouthernersfindcitiessuchasNewYorkcoldandunfriendlypartlybecausepeopleonMadisonAvenuesmilelessthanpeopleonPeachtreeStreetinAtlantA.GeorgiA.PeopleinAtlantaGeorgiA.Peopleinlargelypopulatedareasalsosmileandgreeteachotherinpubliclessthanpeopleinsmalltownsdo.1.RayBirdwhistellbelievesthatphysicalappearance_______.A.haslittletodowithcultureB.hasmuchtodowithcultureC.iseverchangingD.isdifferentfromplacetoplace2.Accordingtothepassagethefinalmouthshapeisformed_______.A.beforebirthB.assoonasone’steetharenewlysetC.sometimeafternewteetharesetD.around15yearsold3.RayBirdwhistellcantellwhatareaoftheUnitedStatesapersonisfromby_______.A.howmuchheorshelaughsB.howheorsheraiseshisorhereyebrowsC.whatheorshelikesbestD.thewayheorshetalks4.Thispassagemighthavebeentakenoutofabookdealingwith________.A.physicsB.chemistryC.biologyD.noneoftheabove
IndustrialpollutionisnotonlyaproblemforthecountriesofEuropeandNorthAmericabutalsoanextremelyseriousprobleminsomedevelopingcountries.Forthesecountrieseconomicgrowthisaveryimportantaim.Theywanttointroduceindustriesandsotheyputfewcontrolsontheindustrieswhichcausepollution.Cubataoanindustrialtownof85000peopleinBrazilisanexampleoftheconnectionbetweenindustrialdevelopmentandpollution.In1954Cubataohadnoindustry.Todayithasmorethantwentylargefactorieswhichproducemanypollutants污染物.Thepeopleofthetownaresufferingfromthepoisonousmatterintheirenvironmentandthebadeffectscanbeclearlyseen.Birthshortcomingsareextremelycommon.AmongchildrenandadultslungproblemsaresometimestwelvetimesmorecommoninCubataothaninotherplaces.ItistruethatBrazillikemanyothercountrieshaslawsagainstpollutionbuttheselawsarenotenforcedstrictlyenough.Itischeaperforcompaniestotakenonoticeofthelawsandpaythefines罚款thantobuytheexpensiveequipmentthatwillreducethepollution.Itisclearthereforethateconomicgrowthismoreimportanttothegovernmentthantothehealthoftheworkers.Howevertheresponsibility责任doesnotcompletelyliewiththeBraziliangovernment.TheexampleofCubataoshowsthatinternationalcompaniesarenotactinginaresponsiblewayeither.A.numberofthefactoriesinthetownareownedbylargecompaniesfromFranceItalyandtheU.S.TheyaredoingthingsinBrazilthattheywouldnotbeabletodoathomE.Iftheycausedthesameamountofpollutionathometheywouldbeseverely严厉地punishedorevenputoutofbusiness.Whydon’tdevelopingcountrieshavestrictpollutioncontrols?A.Thenewindustriestheywanttointroducedonotcausemuchpollution.B.Pollutionisnotaseriousproblemfordevelopingcountries.C.Theydon’trealizethebalanceofnaturewillbedestroyedbysomepollutants.D.Iftheyputstrictercontrolsonindustryfewercompanieswouldbuildnewplantsindevelopingcountries.Whatistheauthor’spurposeintakingCubataoasanexample?A.Toshowthatindustrycandevelopveryfastindevelopingcountries.B.ToshowthatthepollutionprobleminBrazilisextremelyserious.C.Toshowthatindustrialgrowthcancausepollutionproblemsfordevelopingcountries.D.ToshowthatpollutioniskillingmanypeopleanddestroyingthewholeeconomyofBrazil.HowisthehealthofthepopulationofCubatao?A.Therearemoreheartdiseasesamongpeoplewholivenearchemicalfactories.B.Morepeoplesufferfromlungdiseasesbecauseofpoisonousmatter.C.TheirhealthisaffectedbypollutantsthesamewayasthatofotherBrazilians.D.Babiestherearefoundnotasbrightasthosewholiveinotherplaces.WhydosomeforeigncompaniesliketosetuptheirplantsinBrazil?A.Theinvestment投资environmentinBrazilissuitableforthem.B.TheywillnotbeseverelypunishediftheycausepollutioninBrazil.C.TheycanmakemuchmoneybecausetheydonothavetopayBrazilianworkersmuch.D.Theycanactinanirresponsible不负责任的wayinBrazilbecausetherearenopollutionlawstherE.
DNADeoxyribonucleicacidisoneofthemostimportantdiscoveriesinsciencE.DNAistheplanforthehumanbeingasablueprintistheplanforbuilding.DNAmakesapersonlookthewayhedoes.A.person'sDNA.comesfromamixingofhisparents'DNA.That'swhyachildlookslikehisparents.ButbesidescontrollingthingssuchasheightandhaircolorDNAcanalsogivepeoplediseasesScientistsarenowstudyingDNAtocurediseases.Intheseventiesscientistsdevelopedaprocesscalledrecombinant重新组合orRDNA.AlthoughitsoundsdifficulttounderstandRDNAsimplymeanstakingDNAfromoneanimalorplantandputtingitintoanother.Bydoingsoscientistscancreatenewbeings.InsodoingscientistscanbetterunderstandDNAespeciallywhatpartsofDNAdo.AftertheyunderstandDNAscientistscanbegintocurediseases.OftenthenewbeingcreatedwillitselfbethecurE.BesidescuringdiseasesRDNAresearchcanalsodootherthings.ForexamplescientistsinJapanhavealreadycreatedsuper-trees.TreeshelphumansbecausetheytakeCO2whichpoisonshumansfromtheairandturnsitintooxygenwhichletshumansbreathE.Super-treesdothistoobutdoifmuchfaster.AsthingssuchascarsandfactorieshavealreadyputmuchCO2intheareasuper-treesarebadlyneedeD.UnfortunatelythereisseriousdangerinRDNAresearch.Scientistswanttocreateanimalstocureolddiseasesbutthesenewanimalsmayalsocreatenewdiseases.ItwillbeaseriousproblemiftheanimalsescapefromthesciencelaboratoryandintonaturE.Astheseanimalsarenotnaturaltheymayletloosemanynewpowerfuldiseases.AsaresultRDNAresearchwillcreatemanysolutions解决方案butitwillalsocreatemanyproblems.67.Fromthepassagewecanknowthataboylookslikehisparentsbecause________A.heissonofhisparentsB.hisparents'DNAdecideshisappearanceC.hehasreceivedDNAfromhisfatherorhismotherD.scientistshaveputsomeofhisparents'DNAintohim68.Whatdoestheunderlinedexpressionletlooseprobablymean?A.let...gofreeB.getridofC.absorbD.survive69.Whatisthebesttitleforthepassage?TheDNAResearchinJapanB.A.NewWayofDNAResearchinJapanC.TheCausesandEffectsofDNAResearchD.TheAdvantagesAndDisadvantagesofRDNA70.ThefollowingstatementsaretrueaboutRDNAresearchEXCEPT_____.A.theresearchhasbeenstoppedbecausethecreatedanimalscarryvirusB.super-treesmightbewidelyplantedaroundtheworldC.scientistshavenotcompletelyunderstoodDNAD.RDNAresearchwillbenefithumanbeingsalot
Forhundredsofyearshumanshavedreamedoffindinglifeondistantplanets.NowthehopeofdiscoveringrealevidenceoflifehasgreatlyincreaseD.NASA'sMarsdetector探测器Opportunitysucceededinfindingsignsthatwateronceexistedontheplanet.OpportunitylandedonMarsinJanuary.ScientistsnowbelievethattheplanetcouldoncehavesupportedlifE.ThisdiscoverywaschosenbyScienceoneoftheworld'sleadingmagazinesasthemostimportantscientificachievementof2004lastFriday.Thislittlewheeledone-armedboxwentaroundanotherplanetandhasdonesomethingnohumanhasevermanagedaccordingtoScience.IthasdiscoveredanotherplaceintheuniversewherelifecouldoncehaveexisteD.Althoughwestillcan'tsaythatlifecouldhaveexistedinthisenvironmentitisnowcertainthattherewaswateronMarssaidSteveSquyresoneofthescientistsworkingontheMarsmission.TheevidencecomesfrompicturesandchemicalreadingstakenbyOpportunity.ItincludesmarksonrockslikethosecausedbyfollowingwateronEarthandsaltychemicalslikethosefoundindried-outsea-beds.ScientistssaidthenewevidenceprovedbeyonddoubtthatwaterhasexistedonMars.ButitisstillunknownwhetherthewaterwaslikeanoceanorjusticE.WhileOpportunityhasnotfoundanysignsoflifethepresenceofwatermeanslifeispossiblE.IneverythingweknowaboutlifeonEarththereisnoexamplewithoutliquidwaterSquyressaiD.SowaterisimportantforthesearchforlifeonMars.Researchersagreethatafuturemission任务shouldbringbackphysicalsamples样品.ButsomescientistsworryabouttheriskthatthiscouldintroducedangerousforeigncreaturestoEarth.TheproblemhereishowtogetthesamplesbackSquyresreplieD.Ithinkitisourresponsibilitytolimitanyrisk.WhatprovedthatwaterexistedonMars?A.Thephysicalsampleswithsaltychemicals.B.Themarksonrocksandsaltychemicals.C.Scientificachievementsof2004.D.CreaturesfromMars.Whichofthefollowingistrueaccordingtothetext?A.ItisnowcertainthattherewaswateronMars.B.ThewateronMarswaslikeanocean.C.EvidenceoflifeonMarshasbeenfounD.D.SearchforlifeonMarsisagreatrisktohumans.HowdidscientistsdrawtheconclusionthattherewaswateronMars?A.Theworld'sleadingmagazinehasannouncedthefact.B.ScientistshavetakenmanypicturesandchemicalreadingsontheMars.C.AstronautshavegotsomerocksfromMars.D.ScientistshavemadeastudyofthepicturesandreadingssentbackbyMarsdetector.ItcanbeinferredthatifthecreaturesfromMarscametoearth_________.A.theywouldbekindtohumansB.theywouldbecrueltohumansC.theywouldbeagreatdangertoEarthD.itwouldbehardtosaywhetheritwouldbegoodnewsorbadnews
TheideaforascienceexperimentcancomefromanunusualplacE.AfterwatchingaYouTubevideoofadancingbirdnamedSnowballascientistinCaliforniadecidedtostudytheabilityofanimalstokeepthebeat.BirdlovershavelongclaimedthattheirpetshaverhythmandtherearemanyvideosofdancingbirdsonlinE.UntilnowscientistshavesuspectedthathumansaretheonlyanimalsthatcanaccuratelykeeprhythmwithmusiC.ThankstoSnowballthatscientificopinionischanging.SnowballisacockatooakindofparrotandhisfavoritesongisEverybodybytheBackstreetBoys.WhenhehearsthesonghemoveshisfeetandrockshisbodywiththetempoorpaceofthemusicasthoughheistheonlybirdmemberoftheboybanD.AniruddhPatelisaneuroscientistorascientistwhostudieshowthebrainandthenervoussystemcontributetolearningseeingandothermentalabilities.HeworksattheNeurosciencesInstituteinSanDiego.AfterseeingSnowball'sdanceonlinePatelvisitedthecockatooatthebirdrescuefacilityhe'scalledhomefortwoyears.ThescientistplayedEverybodyforSnowballandalsoplayedversionsofthesongthatwerespeduporsloweddown.SometimesSnowballdancedtoofastortooslowly.OftenwhentherewasachangeintempoSnowballadjustedhisdancingtomatchtherhythm.Inotherexperimentsscientistshaveobservedthesameabilitiesinpreschoolchildren.Patelisn'ttheonlyscientistwhohasstudiedSnowball'smoves.AdenaSchachnerwhostudiespsychologyatHarvardUniversityalsowantedtoknowmoreaboutthedancingbirD.Schachner'steamplayeddifferentmusicalpiecesforSnowballandaparrotnamedAlexaswellaseighthumanvolunteers.Thescientistsobservedthatthebirdsandthehumanskepttimetothemusicwithaboutthesameaccuracy.SchachnerandherteamwatchedthousandsofYouTubevideosofdifferentanimalsmovingtomusiC.Notalltheanimalscoulddancehowever.Fromwatchingthevideosthescientistsobservedthatonlyanimalsthatimitatesoundsincluding14parrotspeciesandAsianelephantsaccuratelymovedintimetomusiC.63.Theunderlinedwordsthatscientificopinioninthethirdparagraphreferstothetheorythat______.A.birdslikeSnowballhavetheabilitytokeepthebeatB.humansaretheonlyanimalsthatcanaccuratelykeeprhythmwithmusicC.thebrainandthenervoussystemcontributetosomementalabilitiesD.birdpetscanhavetheirspecialrhythmunderhuman’sinstruction64.Fromthefourthparagraphwemayknowthat______.A.PatelistheonlyscientistwhohasstudiedSnowball’smoves.B.Snowballisabletoadjusthisdancingtomatchtherhythm.C.SnowballcannotdancetotheversionsofthesongEverybody.D.itisthebrainandthenervoussystemthatcontrolthementalabilities.65.Theideaofstudyinganimals’abilitytokeepthebeatcomesfrom______.A.birdlovers’discoveryB.humansmusicalsenseC.thesameabilitiesinchildrenD.videosofdancingbirds66.AccordingtothescientistsSnowball’sabilitytodancetomusicisprobablyrelatedtothefactthat______.A.itistheonlybirdmemberoftheBackstreetBoysbandB.ithastheabilitytoimitatesoundsC.itisakindofdancingparrotD.ithasthesameabilitiesaspreschoolchildren
Whatwillmanbelikeinthefuture—in5000oreven50000yearsfromnow?WecanonlymakeguessesofcoursebutwecanbesurethathewillbedifferentfromwhatheistodayformanisslowlychangingallthetimE.LetustakeanobviousexamplE.Manevenfivehundredyearsagowasshorterthanheistoday.Nowonaveragemenareaboutthreeinchestaller.Fivehundredyearsisarelativelyshortperiodoftimesowemayassumethatmanwillcontinuetogrowtaller.Againinthemodernworldweuseourbrainsagreatdeal.Evensowestillmakeuseofonlyabout20%ofthebrain’scapacity容量.Astimegoesonhoweverweshallhavetouseourbrainsmoreandmoreandeventuallyweshallneedlargerones!Thisislikelytobringaboutaphysicalchangetoo:theheadinparticulartheforeheadwillgrowlarger.NowadaysoureyesareinconstantusE.Infactweusethemsomuchthatveryoftentheybecomeweakerandwehavetowearglasses.Butoveraverylongperiodoftimeitislikelythatman’seyeswillgrowstronger.Ontheotherhandwetendtomakelessuseofourarmsandlegs.Theseasaresultarelikelytogrowweaker.AtthesametimehoweverourfingerswillgrowmoresensitivebecausetheyareusedagreatdealinmodernlifE.Butwhatabouthair?Thiswillprobablydisappearfromthebodyaltogetherincourseoftimebecauseitdoesnotserveausefulpurposeanylonger.InthefuturethenbothsexesarelikelytobebalD.Perhapsallthisgivestheimpressionthatfuturemanwillnotbeaveryattractivecreaturetolookat!ThismaywellbetruE.Allthesameinspiteofallthesechangesfuturemanwillstillhavealotincommonwithus.Hewillstillbeahumanbeingwiththoughtsandemotionssimilartoourown.56.Thesizeofman’sforeheadwillprobablygrowbiggerbecause_______.A.hewillusehisbrainmoreandmoreastimegoesonB.hemakesuseonly20%ofthebrain’scapacityC.hisbrainhasgrownlargeroverthepastcenturiesD.theother80%ofhisbrainwillgrowinduetime57.Whatservesastheevidencethatmanischanging?A.ManhasgotstrongereyesnowthanheeverhaD.B.Manhasbeengrowingtalleroverthepast500years.C.Man’shairisgettingthinnerandthinner.D.Man’sarmsandlegshavebecomelighterandweaker.58.Whatwillbetrueaboutahumanbeinginthefuture?A.Hewillbehairlessbecausehairisnolongeruseful.B.Hewillhavesmallereyesandwillwearbetterglasses.C.Hisfingerswillgrowweakerbecausehewon’thavetomakeuseofthem.D.Hewillthinkandfeelinadifferentway.59.Itisimpliedthat__________________.A.humanbeingswillbecomemoreattractiveinthefutureB.bodyorganswillbecomepooreriftheyarenotusedoftenC.humanbeingshopeforachangeinthefuturelifeD.futurelifeisalwayspredictable60.Thepassagemainlytellsusthat_______________.A.man’slifewillbedifferentinthefutureB.manisgrowingtalleranduglierastimepassesC.futuremanwilllookquitedifferentfromusD.humanbeings’organswillfunctionweaker
CThecomputerisfastandnevermakesamistakewhilepeoplearetooslowandfullofmistakessometimes.That’swhatpeopleoftensaywhentheytalkaboutcomputers.Foroveraquarterofacenturyscientistshavebeenmakingbetterandbettercomputers.Nowacomputercandoalotofeverydayjobswonderfully.Itiswidelyusedinfactorieshospitalspostofficeandairports.A.computercanreportdecideandcontrolinalmosteveryfielD.Manycomputerscientistsarenowthinkingofmakingthecomputerthinklikeaman.Withthehelpofapersonacomputercandrawpictureswritemusictalkwithpeopleplaychessrecognizevoicetranslatelanguagesandsoon.Perhapscomputerwillonedayreallythinkandfeel.Doyouthinkthepeoplewillbeafraidwhentheyfindthatthecomputertooclevertolistentoandservethepeople?63.A.computeriscleverbecausepeopleare_____A.cleverB.notcleverC.slowD.makingmistakes64.Whichofthefollowingcancomputersnotdonow?A.DrawpicturesB.TalkC.InventnewthingsD.Servethepeople65.Whatwillhappeninthefuture?A.Mostworkwillbedonebythecomputer.B.Peoplewillnolongerusecomputer.C.ComputerswillbeusedonlytalkwithpeoplE.D.Allcomputerswillbeputintoprison.66.Thepassageiswrittento__________.A.warnpeopleofthedangerofthecomputerB.tellpeopleaboutthecomputerC.tellpeopleaboutcomputerscientistsD.showhowtousethecomputer67.Thebesttitleforthispassageis_________.A.ComputersB.ComputerScientistsC.TheFutureWorldD.TalkWithComputers
Thebeeliketheantisasocialinsect昆虫.Beesliveinlargegroupsinbox-likehousescalledhivesorbeehives.Everybeedoesacertainjobthathelpstheothermembersofthegroup.Inabeehivetherelivethreekindsofbees:thequeenbeethemalebeesandtheworkerbees.Theworkerbeesareborntobehard-workingflyingfromflowertoflowercollectingnectar花蜜whichismadeupmostlyofsugarmixedwithwater.Beesdrawthisnectarintotheirhoneybagswheresomesortofliquidintheirbodiesturnsthenectarintohoney.Thenewlymadehoneyflowsslowlyfromthebees’undersideandthenisstoredinsmallcellsinthehivE.Whentheweatherturnscoldandtherearenoflowersforthemtocollectnectarthestoredhoneywillseethemthroughthewintermonths.Peoplewhoraisebeesanddependonbeesforalivingarethoughtofasbeekeepers.Abee-keeperusuallykeepshundredsofhivesandremoveshoneyfromhivesandkeepsitinglassbottlesorjars.Honeyusuallyappearsasacleargolden-coloredliquidbutthisliesinthesortofflowersfromwhichbeeshavetakenthenectar.66.Thebesttitleofthispassageis_______.A.TheSocialHabitsofBeesB.ThreeKindsofBeesC.TheProductionofHoneyD.BeeKeepers’Work67.Beesareregardedassocialinsectsbecausethey_______.A.formthemselvesintoagoodorganizationB.havelearnedsomethingfromhumansocietyC.needbeekeeperstoarrangetheirjobsD.areborntoworkhard68.Thecolorofhoneyinitsfinalstagedependsonthe_______.A.typeofflowerswhichthenectaristakenfromB.amountofsugarthebeekeepergivesthebeesC.seasoninwhichthenectariscollectedD.quantityofwaterthebeesareabletodrink69.Workerbeesarealwaysbusycollectingnectarinorderto_______.A.helpbeekeeperstoearnmoneyfromhoneyB.turnitintohoneyC.havesomethingtoeatinwintermonthsD.pleasethequeenbeeatthehive70.Duringthecourseinwhichnectarchangeintohoney_______.A.waterandsunlightarenecessaryconditionsB.somespecialliquidinsidebeesmustbeinthepresenceC.manycomplex复杂的chemicalchangeswilltakeplaceD.workerbeeshavetobringupwhattheycollectedintotheirhive
Todayultrasonic超声的wavesarebeingputtoworkinlaboratoriesandfactories.IfanultrasoundgeneratorisplacedinaliquidthewavesmovetheliquidbackandforthhundredsofthousandsoftimeseachseconD.Thiscausesmaterialstomixquicklyortodissolve使分解使溶解inliquids.Paintmanufacturers制造商useultrasoundtodoabetterjobofblendingcolors.Thecompaniesthatmakefilmforyourcamerafindthatmixingchemicalsbytheuseofsoundwaveswillproduceamoresensitivefilm.Thenewlightweight轻量的typeofwashingmachineusesultrasonicwavestogetclothesclean.Itsspecialultrasoundgeneratorisputintoapailofsoapywatercontainingthesoiledclothes.Thesoundwavesdrivethesoapywaterbackandforththroughtheclothsofastthateverythingissoonclean.Thereisalsoanewkindofdishwasherthatworksinmuchthesameway.Ultrasonicwavescanshakealiquidsofastthattinyholesformallthroughit.Theliquidisactuallytornapartbythisaction.Almostassoonastheseholesaremadetheyfalltogetheragain.Theresultisapowerfulpoundingaction.Inthedairyindustrythisisusedforthedoublepurposeofmakinghomogenized使均匀使匀质milkandsterilizing使无菌itatthesametimE.IfyoulookatsomerawmilkwithamicroscopeyoufindthatitismadeupoflittledropsofbutterfatfloatingaroundinawateryliquiD.Inordertomakemilkeasiertodigestthesefatdroplets微粒maybebrokenupbyforcingthemilkthroughverysmallopenings.Theresultiscalledhomogenizedmilk.Whentheultrasonicmethodisusedthesoundwavesnotonlybreakupthedropletsbutalsokillthegermsinthemilkbypoundingthemtopieces.fromwww.nmet84.com8.Whydoesapaintmanufactureruseultrasoundtodoabetterjobofblendingcolors?A.Becauseitischeaptouseultrasoundtoblendcolors.B.Becausethewavesmovetheliquidsoquicklythatitcanmakematerialsmixquicklyordissolveinliquids.C.Becausetheycanmixchemicalsbytheuseofsoundwaves.D.Becausethewavescancleanthepaint.9.Whatpropertiesdoesultrasoundwavehave?A.Homogenizesandsterilizesthemilk.B.Mixmaterialsandbreakdroplets.C.Killgermsandsterilizemilk.D.Moveliquidsquickly.10.Whatexistsintherawmilk?A.Littledropsofbutterfat.B.Smallholes.C.Fatdropletsandgerms.D.Chemicals.11.Whereisultrasoundwavenotused?A.InthepaintmanufacturE.B.Intheshopmixingbreadflour.C.Inthefilm-makingcompany.D.Inthedairyindustry.
CLONDON:Whatcouldpossiblybewrongwithplantingtrees?Thebenefitsareobvious;theyfirmthesoilsoakup摄取extrawaterandtakecarbondioxide二氧化碳ouroftheatmospherE.Howeveritnowturnsoutthatplantingtreescouldaddtoglobalwarming.Treerootsdoagreatjobofkeepingsoilfirmlyonthegroundandoutofthewind’spower.TheproblemisthatsomeofthosedustcloudsplayanimportantpartinsoakingupcarbondioxidE.HugeduststormsblowoutovertheoceansfromdrypartsofNorthAfricaandcentralAsiA.TonsofdustareliftedandleftasathinfilmovertheoceansurfacE.ThedustfuelsoceaniclifE.DustfromChinaiscarriedeastandleftinthePacificOcean.Ifatree-plantingprogrammethereissuccessfulandthedustsupplyreducedthenetresultmaybethatlesscarbondioxidegetslockedawayintheocean.AndyRidgwellanenvironmentalscientistfromtheUniversityofEastAngliahasspentthepastfewyearsstudyingdustandsayshisworkshowsclearlythatthecomplexityofthesystemandtheimportanceofnottinkering粗劣地修补withitwithoutunderstandingtheresults.Forthisreasontheneedistofocus集中oncuttingcarbondioxidegivingoffratherthanmonkeying瞎弄aboutwiththelandsurfacE.AnAmericanscientistRobertJacksonhasshownthatwhennativegrasslandareasareinvaded侵入bytreescarbonislostfromthesoil.WearestudyingwhythesoilcarbondisappearsbutonetheoryisthattreesdoalotmoreoftheirgrowingabovegroundcomparedtograssessolesscarbongoesdirectlyintothesoilfromtreessaysJackson.Inwetareasoftheworldthegainfromtreesabsorbingcarbondioxideabovegroundseemstobeoutweighed超过bythelossofcarbonfromthesoilbelowgrounD.Countriesthatplantocombatglobalwarmingbyplantingtreesmayhavetothinkagain.SolutionstoenvironmentalproblemsareoftenmorecomplexthantheyfirstappearandunderstandingtheEarth’sclimateisaverygreatchallengE.63.Peopleusuallyholdtheopinionthat.A.hugeduststormscandestroycarbondioxideB.hugeduststormscandestroytheoceansontheearthC.hugeduststormscan’tdoanythingbeneficialformanD.plantingtreesistheonlywaytocontrolhugeduststorms64.AndyRidgwelltheenvironmentalscientistbelievesthat.A.dustplaysamoreimportantpartthantreesB.treesshould’thavebeenplantedindryplacesC.carbondioxideisharmfultoeverythingontheearthD.environmentalproblemsaremorecomplexthanexpected65.RobertJackson’sexperimentprovesthat.A.grasslandareasshouldbecoveredbyforestsB.treesholdmorecarbonthangrassesC.carboncanturngrassintodustD.lesscarboncanmaketreesgrowfaster66.Theunderlinedwordcombatinthelastparagraphmeans.A.learnaboutB.fightagainstC.livewithD.giveup
TheVienna-basedresearchersshowedthatdogswillstopdoingasimpletaskwhennotrewardedifanotherdogwhichcontinuestoberewardedispresent.TheexperimentconsistedoftakingpairsofdogsandgettingthemtopresentapawforarewarD.OngivingthishandshakethedogsreceivedapieceoffooD.OneofthedogswasthenaskedtoshakehandsbutreceivednofooD.Theotherdogcontinuedtogetthefoodwhenitwasaskedtoperformthetask.ThedogwithouttherewardquicklystoppeddoingthetaskandshowedsignsofangerorstresswhenitspartnerwasrewardeD.Tomakesurethattheexperimentwasreallyshowingtheinteractionbetweenthedogsratherthanjustthefrustrationofnotbeingrewardedasimilarexperimentwasconductedwherethedogsperformedthetaskwithoutthepartner.Heretheycontinuedtopresentthepawformuchlonger.DrFrederikeRangefromtheUniversityofViennasaysthisshowsthatitwasthepresenceoftherewardedpartnerthatwasthegreaterinfluenceontheirbehaviour.Theonlydifferenceisonegetsfoodandtheotherdoesn’ttheyarerespondingtobeingunequallyrewardeD.shesaiD.Theresearcherssaythiskindofbehaviourwhereoneanimalgetsfrustratedwithwhatishappeningwithanotherhasonlybeenobservedinprimates灵长类beforE.StudieswithvarioustypesofmonkeysandchimpanzeesshowtheyreactnotonlytoseeingtheirpartnersreceivingrewardswhentheyarenotbutalsotothetypeofrewarD.ThedogstudyalsolookedatwhetherthetypeofrewardmadeadifferencE.Dogsweregiveneitherbreadorsausagebutseemedtoreactequallytoeither.DrRangesaysthismaybebecausetheyhavebeentraineD.57.Thedogsrefusedtogivethepawwhenthey_______.A.foundanotherdogwasgivennothingB.felttheywerenottreatedequallyC.wereawaretheyreceivedlessfoodD.weregiventoomuchreward58.Whatwouldthedogsdoiftheypresentedtheirpawalone?A.Theywouldgoonwiththeperformancemuchlonger.B.Theywouldbetooshytopresenttheirpaw.C.Theywouldmisstheirpartners.D.Theywouldcomparewhattheygotwiththatofothers.59.Accordingtothepassagecomparedwithdogsmonkeysandchimpanzees______.A.paynoattentiontothetypeofrewardB.onlyliketoplayinterestinggamesC.payattentiontothetypeofrewardaswellaswhethertheyarerewardedD.caremoreabouthowtheyarerewarded60.Whichofthefollowingcanbestsummerisethepassage?A.Animals’variouswaystoshowangerB.DogsaremoreenviousthanmanC.MostanimalswanttobeberewardedfortheirworkD.Animalsalsohaveasenseoffairplay
SupposewebuiltarobottoexploretheplanetMars.Weprovidetherobotwithseeingdetectors探测器tokeepitawayfromdanger.Itispoweredentirelybythesun.Shouldweprogramtherobottobeequallyactiveatalltimes?Notherobotwouldbeusingupenergyatatimewhenitwasnotreceivingany.Sowewouldprobablyprogramittostopitsactivityatnightandtowakeupatdawnthenextmorning.Accordingtoevolutionary进化的theoryofsleepevolutionequippeduswitharegularpatternofsleepingandwakingforthesamereason.Thetheorydoesnotdenythatsleepprovidessomeimportantrestorativefunctions.Itmerelysaysthatevolutionhasprogrammedustoperformthosefunctionsatatimewhenactivitywouldbeinefficientandpossiblydangerous.Howeversleepprotectsusonlyfromthesortoftroublewemightwalkinto;itdoesnotprotectusfromtroublethatcomeslookingforus.Sowesleepwellwhenweareinafamiliarsafeplacebutwesleeplightlyifatallwhenwefearthatbearswillnoseintothetent.Theevolutionarytheoryexplainthedifferencesinsleepamongcreatures.Whydocatsforinstancesleepsomuchwhilehorsessleepsolittle?Surelycatsdonotneedfivetimesasmuchrepairandrestorationashorsesdo.Butcatscanaffordtohavelongperiodsofinactivitybecausetheyspendlittletimeeatingandareunlikelytobeattackedwhiletheysleep.HorsesmustspendalmostalltheirwakinghourseatingbecausewhattheyeatisverylowinenergyvaluE.Moreovertheycannotaffordtosleeptoolongortoodeeplybecausetheirsurvivaldependsontheirabilitytorunawayfromattackers.1.Theauthorusestheexampleoftherobotinspaceexplorationtotellus_______.A.thedifferencesbetweenrobotsandmenB.thereasonwhymenneedtosleepC.abouttheneedforrobotstosavepowerD.aboutthedangerofmenworkingatnight2.Evolutionhasprogrammedmantosleepatnightchieflytohelphim______.A.keepuparegularpatternoflifeB.preventtroublethatcomeslookingforhimC.avoiddangerandinefficientlaborD.restorehisbodilyfunctions3.Whichofthefollowingisthemainideaofthepassage?A.Evolutionhasequippedallcreatureswitharegularpatternofsleepingandwaking.B.Thestudyofsleepisanimportantartoftheevolutionarytheory.C.Sleepingpatternsmustbetakenintoconsiderationinthedesigningofrobots.D.Thesleepingpatternofalivingcreatureisdeterminedbythefooditeats.
CanpeoplechangetheirskincolourwithoutsufferinglikepopkingMichaelJackson?Perhapsyes.Scientistshavefoundthegenethatdeterminesskincolour.Thegenecomesintwoversionsoneofwhichisfoundin99percentofEuropeans.Theotherisfoundin93to100percentofAfricansresearchersatPennsylvaniaStateUniversityreportinthelatestissueofSciencE.Scientistshavechangedthecolourofadark-stripedzebrafishtouniformgoldbyinsertingaversionofthepigment色素geneintoayoungfish.Aswithhumanszebrafishskincolourisdeterminedbypigmentcellswhichcontainmelanosomes黑色素.Thenumbersizeanddarknessofmelanosomesperpigmentcelldeterminesskincolour.Itappearsthatlikethegoldenzebrafishlight-skinnedEuropeansalsohaveamutation变异inthegeneformelanosomeproduction.Thisresultsinlesspigmentedskin.HoweverKeithChengleaderoftheresearchteampointsoutthatthemutationisdifferentinhumanandzebrafishgenes.HumansacquireddarkskininAfricaabout1.5millionyearsagotoprotectbodiesfromultra-violetraysofthesun太阳光紫外线whichcancauseskincancer.ButwhenmodernhumansleaveAfricatoliveinnorthernlatitudestheyneedmoresunlightontheirskintoproducevitaminD.SotherelatedgenechangesaccordingtoCheng.AsianshavethesameversionofthegeneasAfricanssotheyprobablyacquiredtheirlightskinthroughtheactionofsomeothergenethataffectsskincoloursaidCheng.Thenewdiscoverycouldleadtomedicaltreatmentsforskincancer.ItalsocouldleadtoresearchintowaystochangeskincolourwithoutdamagingitlikechemicaltreatmentdidonMichaelJackson.51.Thepassagemainlytellsusthat________.A.peoplecannotchangetheirskincolourwithoutanypainB.thenewdiscoverycouldleadtosearchintowaystochangeskincoloursafelyC.popkingMichaelJacksonoftenchangedhisskincolourashelikedD.scientistshavefoundoutthatpeople’sskincolourisdeterminedbythegene52.Itcanbeinferredfromthepassagethat________.A.nowadayspeoplewhowanttochangetheirskincolourhavetosufferalotfromthedamagecausedbythechemicaltreatmentB.EuropeansandAfricanshavethesamegeneC.thenewdiscoverycouldhelptofindmedicaltreatmentsforskincancerD.therearetwokindsofgenes53.Scientistshavedoneanexperimentonadark-stripedzebrafishinorderto________.A.findthedifferentgenesofhumans’B.provethehumans’skincolourisdeterminedbythepigmentgeneC.findoutthereasonwhytheAfricans’skincolourisdarkD.findoutthewaysofchangingpeopl’sskincolour54.ThereasonwhyEuropeansarelight-skinnedisprobablythat________.A.theyarebornlight-skinnedpeopleB.light-skinnedEuropeanshavemutationinthegenformelanosomeproductionC.theyhavefeweractivitiesoutsideD.theypaymuchattentiontoprotectingtheirskin55.Thewriter’sattitudetowardsthediscoveryis________.A.neutralB.negativeC.positiveD.indifferent
A.rainforestisanareacoveredbytalltreeswiththetotalhighrainfallspreadingquiteequallythroughtheyearandthetemperaturerarelydippingbelowl6℃.RainforestshaveagreateffectontheworldenvironmentbecausetheycantakeinheatfromthesunandadjusttheclimatE.WithouttheforestcovertheseareaswouldreflectmoreheatintotheatmospherewarmingtherestoftheworlD.LosingtherainforestsmayalsoinfluencewindandrainfallpatternspotentiallycausingcertainnaturaldisastersallovertheworlD.Inthepasthundredyearshumanshavebegundestroyingrainforestsinsearchofthreemajorresources资源landforcropswoodforpaperandotherproductslandforraisingfarmanimals.ThisactionaffectstheenvironmentasawholE.Forexamplealotofcarbondioxide二氧化碳intheaircomesfromburningtherainforests.Peopleobviouslyhaveaneedfortheresourceswegainfromcuttingtreesbutwewillsuffermuchmorethanwewillbenefit.Therearetwomainreasonsforthis.Firstlywhenpeoplecutdowntreesgenerallytheycanonlyusethelandforayearortwo.Secondlycuttinglargesectionsofrainforestsmayprovideagoodsupplyofwoodrightnowbutinthelongrunitactuallyreducestheworld’swoodsupply.Rainforestsareoftencalledtheworld’sdrugstorE.Morethan25％ofthemedicinesweusetodaycomefromplantsinrainforests.Howeverfewerthanl％ofrainforestplantshavebeenexaminedfortheirmedicalvaluE.Itisextremelylikelythatourbestchancetocurediseasesliessomewhereintheworld’sshrinkingrainforests.RainforestscanhelptoadjusttheclimatebecausetheyA.reflectmoreheatintotheatmosphereB.bringabouthighrainfallthroughouttheworldC.rarelycausethetemperaturetodroplowerthanl6℃D.reducetheeffectofheatfromthesunontheearthWhatdoesthewordthisunderlinedinthethirdparagraphreferto?A.Wewilllosemuchmorethanwecangain.B.Humanshavebegundestroyingrainforests.C.Peoplehaveastrongdesireforresources.D.Muchcarbondioxidecomesfromburningrainforests.ItcanbeinferredfromthetextthatA.wecangetenoughresourceswithoutrainforestsB.thereisgreatmedicinepotentialinrainforestsC.wewillgrowfewerkindsofcropsinthegainedlandD.thelevelofannualrainfallaffectswindpatternsWhatmightbethebesttitleforthetext?A.HowtoSaveRainforestsB.HowtoProtectNatureC.RainforestsandtheEnvironmentD.RainforestsandMedicalDevelopment
DWithonlyabout1000pandasleftintheworldChinaisdesperatelytryingtoclone克隆theanimalandsavetheendangeredspecies物种.That’samovesimilartowhataTexasA.&MUniversityresearchershavebeenundertakingforthepastfiveyearsinaprojectcalledNoah’sArk.Noah’sArkisaimedatcollectingeggsembryos胚胎semenandDNAofendangeredanimalsandstoringtheminliquidnitrogen.IfcertainspeciesshouldbecomeextinctDr.DuaneKraemeraprofessorinTexasA.&M’sCollegeofVeterinaryMedicinesaystherewouldbeenoughofthebasicbuildingblockstoreintroducethespeciesinthefuturE.Itisestimatedthatasmanyas2000speciesofmammalsbirdsreptileswillbecomeextinctinover100years.ThepandanativeonlytoChinaisindangerofbecomingextinctinthenext25years.ThisweekChinesescientistssaidtheygrewanembryobyintroducingcellsfromadeadfemalepandaintotheeggcellsofaJapanesewhiterabbit.Theyarenowtryingtoimplanttheembryointoahostanimal.TheentireprocedurecouldtakefromthreetofiveyearstocompletE.Thenucleartransfer核子移植ofonespeciestoanotherisnoteasyandthelackofavailablecapableofbeingusedpandaeggscouldbeamajorproblemKraemerbelieves.Theywillprobablyhavetodoseveralhundredtransferstoresultinonepregnancyhavingababy.Ittakesalongtimeandit’sdifficultbutthiscouldbegroundbreakingscienceifitworks.TheyarecertainlynotputtinganylivepandasatrisksoitisworththeeffortaddsKraemerwhoisoneoftheleadersoftheProjectatTexasA&Mthefirst-everattemptatcloningadog.Theyaretryingtodosomethingthat’sneverbeendoneandthisisverysimilartoourworkinNoah’sArk.We’rebothtryingtosaveanimalsthatfaceextinction.Icertainlyappreciatetheireffortandthere’salotwecanlearnfromwhattheyareattemptingtodo.It’saresearchthatisverymuchneedeD.69.AccordingtoProfessorKraemerthemajorproblemincloningpandaswouldbethelackof_______.A.availablepandaeggsB.hostanimalsC.qualifiedresearchersD.enoughmoney70.Thebesttitleforthepassagemaybe_______.A.China’sSuccessinPandasCloningB.TheFirstClonedPandaintheWorldC.ExploringthePossibilitytoClonePandasD.China—theNativePlaceofPandasForever71.Fromthepassageweknowthat_______.A.KraemerandhisteamhavesucceededincloningadogB.scientiststrytoimplantapanda’seggintoarabbitC.KraemerwillworkwithChinesescientistsincloneresearchesD.abouttwothousandofspecieswillprobablydieoutinacentury
EOnereactiontoalltheconcernabouttropicaldeforestation砍伐森林isablankstarethatasksthequestionSinceIdon'tlivetherewhatdoesithavetodowithme?Theansweristhatyourwayoflifewhereveryouliveintheworldistiedtothetropicsinmanyways.Ifyouliveinahousewashyourhaireatfruitsandvegetablesdrinksodaordriveacaryoucanbecertainthatyouareaffectedbythelossoftropicalforests.Biologicallywearelosingtherichestregionsonearthwheneachminuteapieceoftropicalforestthesizeoftencityblocksdisappears.Asmanyasfivemillionspeciesofplantsanimalsandinsects40to50percentofalllivingthingslivethereandarebeinglostfasterthantheycanbefoundanddescribeD.TheirlossisimmeasurablE.TakerubberforexamplE.Formanyusesonlynaturalrubberfromtreeswilldo.Syntheticsarenotgoodenough.Todayoverhalftheworld'scommercialrubberisproducedinMalaysiaandIndonesiawhiletheAmazon'srubberindustryproducesmuchoftheworld'sfourmilliontons.Andrubberisanimportantmaterialinmakingglovesballoonsfootwearandmanysportinggoods.ThousandsofothertropicalplantsarevaluablefortheirindustrialusE.Manyscientistsstronglybelievethatdeforestationcontributestothegreenhouseeffect--orheatingoftheearthfromincreasedcarbondioxideintheatmospherE.Aswedestroyforestswelosetheirabilitytochangecarbondioxideintooxygen.Carbondioxidelevelscoulddoublewithinthenexthalf-centurywarmingtheearthbyasmuchas4.5degrees.Theresult?A.partialmelt-downofpolaricecapsraisingsealevelsasmuchas24feet;even15feetcouldthreatenanyonelivingwithin35milesofthecoast.Unbelievable?MaybE.Butscientistswarnthatbythetimewerealizethesevereeffectsoftropicaldeforestationitwillbe20yearstoolatE.Cantropicaldeforestationaffectoureverydaylives?Nowyoushouldhavegottheanswer.58.Theunderlinedwordsyntheticsprobablymeansakindof_________.A.naturalrubberB.tropicalmaterialC.man-madematerialD.tropicaltree59.Inthelastparagraphtheauthortriesto__________.A.tellpeoplehowtoavoidthetropicaldeforestationB.showushowimportantitistoprotectthetropicalforestsC.persuadepeopletobuysomethingsyntheticD.letpeoplerealizetheeffectoftropicaldeforestation60.Theauthor'sattitudetowardsthetropicaldeforestationis____________.A.puzzlingB.coldC.supportingD.opposed
InJuly1994Jupiterthelargestplanetinoursolarsystemwasstruckby21piecesofacomet彗星.Whenthefragment碎片landedinthesouthernpartofthegiantplanettheexplosionswerewatchedbyscientistshereonearth.Butwhatifourownplanetwashitbyacomet?Theyearis2094.IthasbeenannouncedthatacometisheadingtowardstheEarth.MostofitwillmissourplanetbuttwofragmentswillprobablyhitthesouthernpartoftheEarth.ThenewshascausedpaniC.On17JulyafragmentfourkilometerswideenterstheEarth’satmospherewithahugeexplosion.AbouthalfofthefragmentisdestroyeD.ButthemajorpartsurvivesandhitstheSouthAtlanticat200timesthespeedofsounD.Theseaboilsandanenormouswaveiscreatedandspreads.ThewallofwaterrushestowardssouthernAfricaat800kilometersanhour.CitiesontheAfricancoastaretotallydestroyedandmillionsofpeoplearedrowneD.ThewavemovesintotheIndianOceanandheadstowardsAsiA.MillionsofpeoplearealreadydeadinthesouthernpartoftheEarthbutthenorthwon’tescapeforlong.Tonsofbrokenpiecesarethrownintotheatmospherebytheexplosions.Asthesunishiddenbycloudsofdusttemperaturesaroundtheworldfalltoalmostzero.CropsareruineD.WarsbreakoutascountriesfightforfooD.A.yearlatercivilizationhascollapseD.Nomorethan10millionpeoplehavesurviveD.Coulditreallyhappen?InfactithasalreadyhappenedmorethanonceinthehistoryoftheEarth.Thedinosaurs恐龙wereontheEarthforover160millionyears.Then65millionyearsagotheysuddenlydisappeareD.ManyscientistsbelievethattheEarthwashitbyaspacefragment.Thedinosaurscouldn’tsurviveinthecoldclimatethatfollowedandtheybecameextinct.Willwemeetthesameend?WhichofthefollowingisNOTTRUEaccordingtotheauthor’sdescriptionofthedisasterin2094?Thewholemankindbecomesextinct.AllthecoastalcitiesinAfricanaredestroyeD.ThewholeworldbecomesextremelycolD.Thevisitofthecometresultsinwars.Whydoestheauthormentiondinosaursattheendofthepassage?A.BecausetheycouldonlyliveinthewarmclimatE.B.BecausetheyoncedominatedtheEarth.C.BecausedinosaursandhumansneverliveinthesameagE.D.BecausetheirextinctionindicatesfuturedisastersInwritingthepassagetheauthorintendsto__________.A.giveanaccuratedescriptionofthepossibledisasterinthefutureB.warnofapossibledisasterinthefutureC.tellthehistoricaldevelopmentoftheEarthD.provethathumanswillsoonerorlaterbedestroyedItcanbeconcludedthatthepassageismostprobablypartofan__________.A.horrorstoryB.newsreportC.articleofpopularscienceD.researchpaper
AnearlyinventionbyAlbertEinsteinhasbeenrebuiltbyscientistsatOxfordUniversity.Theyaretryingtodevelopanenvironmentallyfriendlyrefrigeratorthatrunswithoutelectricity.Weallknowthatmodernfridgescausedamagetotheenvironment.Theyworkbyusingakindofman-madegreenhousegascalledFreon氟里昂whichisfarmoredamagingthancarbondioxidE.NowMalcolmMcCullochanelectricalengineeratOxfordisleadingathree-yearprojecttodevelopappliancesthatcanbeusedinplaceswithoutelectricity.Histeamhascompletedaprototype样机ofafridgepatentedin1930byEinstein.ItusedonlypressurizedgasestokeepthingscolD.Thedesignwaspartlyusedinthefirstrefrigeratorsbutthetechnologywasdroppedwhenmoreefficientcompressors压缩机becamepopularinthe1950s.ThatmeantaswitchtousingFreon.Einstein’sideausesbutane丁烷andwaterandtakesadvantageofthefactthatliquidsboilatlowertemperatureswhentheairpressurearoundthemislower.IfyougotothetopofMountQomolangmawaterboilsatamuchlowertemperaturethanitdoeswhenyou’reatsealevelandthat’sbecausethepressureismuchloweruptheresaidMcCulloch.Atonesideistheevaporator蒸发器abottlethatcontainsliquidbutanE.IfyouintroduceanewvaporabovethebutanetheliquidboilingtemperaturedecreasesandasitboilsoffittakesenergyfromthesurroundingstodososaysMcCulloch.That’swhatmakesitcolD.ThegasfridgesbasedonEinstein’sdesignwerereplacedbyFreon-compressorfridgespartlybecauseEinstein’sdesignwasnotveryefficient.ButMcCullochthinksthatbychangingthedesignandreplacingthetypesofgasesuseditwillbepossibletoquadruple翻两番theefficiency.HoweverMcCulloch’sfridgeisstillinitsearlystages.It’sverymuchaprototypehesaiD.Giveusanothermonthandwe'llhaveitworking.72.AccordingtothepassageanearlyinventionbyAlbertEinstein_______.A.hasbeenrediscoveredbecauseitcostsmuchlessandworksmoreefficientlyB.isbeingredesignedbecauseitcouldbeusedinplaceswithoutelectricityC.hasjustbeenfoundtobeenergy-savingandenvironmentallyfriendlyD.willbefullymadeuseofandbecomethefridgeofthefuture73.WhichofthefollowingisTRUEaccordingtothetext?A.Freonwasusedinfridgeslongbeforethe1950s.B.Freoniswhatmakescurrentfridgesbigpolluters.C.McCullochthinkshecouldimproveEinstein'sdesignbyusingothertypesofvapors.D.ThefridgeMalcolmMcCullochandhisteamdesignedwillbeputintoproductionsoon.74.Wecanlearnfromthetextthattheprototypecompleted_______.A.changedtheairpressurearounditB.wastestedonthetopofMountEverestC.increasedtheliquidboilingtemperatureD.usedonlypressurizedgasestokeepthingscold75.McCulloch’swordsinParagraph6_____.A.serveasanexplanationfortheprinciplebehindEinstein’sfridgeB.giveyouthereasonwhyEinstein’sfridgewasnotefficientC.tellyouhowtotakeadvantageoflowairpressureD.showyouhowEinstein’sfridgeworks
Thesedayswehearalotabouthowairpollutionischangingtemperaturesontheearth.NewevidencefromamountaintopinChinanowsuggeststhatpollutioncanalsochangetheamountofrainandsnowthatfallsinsomeplaces.Usuallymorerainfallsinmountainousplacesthaninflatareasupwindfromthemountains.That’sbecauseaircanholdalotofwater.Whenwindblowswetairupamountainsidetheairgetscolder.Thistemperaturechangeoftenforceswatertofallasrainorsnow.InrecentyearshowevermanymountainousareasinthewesternUnitedStateshavebeengettinglessrainthannormal.Mountainsthataredownwindfromcitieshaveexperiencedthebiggestdrops.Somescientistshavetheorized推理thatpollutiondrifts趋势fromthecitiesintothemountainsaffectingrainfallbutprovingthislinkhasbeendifficult.SearchingforanswersateamledbyascientistfromtheHebrewUniversitywenttosmountaininChinacalledMountHuawhichis2060meterstallandliesabout120kilometerseastoftheChinesecityXi’an.Since1954scientistshavebeencollectingdetailsaboutrainfallhumidity湿度andvisibility能见度intheareA.UsingthisdatathescientistscomparedrainfallonMountHuatorainfallinthenearestcityHuayinondayswithdifferentlevelsofvisibility.Whentheairwasclearandpeoplecouldseeasfaras20kmthescientistsfoundthat65%morerainfellonthemountainthaninthecity.Butwhentheairwassmoggyallowingonly8kmofvisibilitythroughthemistthemountainreceivedjust20%morerainthanthecity.Thenewdatasupportsthetheorythatpollutionaffectsrainfall.Somescientistsbelievethatthereareotherexplanationsforthenumbers.It’spossibleforexamplethatnaturalparticles微粒intheairratherthanparticlesproducedbypollutionareaffectingvisibility.Accordingtothe1stparagraphairpollutionischangingthefollowingEXCEPT______.A.thetemperatureB.theamountofrainC.thehabitofeatingD.theamountofsnowAccordingtothepassagewhatwillprobablyhappenwhenthewetairintheskygetscolder?A.ItwillprobablyrainorsnowB.Itwillprobablybecloudy.C.ItwillprobablywindD.Itwillprobablybecomedry.WhydidtheteamledbyascientistgotoMountHua?A.TheywantedtopayavisittoMountHuA.B.Theywantedtocollectthedatafortheirtheory.C.TheywantedtomeasureMountHuA.D.TheywantedtohaveagoodrestonMountHuA.Youcanmostprobablyreadthepassagein_______.A.atravelguideB.atelephonebookC.acartoonbookD.asciencebook
JurassicParkcouldbecomearealitywithdinosaursmakingacomebackafteradiscoverylastweek.Scientistsfoundremainsofadinosaur’sbloodvessels血管andcells.IntheoryDNAfromthesecellscouldbeusedtoclonethelongdeaddinosaur.A.teamfromNorthCarolinaStateUniversityfoundtheremainsinafossil化石ofthelegboneofaTyrannosaurusrex暴龙inMontanaUS.ThelastdinosaursonEarthdiedsome65millionyearsagobuttheyleftbitsofthemselvesbehindwherevertheyliveD.Aroundtheworlddug-upbonesandfossilshavegivenscientistsmanyideasaboutwhattheanimalswerelikE.PreservedbymineralsthenewlydiscoveredlegbonewasharD.Sothescientistsusedaliquidtodissolve溶解theminerals.A.weeklatertheremainingmaterialwassoftandstretchy有弹性的whichsurprisedtheresearchers.Someofthematerialsappearedtobeanetworkofbloodvessels.Outofthesetheresearcherswereabletosqueeze挤出tinyrounddark-redanddeep-brownstructuresthatseemedtobeancientbloodcells.ScientistsareoverjoyedbythisdiscoverybecausemostfossilscomefromhardbodypartslikebonesandshellswhichlastalongtimE.Softtissueslikeskinmuscleandorgansareveryhardtofindbecausetheytendtobreakdownmorequickly.Scientiststhinkthatthenewdiscoverywillhelpthemtobetterunderstandhowfossilsform.FuturefindsshouldalsohelpfleshouthowthedinosaursliveD.TheywerealsoveryexcitedbythepossibilityofhavingsomedinosaurDNA.FromthatscientistscouldcreateareallifeJurassicPark.IntheHollywoodmoviescientistsreproduceddinosaursfromtheDNAtheyfoundinamosquitofossilanddisastersoonfolloweD.Scientistsareexcited_________________________.A.becausetheyhavegotdinosaurDNAB.aboutmakingamoviecalledJurassicParkC.becausetheyfoundtheliquidtodissolvefossilsD.becauseitsveryhardtofindsofttissuesinfossilsThelatestdiscoverycantellus.A.whattheanimalswerelikeB.howfossilsformC.howthedinosaurlivedD.howtogetdinosaurDNAWhatdoestheunderlinedphrasefleshoutmeaninthearticle?A.addmoredetailsorinformationtoB.takemorephotosofC.makethepublicknowmoreaboutD.findtheanswertoWhyisthelatestdiscoveryveryimportant?A.Itcouldmakeitpossibletomakedinosaursreturntotheformerposition.B.Itcouldthrowlightonhowdinosaurslivedmanyyearsago.C.ItcouldprovewhatdinosaurswerelikE.D.Itcouldexplainwhydinosaursdiedsome65millionyearsago.
热门题库
更多
高中化学
高中政治
电大政治学原理
电大护理学
电大保险学概论
炉台实战技艺
保险公司法规
财经法规
执业兽医水生动物类
社工招聘
安全生产主体责任知识
ACI注册国籍高级营养师
职业礼仪
初级药学士
危险化学品生产经营单位安全管理人员
社会研究方法
湘公网安备 43130202000226号