首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
Teachers and textbooks beware―your future could be under threat from a quickly developing and very s...
查看本题答案
包含此试题的试卷
高中英语《2011年廊坊1考试试题及答案》真题及答案
点击查看
你可能感兴趣的试题
Areyourchildrenlikedbytheirteachers?Allparentswant
阅读表达AmericanschoolsarequitedifferentfromthoseinChi
Be______whenyoucrosstheroad.
careless
beware
careful
carelessness
Areyourchildrenlikedbytheirteachers?Allparentswant
Onamorepracticallevelteachersneedawidevarietyofski
阅读理解TheaveragecollegestudentsinAmericaspentanestim
AmericanschoolsarequitedifferentfromthoseinChinA.I
阅读下面短文用括号内所给动词的适当形式填空必要时可加情态动或助动词Nowmorethan20scho
IntheUnitedStatesteachingisveryimportant.Ifteac
Go over the lessons thoroughly.
Understand the textbooks well.
Do the reading assignments.
Prepare an outline for discussion.
AmericanschoolsarequitedifferentfromthoseinChinA.I
Areyourchildrenlikedbytheirteachers?Allparentswant
Teachersoftennewtextbookstothestudentsatthebeginni
give away
give off
give out
give up
Bewhenyoucrosstheroad.
careless
beware
careful
carelessness
Whowantstocarryabulkybagtoschool?Nochildren.Nobody
Manyteachersbelievetbatchildrenlearn_________lifen
of
from
for
with
Whowantstocarryabulkybagtoschool?Nochildren.Nobody
Manyteachersdon'tliketouse{{U}}up-to-date{{/U}}tex
odd
modern
old
interesting
Thepricesoftextbooksarebecomingmoreandmoreexpensiv
StudentsatNorthwestMissouriStateUniversityhavestar
Electronicbookshavechangedthewaymanypeoplereadforp
热门试题
更多
Formorethantwentyyearsscientistshavebeensearchingforsignsoflifeonotherplanets.Mostofthesesearcheshavebeendoneovertheradio.Thehopeisthatsomeoneinouterspacemaybetryingtogetintouchwithus.Scientistsalsohavesentradioandtelevisionmessagesaswellasmessagesonspaceshipstravellingthroughspaceonthechancethatsomeonemaybereceptivetosuchmessages.Scientistsareusingpowerfulradiotelescopestolistentosignalsfromabout1000starsallwithin100lightyearsofEarth.Inadditiontheywillscan扫视theentireskytolistenforradiomessagesfrommoredistantstars.Usingacomputertheywillbeabletomonitormorethaneightmillionchannelsatonetime.Scientistsarelookingforanysignalthatstandsoutfromthebackgroundnoise.Ofthe200billionstarsintheMilkyWaygalaxyscientistsfindthatfivepercentarelikeoursun.PerhapshalfofthemhaveaplanetlikeEarth.Suchaplanetwouldbeareasonabledistancefromthestarfortemperaturestoberightfortheevolution进化oflife.Basedontheinhabitablethatcanbelivedinplanetsinourgalaxymostscientistsagreethatchancesarelikelythatoneormoreoftheseplanetssupportssomelife.Howevermanyscientistswonderwhetherintelligent有智力的lifeexistsonotherplanets.Somebelievethattwentyyearsofsearchingwithoutanyintelligiblemessagesshowsthatnooneisoutthere.Theysaythattheevolutionofintelligencecomparabletooursisunlikely.Otherscientistsbelievethatoursearchhasn'tbeenlongenoughtoruleoutthepossibilitythatintelligentlifeexistsinourgalaxy.Althoughoursunfamilyisonlyaboutfivebillionyearsoldourgalaxyisabout20billionyearsold.Inthattimesomescientiststhinkitislikelythatcivilizations文明muchmoreadvancedthanourshavedeveloped.Perhapsthesecivilizationssendusnosignalsperhapswehavenotrecognizedthesignalstheyhavesentus.Ifwehopetofindintelligentlifethescientistsbelievethatwehavetokeeplooking.68.AccordingtothepassagehowmanyplanetsinourgalaxymightbeinhabitableA.5billion.B.10billion.C.15billion.D.20billion.69.Thefirstparagraphinthispassageismainlyabout____.A.howscientistsarelookingforsignsoflifeonotherplanetsB.whyscientistsarelookingforsignsoflifeonotherplanetsC.wherescientistsarelookingforsignsoflifeonotherplanetsD.whenscientistsbegantolookforsignsoflifeonotherplanets70.Theunderlinedwordmonitorinthepassagemeans____.A.findB.followC.checkD.form71.WhichofthesestatementsistruebasedontheinformationinthepassageA.Theearthisoneoftheoldestplanetsinourgalaxy.B.Mostscientistsbelievethatthereisintelligentlifeonotherplanets.C.Scientistsaretryingdifferentwaystofindsignsoflifeonotherplanets.D.Scientistsdon'tbelievethatintelligentlifeexistsonotherplanets.
Mostpeoplefeellonelysometimesbutitusuallyonlylastsbetweenafewminutesandafewhours.Thiskindoflonelinessisnotserious.Infactitisquitenormal.Forsomepeoplethoughlonelinesscanlastforyears.Nowresearcherssaytherearethreedifferenttypesofloneliness.Thefirstkindoflonelinessistemporary.ThisisthemostcommontypE.Itusuallydisappearsquicklyanddoesnotrequireanyspecialattention.ThesecondkindissituationforexamplefamilyproblemthedeathoflovedoneormovingtoanewplacE.Althoughthiskindoflonelinesscancausephysicalproblemssuchasheadachesandsleeplessnessitusuallydoesnotlastformorethanayear.Thethirdkindoflonelinessisthemostserious.UnlikethesecondtypechronictheoppositeoftemporaryusuallylastsmorethantwoyearsandhasnospecificcausE.Peoplewhoexperiencehabituallonelinesshaveproblemssocializingandbecomingclosetoothers.Unfortunatelymanychronicallylonelypeoplethinkthereislittleornothingtheycandotoimprovetheircondition.Psychologists心理学家agreethatoneimportantfactorinlonelinessisaperson’ssocialcontactsforexamplefriendsfamilymembersco-workersetC.Wedependonvariouspeoplefordifferentreasons.Forinstanceourfamiliesgiveusemotionalsupportourparentsandteachersgiveusguidanceandourfriendssharesimilarinterestsandactivities.HoweverpsychologistshavefoundthatthoughlonelypeoplemayhavemanysocialcontactstheysometimesfeeltheyshouldhavemorE.Theyquestiontheirpopularity.Psychologistsaretryingtofindwaystohelphabituallylonelypeoplefortworeasons:theyareunhappyandunabletosocializeandthereisaconnectionbetweenchroniclonelinessandseriousillnesssuchasheartdiseasewhiletemporaryandsituationallonelinesscanbeasadandsometimesdangerouscondition.48.Howwouldyoutreattemporarylonelinessaccordingtothepassage?A.TalktofriendsB.JustignoreitC.GotoseeadoctorD.Askyourteachersforguidance49.Whydopsychologistswanttohelpchronicallylonelypeople?A.ChroniclonelinesscancausefamilyproblemsB.ChroniclonelinesscancauseseriousillnessC.ChroniclonelinesscannotbeovercomeD.Chroniclonelinessisincurable50.Lonelinessisdividedaccordingto_____.A.thetimeitlastsB.theplaceswhereitappearsC.differentpeopleithappenstoD.differentseasonswhenitappears51.Whatisthebesttitleforthepassage?A.ThreekindsoflonelinessB.LonelinessanddiseasesC.LonelinessandsocialcontactsD.Chronicloneliness
EmptyDesertsInthe19thcenturyAmericansfromtheeasternstatesmovedoutwesttosettleintherichnewlandsalongthePacificcoast.ThemostdifficultpartoftheirtripwascrossingtheGreatAmericanDesertinthewesternpartoftheUnitedStatesbyhorseandwagon.Thewesterndesertcanbeverydangerous.Thereislittlewaterandtherearefewtrees.Butthedesertalsohassceneryofgreatbeauty.Talltowersofredandyellowstonerisesharplyfromtheflatsandyvalleyfloor.ThescenehasbeenphotographedmanytimesandappearsinmoviesandinTV.InArizonamanmadedams大坝acrosstheColoradoRiverhavemadetwolargelakesinthemiddleofthedrydesertcountry.AtLakePowelltheredstonearch弓形结构ofRainbowBridgeriseshighabovethebluelakE.Therearefewroads.ManyareasofLakePowell’sshorecanonlybereachedbyboatoronfoot.ButhikersinthisemptydesertlandsometimesfindveryoldnativeAmericanpicturespaintedontherocks.InDeathValleyCaliforniathesummertemperaturerisesto130degrees.Thereislessthantwoinchesofraineachyear.DeathValleyisthelowestplaceinAmerica――925metersbelowsealevel.Inthe1800smanytravelersdiedwhentheytriedtocrossthiswaterlessvalleyintheterribleheat.Althoughthedesertisdryandseemsemptythereisplentyoflifeifyoulookclosely.Smallinsectssnakesandratshavelearnedhowtoliveinthedesertheat.Theyliveundergroundandcomeoutatnightwhenitiscool.Plantssuchascactineedverylittlewater.Whenitdoesraininthedesertsometimesonlyonceortwiceayearplantsgrowquicklyandflowersopeninasingleday.Forashorttimethedesertiscoveredwithbrilliantcolors.36.Inthe19thcenturyAmericansmovedfromtheeasttothewestbecausethey______.A.enjoythetripB.wantedtomaketheirhomethereC.wantedtofindnewgrasslandthereD.hadnowatertodrink37.Fromthepassagewecanconcludethat______.A.thewesterndesertisagoodplaceforpeopletoliveinB.thereislittlewaterbuttherearemanytreesinthedesertC.thedesertisdangerousbutitisfulloflifeD.tillnowpeopleknowlittleaboutthedesert38.Inthe1800smanytravelersdiedinDeathValleybecauseof______.A.illnessB.hightemperatureC.coldweatherD.poisonouswater39.Inthedesertanimalswilldie______.A.iftheymoveaboutB.iftheycannotmakeholesundergroundC.iftheycomeoutatnightD.iftheydrinkmuchwater
Chinatolaunch1stlunarprobechang’E1thisyearChinasaysthelaunchofitsfirstlunarprobechang’E1isjustaroundthecorner.ChinesescientistsmadetheannouncementonWednesdaysayingthesatellitewouldbelaunchedinthesecondhalfofthisyear.SinceChinaannouncedtheprojectin2004thecountry’sfirstlunarexplorationprojecthasdrawnworldwideattention.NowChina’sspacescientistssaythesatelliteisreadyforlift-off.OuyangZiyuanchiefscientistChina’slunarexplorationprojectsaidPreparationsforthesatelliterocketgroundcontrolanddatareceptionarereadyfortheexploration.Wewillbeabletolaunchtheprobethesecondhalfofthisyear.Theprobe’soperationalorbithasalreadybeendecidedonandchang’E1isscheduledtoenterthemoon’sorbitafteranearly400000-kilometerjourneyinspacE.Andacommitteeofover100spaceexpertshasalsobeenestablishedfortheproject.Thescientistshaveagreedtosharethedatasentbackbychang’E1onthelunarenvironment.OuyangZiyuansaidWewillmakea3Dmapofthemoonandresearchthedistributionoflunarelementslunarsoilthicknessandthemoon’ssurfaceenvironment.OuyangZiyuansayschang’E1willbecarriedbyalongmarch3acarrierrocketforitslaunch.ThisisscheduledtotakeplaceattheXi’changsatellitelaunchcenter.49.Whatdoestheunderlinedwordsaroundthecornerinthefirstparagraphmean?A.inthecornerB.onthewayC.inthewayD.atthecorner50.Whatwillchang’E1doinspace?A.Itwilljustcirclearoundthemoon.B.Itwillmakea2dmapofthemoonandresearchthedistributionoflunarelements.C.ItwillsendtheTVsignalstomakeourlifemorecolorful.D.itwillmakea3Dmapofthemoonanddosomeresearchaboutthemoon.51.WhichoneofthefollowingstatementsisTRUE?A.Thecommitteeismadeupoflessthan100spaceexperts.B.Itisscheduledtolaunchatthejiuquansatellitelaunchcenter.C.Thedatasentbackbychang’E1willbesharedbythescientists.D.chang’E1willbecarriedbyalongmarch3acarrierrocketforitslaunch.
AnotherofPresidentBush’scriticsonclimatechangeandhisformerrivalfortheWhiteHouseAlGoreisinLondononFridaytolaunchanenvironmentalprojectwiththeheadoftheVirginBusinessCompanyRichardBranson.They’reannouncingamulti-milliondollarinternationalprizetoencouragedevelopmentandresearchintonewformsoflowcarbontechnology.TheprizewillbeavailabletoanyonewhocanapplyasuccessfulmethodofremovinglargeamountsofcarbondioxidefromtheatmospherE.AlmostallscientistsagreethatweareexperiencingglobalwarmingduetoincreasedamountsofcarbondioxideintheatmospherE.CarbondioxideisreleasedwhenfuelisburneD.Oilcoalandwoodareallfuelsthatreleasethegas.WhenbiologicalwastedbreaksdownitalsoreleasescarbondioxidE.Environmentalcampaignersandclimatechangescientiststelluswe’repumpinganunbearableamountofcarbondioxideintotheatmospherE.Onewaytoreducethatwillbetouselessfossilfuel矿物燃料theburningofwhichisakeyresourcetoourwayoflifebutsharpreductionofoilandcoaluseisunpopularwithgovernmentsandpeoplealikE.Sotechnologiesarebeingdevelopedlikecarboncaptureandstoragethataimtotakecarbondioxideoutoftheatmospherecompress压缩itandpumpitintothegrounD.Butthat’sstillinitsearlystagessothepurposeofthisprizeistoencourageresearchintonewwaysofdecarbonizingtheatmospherE.A.scientificpanelchairedbyAlGorewilljudgeanyentries.Environmentalcampaignersarehopingsuchasignificantprizewillattractlargeamountsofpublicityandbrainpower.56.Whichofthefollowingsentencesiscorrectaccordingtothetext?A.AlGoredoesn’tagreewithPresidentBush’sPolicyonclimatE.B.OnlyagrouporanorganizationwillreceivetheprizE.C.TheprizewillbegiventoanyonewhocandoresearchintolowcarbontechnologyD.AlGorewouldliketohelpPresidentBushtosolvetheproblem.57.Carbondioxidewillbeproducedwhen.A.weareexperiencingglobalwarming.B.fossilfuelisburnedC.biologicalwasteisthrownaway.D.gasisreleased58.Peoplewouldliketoremovecarbondioxidefromtheatmospherebuttheydon’tlikethemethodof.A.compressingitandpumpingitintothegroundB.burningthefossilfuelC.pumpingitintotheatmospherE.D.reducingtoomuchfossilfuel59.Whatisthemainideaofthepassage?A.WeshouldpaymoreattentiontothesolutiontoanenvironmentalproblemB.Anprojectislaunchedtoawardthosewhocanfindwaystosolveanenvironmentalproblem.C.AlGoreisgoingtopresentaprizetothepersonwhocansolveanenvironmentalproblem.D.A.lotofpeoplewillapplymethodstosolveanenvironmentalproblem.
Icelandhasenergytospareandthesmallcountryhasfoundacutting-edge尖端的waytoreduceitsoildependency.Volcanoesformedtheislandnationoutofashandlava熔岩whichheathugeundergroundlakestotheboilingpoint.Thehotwaterispipedintocitiesprovidingheatforhomesbusinessesandevenswimmingpools.Thewaterrunsthroughturbines涡轮机providingallthecountry’selectricity.Icelandwantstomakeplanstoimproveitscarsbusesandtruckstorunonrenewableenergy.Icelandhasalreadystartedbyturningwaterintofuel----hydrogen氢fuel.Here’showitworks:Electrodes电极changethewaterintohydrogenandoxygenmolecules分子.HydrogenelectronspassthroughaconductorthatcreatesthecurrenttopoweranelectricenginE.HydrogenfuelnowcoststwotothreetimesasmuchasgasolinebutgetsuptothreetimesthedistancethangasmakingtheoverallcostaboutthesamE.Asanaddedbenefitthereisnocarbon碳----onlywatersteam.InthecapitalReykjaviktheyarealreadytestingthreehydrogen-poweredelectricbuses.ThedriversareimpresseD.IlikethesebusesbetterbecausewithhydrogenyougetnopollutionsaidbusdriverRognvaldurJonatanison.BythemiddleofthiscenturyallIcelanderswillberequiredtoruntheircarsonlyonhydrogenfuelmeaningnomoregasolinE.IfwemakehydrogenandusethatasafuelfortransportationthenwecanrunthewholesocietyonourownlocalrenewableenergysourcessaidMarieMack.Icelandersareshowingtheworldthatbymakingfuelfromwateritispossibletokicktheoilhabit.57.FromParagraph1wemayinferthat________.A.IcelandlacksnaturalresourcesB.volcanoesdomoregoodthanharmtoIcelandC.IcelandonlydependsonoilforenergyD.Iceland’selectricityismadefromcoal58.WhichofthefollowingisnecessaryduringtheperiodofturningwaterintofuelaccordingtoParagraph2?A.LavaB.ElectricengineC.ConductorD.Turbine59.Thecarswithhydrogenasfuel________.A.areenvironmentallyfriendlyB.arecheaperC.runmuchfasterD.willmakeusefulsteam60.Whatwouldbethebesttitleforthepassage?A.PollutionsayinggoodbyetotheworlD.B.IcelandbecomingacountrywithoutoilC.IcelandbegantoturnwaterintofuelD.Manabletokicktheoilhabit
Spaceisadangerousplacenotonlybecauseofmeteors流星butalsobecauseofraysfromthesunandotherstars.Theatmosphereagainactsasourprotectiveblanketontheearth.Lightgetsthroughandthisisnecessaryforplantstomakethefoodwhichweeat.HeattoomakesourenvironmentsuitabletolivE.Variouskindsofrayscomethroughtheairfromouterspacebutenormousquantitiesofradiationfromthesunarescreenedoff.AssoonasmenleavetheatmospheretheyareexposedtothisradiationbuttheirspacesuitsorthewallsoftheirspacecraftiftheyareinsidedopreventalotofradiationdamagE.RadiationisthegreatestknowndangertoexplorersinspacE.Theunitofradiationiscalledrem.Scientistshavereasontothinkthatamancanputupwithfarmoreradiationthan0.1remwithoutbeingdamaged;thefigureof60remshasbeenagreedon.Thetroubleisthatitisextremelydifficulttobesureaboutradiationdamageapersonmayfeelperfectlywellbutthecellsofhisorhersexorgansmaybedamagedandthiswillnotbediscovereduntilthebirthofdeformed畸形的childrenorevengrandchildren.MissionsoftheApolloflightshavehadtocrossbeltsofhighradiationandduringtheoutwardandreturnjourneystheApollocrewaccumulatedalargeamountofrems.SofarnodangerousamountsofradiationhavebeenreportedbuttheApollomissionshavebeenquiteshort.Wesimplydonotknowyethowmenaregoingtogetonwhentheyspendweeksandmonthsoutsidetheprotectionoftheatmosphereworkinginaspacelaboratory.Drugsmighthelptodecreasethedamagedonebyradiationbutnoreallyeffectiveoneshavebeenfoundsofar.49.AccordingtothefirstparagraphtheatmosphereisnecessarytomanbecauseofthefollowingreasonEXCEPT________A.protectinghimagainsttheharmfulraysfromspaceB.providingsufficientlightforplantgrowthC.supplingtheheatnecessaryforhumansurvivalD.screeningoffthefallingmeteors50.Welearnfromthepassagethat________A.exposuretoeventinyamountsofradiationisfatalB.theeffectofexposuretoradiationisslowincomingC.radiationisavoidableinspaceexplorationD.astronautsinspacesuitsneedn’tworryaboutradiationdamage51.TheharmradiationthathasbeendonetotheApollocrewmembers________A.isinsignificantB.isenormousC.seemsoverestimatedD.remainsunknown52.Itcanbeinferredfromthepassagethat________A.theApollomissionwasverysuccessfulB.theprotectionfromspaceradiationisnoeasyjobC.astronautsmaypossiblyhavedeformedchildrenorgrandchildrenD.radiationisnotathreattowell-protectedspaceexplorers53.WhichofthefollowingisTRUE?A.Spaceisdangerousonlybecauseofmeteors.B.ExplorersinspacehavetoavoidthedamagefromradiationC.Wehavegoteffectivewaystotreatillnessescausedbyradiation.D.Theatmospheredoesn’tscreenoffradiation
ItwasoncethoughtthatairpollutionaffectedonlytheareaaroundlargeurbandistrictswithfactoriesandheavyautomobiletraffiC.Todayweknowthatalthoughthesearetheareaswiththeworstairpollutiontheproblemisliterally=reallyworldwidE.OnseveraloccasionsoverthepastdecadeaheavycloudofairpollutionhascoveredtheentireeasternhalfoftheUnitedStatesandledtohealthwarningseveninruralareasawayfromanymajorconcentrationofmanufacturing制造业的andautomobiletraffiC.Infacttheveryclimateoftheentireearthmaybeaffectedbyairpollution.Somescientistsfeelthattheincreasingconcentrationofcarbondioxideintheairresultingfromtheburningoffossilfuelsiscreatingagreenhouseeffectholdinginheatreflectedfromtheearthandraisingtheworld’saveragetemperaturE.Ifthisviewiscorrectandtheworld’stemperatureisraisedonlyafewdegreesmuchofthepolaricecapwillmeltandcitiessuchasNewYorkBostonMiamiandNewOrleanswillbeunderwater.Anotherviewlesswidelyheldisthatincreasingparticulatematter颗粒物质intheatmosphereisblockingsunlightandloweringtheearth’stemperaturearesultthatwouldbeequallydisastrous损失惨重的.A.dropofjustafewdegreescouldcreatesomethingclosetonewiceageandwouldmakeagriculturedifficultorimpossibleinmanyofourtopfarmingareas.Atpresentwedonotknowforsurethateitheroftheseconditionswillhappenthoughonerecentgovernmentreportpreparedbyexpertsinthefieldconcludedthatthegreenhouseeffectisverylikely.Perhapsifweareveryluckythetwotendencieswilloffseteachotherandtheworld’stemperaturewillstayaboutthesameasitisnow.51.Aspointedoutatthebeginningofthepassagepeopleusedtothinkthatairpollution.A.causedwidespreaddamageinthecountrysideB.affectedtheentireeasternhalfoftheUnitedStatesC.haddamagingeffectsonhealthD.existedmerelyinurbanandindustrialareas52.Asfarasthegreenhouseeffectisconcernedtheauthor.A.sharesthesameviewwiththescientistsB.isuncertainofitsoccurrenceC.rejectsitasbeingungroundedD.thinksthatitwilldestroytheworldsoon53.ThewordoffsetParA.2couldbestbereplacedby.A.slipintoB.makeupforC.setupD.catchupwith54.Itcanbeinferredfromthepassagethat.A.raisingtheworld’stemperatureonlyafewdegreeswouldn’tdomuchharmtolifeonearthB.loweringtheworld’stemperaturemerelyafewdegreeswouldleadmanymajorfarmingareastodisasterC.almostnotemperaturevariationshaveoccurredoverthepastdecadeD.theworld’stemperaturewillremainconstantintheyearstocome55.Thispassageisprimarilyconcernedwith.A.thegreenhouseeffectB.theburningoffossilfuelsC.thepotentialeffectofairpollutionD.thelikelihoodofanewiceage
Evenbirdbrainscangettoknowanentirecontinent-----butittakesthemayearofmigrationtodososuggestsaPrincetonresearchteam.Thescientistshaveshownthatmigrationadultsparrowscanfindtheirwaytotheirwinternestinggroundsevenafterbeingthrownoffcoursebythousandsofmiles.Theteamfirstbrought30sparrowstoPrincetonfromnorthernWashingtonStatewherethebirdshadbeenintheprocessofmigratingsouthwardfromtheirsummerbreedinggroundsinAlaska.Halfthebirdswerejuveniles少年ofaboutthreemonthsinagethathadnevermigratedbeforewhiletheotherhalfwereadultsthathadmadetheroundtriptotheirwinteringsiteinthesouth-westernUnitedStatesatleastoncE.Afterthebirdswerereleasedtheyattemptedtoresume重新开始theirmigrationbutbothagegroupgrewdisoriented迷失方向quickly.Allthebirdsscattered分散atfirstWikelskisaiD.Itwasclearthattheywereturnedaroundforacoupleofdays.ButwhiletheadultseventuallyrealizedtheyhadtoheadsouthwesttheyoungerbirdsresumedflyingstraightsouthwardasthoughtheywerestillinWashington.TheadultssaidteammemberRichardHollandrecoveredtheirbearingsbecausetheypossesssomethingtheyoungerbirdsdonotwhichisaninternalmap.Thesebirdsneedtwothingstoknowwheretheyareandmigrateeffectively:a‘map’anda‘compass’saidHollandapostdoctoralresearchassociateinWikelski’slaB.Whatwe’vefoundisthatjuvenilesusetheircompassbuttheadultsalsousetheirmap.HollandsaidThebirdsdonotlosethecompassastheyagebutsomehowdevelopthemapeventuallyapplyingbothtoolstokeepontrackduringmigratoryflights.Scientistsalreadyhavedeterminedthatthecompassisbasedonthesunorthemagneticfieldbutwherethemapcomesfromremainsamystery----onethattheteamwillbeexploringincomingyears.52.Wheredidthe30sparrowsspendtheirsummer?A.PrincetonB.WashingtonC.AlaskaD.InthesouthwesternUnitedStates53.Wecanknowfromthepassagethatthejuvenilesofsparrows_____.A.willfollowtheadultsintheirflightsB.willfindtheirdestinationeventuallyC.willlosethecompassastheyageD.stilllackaninternalmap54.Scientistsarestillnotsure______.A.whatguidessparrowsintheirmigratoryflightsB.whata‘compass’isbasedonC.whata‘map’isbasedonD.inwhatwaymagneticfieldcanhelpsparrowsintheirflight55.Wecanconcludefromthelastparagraphthat_____.A.sparrowsneedbotha‘map’anda‘compass’inmigratoryflightsB.onlytheadultsneeda‘map’toguidetheminmigratoryflightsC.themapismoreimportantthanacompassD.theadultsparrowscanrelyona‘map’ora‘compass’
Americahopestostartbuildingabasethatcancontributetoexistallthetimeonthemoonwithin20years.Bythemid-2020sastronautswillbestayingthereforsixmonthsatimE.Sowhatdoscientiststhinkfoodandwaterwillbelikeforthosefirstmoonresidents?IntheshorttermfoodwouldhavetobebroughtfromEarth.Thedreamhoweveristogrowthingsingreenhousesonthemoon.You’dgrowthingsinliquid---there’snoreasonwhythatwouldn’tworksaysPillingeraprofessor.Thiswouldmeanfloatingplantsinanutrient-richsolutionofwater.Soilisnotanecessarythingforplants;it’sonlytokeepthemstandinguprightPillingeradds.Itwouldtakeatleastadecadeofexperimentsafterthebasewasbuiltbeforesuchaplanwouldworkhowever.Themainproblemisworkingouthowtogetnutrientsfromthelunar月球的soil.Gettingallthattoworkrequiresaminimumlevelofinfrastructure基础设施presentbeforeyoucanstartexperimentingwithgreenhousessaysPillinger.Findingstrongplantstogrowinspacewillalsobehardthoughscientistsarealreadyworkingonit:scientistAmyGrundenofNorthCarolinaStateUniversityhasbeenworkingongeneticallyengineeringfoodcropsthatcanbegrowninharsoff-planetenvironment.Waterisasomewhateasierprospect前景.OneofthereasonsthatAmericawantstoputitsbaseatthemoon’ssouthpoleisthatitthinksthatinthepermanentlyshadedcraterstherearelargepoolsoffrozenwater.Ifthatistrueitcouldeasilybeminedandusedtodrinkandtocreateoxygenforthehabitants.41.Thepassageismainlyabout______.A.lifeonthemoonby2020B.America’sfirstmoonbasethatexistsforeverC.foodandwateronthefuturemoonbaseD.housingforsettlersonthefuturemoonbase42.Howdopeopleplantonthemooninthefuture?A.ByburyingplantsinthelunarsoilB.Bygrowingplantsinwater.C.Bykeepingplantsstandingstraight.D.Bymakinguseofthemoonlight43.Whatdifficultywillscientistsmeetinsolvingthefoodproblem?A.Howtofindwatertoirrigateplants.B.Wheretoexperimentwithplants.A.Howtogrowplantsinthemoonsoil.D.Whatplantsaresuitabletogrowinthemoon44.Scientistswanttobuildthebaseonthemoon’ssouthpolebecause_______.A.thereisoxygenforpeopletobreatheB.peoplehavefoundthefrozenwaterthatcanbedrunkthereC.itisaplacewherewaterwillpossiblybefoundandsuppliedD.therearelargepoolsthatcanletpeoplehaveaswim.
Whenyouchooseafreezerrememberit’sprobablygoingtobewithyouforalongtimE.Soit’simportanttoknowwhichfreezerisrightforyourneeds.Firstdecideifyouwantanuprightorchestmodel.Uprightsaremoreconvenient.TheirstoragespaceismoreaccessibleandtheytakeuplessfloorareA.Howeverchestmodelsaremoreenergy-efficientbecauselesscoldairescapeswhentheyareopen.Ifyouarebuyinganuprightyou’llhavetochoosebetweenfrostless无霜ormanual手动的defrost解冻.Chestfreezersarealwaysmanual.Frostlessfreezersautomaticallydefrostatpresentintervals每隔一段时间andremovethewater.Manualmodelsmustbedefrostedbyhandeveryfewmonthsorwheneverfrostpileuptoaboutaquarterofaninch.Tohelpyourfreezerreacharipeoldagetrytofindaspotthat’scooldryandawayfromdrafts精棉.Draftsandheatwillraisethefreezer’scabinettemperaturewhichmakesitworkhardertokeepcool.Thatmeanswastedenergy.ThatmeanswastedenergyandashortenedlifE.Dryairisimportantbecausehighhumidity湿气cancausethefreezertorustoutsideandfrostupinsidE.Withpropercareafreezercanserveyoufor15yearsormorE.Regularcleaningandsimplemaintenancewillhelpitmaintainazero-degreetemperatureandkeepitsmellingfreshandlookingalmostnew.Frostlessmodelsrequireslesscarethanmanualdefrostfreezers.TheinsideofafrostlessunitshouldbewashedperiodicallywithwarmwaterandbakingsodaoramildsoaprinseanddrieD.Goodhabitsgoalongwaytowardafreezerthatrunsefficiently.Togetthemostfromyourfreezercheckregularlytomakesureit’sprovidingatruezero-degreetemperaturE.Keepthefreezeratleastthree-quartersfull.TheemptieritgetthemoreenergyiswasteD.Ifmorethanthreepoundsoffoodpercubicfootofstoragespaceisaddedevery24hourstheresultinghighorlowtemperaturecandamagethefooD.72.Whatcanwelearnfromthispassage?A.Itismoreimportanttokeepthefreezeratthetemperatureofzero-degreE.B.Itisaneasytasktohaveyourfreezerserveyoufor15years.C.Youdon’thavetoworryaboutdefrostingifyouchooseachestfreezer.D.Theopeningoffreezershasnothingtodowithenergy-saving.73.Accordingtothepassagechoosingthebestplaceforyourfreezermeans_____.A.puttingitinanunheatedgarageifpossibleB.locatingitnearastoveifitisamanual-defrostedmodelC.tryingtokeepitawayfromheatdraftsandhumidityD.locatingitascloseaspossibletothekitchendoor74.Inordertogetthebestresultsyoushould______.A.usecoolwatertowashtheinsideoffrostlessmodelsB.keepthefreezeratleast75%fullC.addthreepoundsoffoodevery24hoursD.putyourfreezerinagaragewithastrongfloor75.Whichstatementbestdescribesthemainideaofthepassage?A.Ittellsthemosteconomicalwaystouseafreezer.B.Itexplainshowtodefrostamanual-defrostedfreezer.C.Itintroducestheadvantagesanddisadvantagesoftwokindsoffreezers/D.Itgivesusefuladviceonhowtochooseandmaintainafreezer.
Riceplantsnormallygrowwellinstillwater.Butmostwilldieiftheyarecompletelyunderwaterformorethanfourdays.Nowresearchershaveidentifiedagene基因thathelpsricesurvivelongerunderwater.Theysaythediscoverywillleadtonewkindsofriceplantsthatcansurvivefloodingandthereforereachtheirfinalaimensuringmoredependablefoodsupplies.TestsarenowbeingdoneinLaosBangladeshandIndia.Theresearcherssayexperimentalriceplantswiththegenehavesurvivedunderwateraslongastwoweeks.Whenfloodinghappensmostkindsofriceplantscannotgetenoughoxygencarbondioxideorsunlight.Butthescientistssaycroplossdependsonseveralconditions.TheseincludesoilconditionsandplantagE.Othersincludetheamountoftimetheplantisunderwaterandtheamountoffertilizer肥料usedonthecrop.Onagenetic遗传的mapofricethescientistsbecameinterestedinagroupofthreegenes.TheyexperimentedwithoneofthemageneknownasSub-One-A.Theyfoundthatwhenthisgenebecomesveryactiveitimprovestheabilityofricetosurvivelongerwhenriceiscoveredbywater.Theybelieveitsucceedsbecauseitaffectsthereactiontohormones荷尔蒙.TheycontroltheabilityofafloodedplanttosurvivE.PlacingthegeneintoriceplantsthatareespeciallygoodforconditionsinIndiaresearcherssaythegeneticallyengineeredplantsnotonlysurvivedbutalsoproducedgoodcrops.TheresearchersarenowtryingtoidentifyallthegenesgovernedbytheSub-One-AgenE.Beingabletoleavewateronriceplantsforanadditionalweekmightalsohelpfarmerspreventthegrowthofweeds.Lessweedgrowtharoundtheircropswouldmeanlessneedforherbicide除草剂chemicals.41.CroplossdependsonallthefollowingconditionsEXCEPT_______.A.soilconditionsandplantageB.theamountofwatertheplantstandsinC.theamountoffertilizerusedonthecropD.theamountoftimetheplantisunderwater42.Whatisthefinalaimofthisresearch?A.Toidentifythegenethathelpsricesurviveunderwater.B.Toincreasetheabilityofricetofightagainstfloods.C.Tohelpfarmersspendlesstimeremovingweeds.D.Tomakesureofenoughfoodsupplies.43.WhatdoestheunderlinedwordTheyinParagraph3referto?A.Genes.B.Theexperiments.C.Geneticallyengineeredplants.D.Hormones.44.Whatwouldbethebesttitleforthepassage?A.RiceresearchisgoingoninLaosandIndiaB.HowtoreducetheinfluenceoffloodsonriceC.Generesearchersworkonflood-resistantriceD.A.greatdiscoveryintheagriculturalfield
Publishingonpaperwilldrawuptoanendinthenext30years.That’swhatsomehigh-techexpertshavesaideversincecomputersbeganappearingineveryone’sworkplacE.IfyouhaveeverreadanewspaperonlineyouhaveexperiencedatinypartofwhatpaperlessfuturelooklikE.Newtechnologywillcertainlycontinuetorevolutionizewrittencommunication.Butwilltheuseofpaperinoureverydaylivesreallydisappearanytimesoon?Welldon’tgiveuponpaperjustyet.PaperanancientChineseinventionhasdominated主宰writtencommunicationforcenturies.CaiLunanofficialintheChineseImperialCourtiswell-knownforinventingpaperinA.D.105.Thisinventionchangedtheworldforever.Todaysurprisinglyitseemsthedigitalagehasactuallystrengthenedtheimportanceofpaper.Studiesshowthatpaperusehasdoubledinthelast20years.Peoplestillliketoprinttheirlongerdocumentsande-mails.Buttoday’stechnologyisrapidlyimproving.AndeffortstowardapaperlessworldcontinuE.TheInternetisclearlyonegiantstep.ManyofthepublicationshavecreatedWebsitesthatoffereverythingintheirpapereditions―andevenmorE.TheirWebsitescanbecontinuallyupdatedasnewshappens.OthertypesofmaterialhavealsofitwellintothedigitalagE.Dictionariesandotherreferencebooksactuallyworkbetterinapaperlessformat.InformationpublishedonaWebsiteorCD-ROMcanbekeptmorecurrent.Inadditionpublishershavebeguntoproducee-bookversionoftheirbestsellers.Newe-bookreaders---asimplecomputeraboutthesizeofapaperbackbook―canstorenearlyahundredbooks.Bute-bookshaven’tgainedalargefollowing.ReadingfromacomputerissimplyuncomfortableandpaperbackbooksareeasiertocarryarounD.64.Whichofthefollowingisnottrueaccordingtothepassage?A.Theinventionofpaperrevolutionizedwrittencommunication.B.PublishingonpaperwilldisappearinthenextdecadE.C.Mostbookswillcontinueinpaperfornow.D.Digitalbooksarereadonacomputerscreen.65.Whatsurprisesustodayisthatthedigitalagemakespeoplerealize______________.A.theimportanceoftheuseofpaperB.theimportanceofpaperlessworkplaceC.thepaperlessfuturewillcomesoonerorlaterD.howimportantpaperhasbeeninthelast20years66.Whatisnotincludedasaresourceofpaperlessmaterialinthepassage?A.e-booksB.CD-ROMC.anewspaperonlineD.dictionariesandotherreferencebooks67.TheInternetisclearlyonegiantstepimpliesthat__________.A.ItoffersyouanopportunitytoexperienceapartofpaperlessfuturE.B.ThisnewtechnologyfitswellintothedigitalagE.C.A.substituteforpapermightsomedaybeareality.D.Fornowtheworldwillcontinuetostickwithwhatworks.
Fourhundredandthreebabiesarecryingloudly.Doyouknowhowtomakethemquietin41seconds?ThereisanamazingnewproductonsaleinJapanwhichdoesexactlythis.ItisanLPalong-playingrecordofsoundsfrominsideamother’sbodywhichahospitaldoctorrecordeD.IntestswiththerecordsheplayedtheLPto403cryingbabies.After41secondsnotonebabywascryingand161ofthemweresleeping.TherecordbeganasanexperimentbyProfessorHajimeMinookaoftheNipponMedicalUniversitynearTokyo.Hewaslookingforsomethingnaturalthathelpednew-bornbabiesgotosleep.Thesoundofthemothers’heart-beatandotherbodysoundsarethethingsthebabiesheardinsidetheirmothers.Theyfeelsafeandhappywhentheyhearthesesoundsagain.Andtheygotosleep.HospitalsinOsakaandTokyoareusingtheLP.10000youngcouplesareusingittoo.ToshibaMusicCompanywhomakesandsellstherecordsisveryhappy.OneandahalfmillioncouplesmarryeveryyearinJapan.ManywillhavebabiessotheLPwilldefinitelybeahit!65.WhichofthefollowingisTRUEaccordingtothepassage?A.About55%ofthecryingbabiesfellasleepafter41secondshearingtheLP.B.TheLPsoundswerefirstrecordedbyProfessorHajimeMinookA.C.TheLPisproducedandsoldbyToshibaMusicCompany.D.OnemillionandahalfbabiesareborninJapaneveryyear.66.Babiesfeel______whentheyheartheseLPsounds.A.thesoundstobetheirmothers’voicesB.asiftheywereinsidetheirmothersC.themusicnaturalandsoftD.themselvessleepingtogetherwiththeirmothers67.Itcanbeinferredfromthepassagethat______.A.TheLPwillbeapopularthinginthefutureB.HospitalsinOsakaandTokyowillmakealotofmoneyC.New-bornbabiesaresensitivetomusicD.MorebabieswillbeborninJapan
Everyyear2.2milliontonsofoilarespilledintotheocean.Actuallythisonlyamountstoasmallpercentageofthetotal1.6billiontonsofoilshippedaroundtheworldeachyear.HoweverthisspilledoilhasterribleeffectsonoceanlifeincludingthecoastlineswheretheoilwashesupontoshorE.Someofthelargestspillsinhistorywerecausedbyoiltankersrunningintoeachotherorbyanoiltankersailingintoshallowwaterandhittingthebottomoftheocean.AfterthesespillsofficialstrytodiscoverwhoorwhatwasatfaulttohelppreventsimilaraccidentsinthefuturE.OneoftheworstoilspillsinhistoryoccurredalongtheAlaskancoastlinein1989.Inthisaccident42000tonsofoilspilledfromatankerwhichresultedinterribledamagetothissensitivenaturalareA.Inthisspillthetanker’scaptainwhowastiredfromoverworkanddrinkingalcoholhadgonetotakearest.HegavecontroloftheshiptothethirdmatE.ThethirdmatewasunfamiliarwiththepaththeshiptookandherantheshipontoBligheReef.BligheReefisanaturalunderwaterrockwallneartheAlaskancoast.Damagedbythereeftheshipleakedoiloutintotheocean.Morethan1600kilometersofcoastlinewereaffectedbytheoilspill.Somescientistswhostudiednatureintheareaguessedthat580000birdsand5500ottersdiedwhentheoilfromthespillcoveredtheirskin.Aswellsmallershellfishandotherseacreatureswerelatereatenbysealswhalesandotheranimals.ThemostoileverspilledwasactuallydumpedonpurposeasanactofecologicalwarfarE.Thetermecologicalwarfaremeanstofightbydoingharmtonatureintheareaunderattack.In1990IraqsentsoldiersintoKuwaitandsetoffthePersianGulfWar.AspartoftheIraqwarplan9000000tonsofoilwereletoutintothePersianGulfbyIraq.Thisoilcovered1500squarekilometersofwaterinthePersianGulf.Theoilalsodamaged650kilometersofthecoastlineofbothKuwaitandSaudiArabia.Insomeplacesoilfloatingonthewaterwasmeasuredtobe43centimetersthick.Waterbirdswaterplantsandbabyfishwereallseriouslyaffectedbytheoil.Thelong-termeffectsofthisactonthefoodchainintheareaareboundtocauseproblemsfarintothefuturE.55.Whichcauseofoilspillsisdescribedinthesecondparagraph?A.Dumping.B.War.C.Accidents.D.Throwingaboutcarelessly.56.ThecreaturesaffectedbytheoilspillnearAlaskawere.A.birdsandottersB.shellfishC.sealsandwhalesD.alloftheabove57.Thethirdmateranthetankeraground触礁inthisaccidentbecause.A.hewastiredB.hewasdrunkC.hewastalkingonthephoneD.hedidnotknowthearea58.wasresponsiblefordumpingoilintothePersianGulf.A.TheUnitedStatesB.KuwaitC.SaudiArabiaD.Iraq
ResearchersintheUnitedStatessaydustcloudsfromdryAfricandesertsmaybeathreattotheenvironmentandhumanhealth.Theysaythedustmaycontainmanysmallorganisms有机物thatcouldbedangeroustosomepeoplE.EachyearhugeduststormsformintheSaharaandSaheldesertsofnorthernAfricA.WindscarrythedustacrosstheAtlanticOcean.ThemovementofdustacrosstheAtlanticOceanhasbeenincreasinginrecentyearsbecauseoflongerperiodswithoutraininAfricA.FromFebruarytoAprilthedustsettlesinSouthAmericA.FromJunetoOctoberthewindschangeandtransportthedusttoNorthAmericaCentralAmericaandtheCaribbean加勒比海地区.Thedustcloudstravelseveralthousandmetersabovesealevel.IttakesfivetosevendaysforthedusttocrosstheAtlanticOcean.Researchershavelongknownthatthedustcloudscouldtravellongdistances.Buttheythoughtfewmicroorganismscouldsurvivethetripbecauseofdamagingultravioletradiation紫外线fromthesun.Researchersnowbelievethatthedustcloudsblockenoughofthelighttoprotectvirusesbacteriaandfungiinthedust.ResearcherssaythesemicroorganismsmaybeahealthrisktosomepeoplE.AbouthalfthebacteriaandfungithatsurvivethetripfromAfricaareknowntocausediseaseinpeopleorplants.MorethanhalfofthedustthatreachestheUnitedStatessettlesinthestateofFlorida.FormanyyearsithascausedtheskiestheretoturnreD.NowresearcherssaytheremaybealinkbetweentheduststormsandincreasedhealthrisksinFlorida.TheybelievethedustcauseshigherratesofasthmaallergiesandotherbreathingproblemsinpeopletherE.ThedustalsohasbeenlinkedtoalargeincreaseinlungproblemsinatleastoneCaribbeannation.58.WhichstatementaboutAfricanduststormsisTRUE?A.TheyforminthenorthofAfricaandmoveeastwards.B.TheyforminthenorthofAfricaandmovewestwards.C.TheysettleinSouthAfricafromFebruarytoApril.D.IttakesoveraweekforthemtocrosstheAtlanticOcean.59.TheworstthingaboutAfricanduststormis______.A.theheattheygiveoffB.thedistancetheycoverC.themicroorganismstheycontainD.thetimetheylast60.WhichisNOTtheeffectofthedustinFlorida?A.FormanyyearstheskythereturnsreD.B.HealthrisksincreasetherE.C.TheratesofbreathingproblemsishighertherE.D.HalfthebacteriaandfungisurvivedtherE.
TreatwithRespectThespeedwithwhichManischangingthefaceofEarthhasoutstripped超过allthemightyprocessesofnatureputtogether.InhishastetosupplyhimselfwithincreasingquantitiesofEarth’streasuresherisksdestroyingonehegreatlyneedshisnaturalsurroundings.Somecountriessetasideunspoiledareasofnaturalbeauty.Canadahasthelargestsystemofnationalparksintheworld29inallcoveringabout13millionhectarespreservingthedifferentlandscapesandtheplantandanimallifE.Othercountriesarerestoringareaswhichhavebeenreducedtowastelandbymining.AtBrokenHillinAustraliadriftingsandfromrockcrushingturnedtheareaintoadesertsweptbysandstorms.Thisisnowbeingirrigatedfertilizedandplantedwithgrassandtrees.InGreatBritainquarriesandgravelpits深坑arebeingfilledinormadeintolakesindustrialwastelandisbeingturnedintoplayingfieldsandwastetipsintoslopinggreenhills.HoweverMantriestolookafterEarththefactisthatheisusingupatagreatrateresourcesespeciallyfuelresourceswhichhavetakenmillionsofyearstoaccumulateandwhichhecannotrenew.YeteverydaytheEarthreceivesahugesupplyofenergyfromtheSun.Manhasmadeseveralexperimentsinusingsolarenergytoheatfurnaces熔炉cookersandwater-distillers.InspacetechnologyE.g.onsatellitessolarcellsconvert使转变sunlightintoelectricity.Housesandofficeshavebeendesignedwhicharecentrallyheatedbywaterorairheatedbythesunlight.WhenMancantrapandstorethisenergysothathecanuseitexactlyasheneedsithewillhavenotonlyanendlesssupplybutacleanandsafeonE.60.Themainideaofthesecondparagraphis________.A.Manyareasthroughouttheworldhavebeentransformedintowastelandbymining.B.AustraliaandGreatBritainaretheonlytwocountriesthatarechangingthefaceoftheEarth.C.SomecountriesaretakingeffectivemeasurestomakeuseofthewastelandandtobeautifytheEarth.D.Developingcountriesshouldlearnfromdevelopedcountriestolookafterournaturalsurroundings.61.Accordingtothisselectedpassagewhichenergyisconsideredtobeendlesscleanandsafe?A.Energyfromlakewaters.B.EnergyfromfuelresourceswhichhavetakenmillionsofyearstoaccumulatE.C.Energyfromforests.D.EnergyfromtheSun.62.Whichcountryhasthelargestscaleofnatureprotectionaccordingtothispassage?A.GreatBritainB.AustraliaC.theU.S.A.D.Canada63.Whichofthefollowingstatementsdoyouthinkistrueafterreadingthepassage?A.Manisdestroyingthenaturalsurroundingsonpurposebecausethesurroundingscannotmakethemsatisfiedtogetenoughtreasures.B.Allthewastelandthroughouttheworldisnowbeingirrigatedfertilizedandplantedwithgrassandtrees.C.Wherethereisadeserttherecanbesandstorms.D.EnergyfromwatersforestsfuelresourcesandthesuntakesmillionsofyearstoaccumulatE.
Doyouwanttoliveanother100yearsormore?Someexpertssaythatscientificadvanceswillonedayenablehumanstolasttensofyearsbeyondwhatisnowseenasthenaturallimitofthehumanlifespan.Ithinkweareknockingatthedoorofimmortality永生saidMichaelZeyaMontclairStateUniversitybusinessprofessorandauthoroftwobooksonthefuturE.Ithinkby2075wewillseeitandthat’saconservativeestimatE.AttheconferenceinSanFranciscoDonaldLouriaaprofessoratNewJerseyMedicalSchoolinNewarksaidadvancesinusinggenesaswellasnanotechnology纳米技术makeitlikelythathumanswillliveinthefuturebeyondwhathasbeenpossibleinthepast.Thereisagreatpushsothatpeoplecanlivefrom120to180yearshesaiD.Somehavesuggestedthatthereisnolimitandthatpeoplecouldliveto200or300or500years.Howevermanyscientistswhospecializeinagingaredoubtfulaboutitandsaythehumanbodyisjustnotdesignedtolastabout120years.Evenwithhealthierlifestylesandlessdiseasetheysayfailureofthebrainandorganswillfinallyleadallhumanstodeath.ScientistsalsodifferonwhatkindoflifethesuperagedmightlivE.Itremainstobeseenifyoupass120youknow;couldyoubehealthyenoughtohavegoodqualityoflife?saidLeonardPoondirectoroftheUniversityofGeorgiaGerontologyCenter.Atpresentpeoplewhocouldgettothatpointarenotingoodhealthatall.73.BysayingweareknockingatthedoorimmortalityMichaelZeymeans_____.A.theybelievethatthereisnolimitoflivingB.theyaresuretofindthetruthaboutlonglivingC.theyhavegotsomeideasaboutlivingforeverD.theyareabletomakepeoplelivepastthepresentlifespan74.DonaldLouria’sattitudetowardlonglivingisthat_____.A.peoplecanlivefrom120to180B.itisstilldoubtfulhowlonghumanscanliveC.thehumanbodyisdesignedtolastabout120yearsD.itispossibleforhumanstolivelongerinthefuture75.TheunderlineditParA.4refersto_____.A.agreatpushB.theideaoflivingbeyondthepresentlifespanC.theideaoflivingfrom200to300D.theconservativeestimate76.Whatwouldbethebesttitleforthistext?A.LivinglongerornotB.SciencetechnologyandlonglivingC.NolimitforhumanlifeD.Healthylifestyleandlongliving
InthesecondhalfofeachyearmanypowerfulstormsareborninthetropicalAtlanticandCaribbeanseas.Oftheseonlyaboutahalfadozengenerate产生thestrongcirclingwindsof75milesperhourormorethatgivethemhurricanestatus状况andseveralusuallymaketheirwaytothecoast.TheretheycausemillionsofdollarsofdamageandbringdeathtolargenumbersofpeoplE.Thegreatstormsthathitthecoaststartasinnocent无害的circlingdisturbances搅动hundreds---eventhousands---ofmilesouttoseA.Astheytravelaimlesslyoverwaterwarmedbythesummersuntheyarecarriedwestwardbythetradewinds.Whenconditionsarejustrightwarmmoistairflowsinatthebottomofsuchadisturbancemovesupwardthroughitandcomesoutatthetop.Intheprocessthemoistureinthiswarmairproducesrainandwithittheheatthatisconverted变换toenergyintheformofstrongwinds.Astheheatincreasestheyounghurricanebeginstoswirl漩涡inacounter-clockwise逆时针方向motion.TheaveragelifeofahurricaneisonlyaboutninedaysbutitcontainsalmostmorepowerthanwecanimaginE.Theenergyintheheatreleasedbyahurricane’srainfallinasingledaywouldsatisfytheentireelectricalneedsoftheUnitedStatesformorethansixmonths.Waternotthewindisthemainsourceofdeathanddestruction毁灭inahurricanE.A.typicalhurricanebrings6-to12-inchdownpoursresultinginsuddenfloods.Worstofallisthepowerfulmovementofthesea-themountainsofwatermovingtowardthelow-pressurehurricanecenter.Thewaterlevelrisesasmuchas15feetabovenormalasitmovestowardshorE.44.Whenisanordinarytropicalstormcalledahurricane?A.WhenitbeginsintheAtlanticandCaribbeanseasB.WhenithitsthecoastlineC.Whenitismorethan75mileswideD.Whenitswindsreach75milesperhour45Whatistheworstthingabouthurricanes?A.thedestructiveeffectsofwaterB.theheattheyreleaseC.thattheylastaboutninedaysontheaverageD.theirstrongwinds46Thecounter-clockwiseswirlingofthehurricaneisbroughtaboutby_____.A.thelow-pressureareainthecenterofthestormB.theforceofwavesofwaterC.thetradewindsD.theincreasingheat47.Apparentlytheworddownpourmeans_______.A.heavyrainfallB.dangerouswavesC.theprocessofwatertothehurricanecenterD.theenergyproducedbythehurricane
TOKYOJapanAPJapanisveryseriousaboutrobotics机器人技术.IfthedroidsaregoingtofitintheyprobablyneedtolearntheJapanesecustomofservingteA.FortunatelyresearchersattheUniversityofTokyoareexploringjustthat.Inashowthisweekahumanoid有人特点的withcameraeyesmadebyKawadaIndustriesInC.pouredteafromabottleintoacup.Thenanotherrobotonwheelsdeliveredthecupofteainanexperimentalroomthathassensorsembeddedinthefloorandsofaaswellascamerasontheceilingtosimulate模仿lifewithrobottechnology.Ahumanbeingmaybefasterbutyou’dhavetosay‘Thankyou’saidUniversityofTokyoprofessorTomomasaSato.That’sthebestpartaboutarobot.Youdon’thavetofeelbadaboutaskingittodothings.SatobelievesJapanarapidlyagingsocietywheremorethanafifthofthepopulationis65orolderwillleadtheworldindesigningrobotstocarefortheelderlysickandbedridden卧床不起的.AlreadymonitoringtechnologiessuchassensorsthatautomaticallyturnonlightswhenpeopleenteraroomarebecomingwidespreadinJapan.ThewalkingchildsizeAsimofromHondaMotorCo.greetspeopleatshowrooms.NECCorp.hasdevelopedasmallercompanionrobotonwheelscalledPapero.A.sealrobotavailablesince2004canentertaintheelderlyandothersinneedoffuzzycompanionship.Satosayshisexperimentalroomisraisingawarenessaboutprivacyquestionsthatmayarisewhenelectronicdevices设备monitoraperson’smovementsdowntothesmallestdetail.Onthebrightsidetheteapouringhumanoidhasbeenprogrammedtodothedishes.51.Whatisthebesttitleofthispassage?A.ThankYouWillNeverBeNeededinJapanB.MonitoringTechnologiesAreWidespreadinJapanC.RobotIsDesignedtoCarefortheElderly.D.RobottechnologiesarewidespreadinJapanesedailylifE.52.Theunderlinedwordembeddedinthefirstparagraphprobablymeans.A.fixedB.establishedC.settledD.rooted53.AccordingtoProfessorSato.A.therobotservesteamuchfasterthanahumanbeingB.therobotdoesanythinglikehumanbeingsC.teaservingrobothelpstoformlazinessoftheagingsocietyD.teaservingrobotdoesn’tneedanyrewardfortheservice54.WhichofthefollowingstatementsisNOTtrue?A.A.robotcanimitatepeopletocompletecomplicatedtasksB.A.robothasbeenprogrammedtocleanthedishesC.Alltheproblemsintheagingsocietycanbesolvedbyrobots.D.ThenumberofagingpeopleisincreasingrapidlyinJapan.55.Wecaninferfromthepassagethat.A.peopleareafraidofbeingmonitoredbyrobots.B.thetechnologyofrobotshasbeenhighlightedinJapan.C.robotscancompletelytaketheplaceofhumanbeings.D.people’sprivacyshouldbestrictlyprotected
Onethingthetourbooksdon’ttellyouaboutLondonisthat2000ofitsresidentsarefoxes.Theyranawayfromthecityabouttwocenturiesagoafterdevelopersandpollutionmovedin.ButnowthattheenvironmentisclearthefoxeshavecomehomE.ThenumberandvarietyofwildanimalsinurbanareasisincreasingsaysComerJones.A.surveyofthewildlifeinNewYork’sCentralParklastyearcounted14speciesofmammals.A.similarsurveyconductedinthe1890scountedonlyfivespecies.Severalchangeshavebroughtwildanimalstothecities.Foremostisthatairandwaterqualityinmanycitieshasimprovedasaresultofthe1970spollution-controlefforts.Meanwhileruralareashavebeenbuiltupleavingmanyanimalsontheedgesofsuburbs.Inadditionurbanwildliferefuges避难处havebeencreateD.TheGreaterLondonCouncillastyearspent￡750000tobuylandandbuild10permanentwildliferefugesinthecity.Asaresultmanybirdsarenowlivinginthecity.Forperegrinefalconscitiesareactuallysaferthanruralcliffdwellings悬崖栖息地.By1970thebirdshaddiedouteastoftheMississippibecauseoftheDDThadmadetheireggstoothintosupportlifE.ThatyearscientistTomCadeofCornellUniversitybeganraisingthebirdsforreleaseincitiesaffordedplentyoffooD.Citiescanattractwildanimalswithoutturningthemharmful.Thetrickistocreatehabitatswheretheycanbeself-sufficientbutstillbeseenandappreciateD.Suchhabitatscanevenbefunctional.InSanFranciscothelocalgovernmentistestingdifferentkindsofrainwatercontrolbasinstoseenotonlywhishonesretain保持thecleanestwaterbutwhichwillattractthemostbirds.59.Thepassageismainlyconcernedwith_____.A.wildlifereturningtolargecitiesB.foxesreturningtoLondonC.wildanimalslivinginzoosD.asurveyofwildlifeinNewYork60.ItcanbeinferredfromthepassagethatA.LondonersareputtingmoreandmorewildanimalsintotheirzoosB.LondonersarehappytoseewildanimalsreturntotheircityC.LondonersaretryingtomovewildanimalsbacktothecountrysideD.Londonershavewelcomedthewildbirdsbutfoundfoxesaproblem61.AccordingtothepassagethenumberofspeciesofwildlifeinNewYork'sCentralPark.A.isslowlydecreasingB.competesfavorablywithothercitiesC.isonthesamelevelasbeforeD.hasmorethandoubledinthelastcentury62.WhichofthefollowingisNOTareasonthatwildlifereturningtothecities?A.Foodisplentifulinthecities.B.Wildlifeisappreciatedinthecities.C.Wildliferefugeshavebeenbuiltinthecities.D.Airandwaterqualityhasimprovedinthecities.
LONDON-ThetinydistantandfrozenplanetPlutofor30yearsbelievedtohavejustonemoonhassuddenlybeenfoundtohavetwomoresatellites.Onlydiscoveredin1930becauseofitsvastdistancefromEarthPlutohasremainedalargelymysteriousobjecteversincE.SomethreebillionmilesfromtheSunPlutoadwarfplanetremainstobevisitedbyaspacecraft.ItsfirstknownsatelliteiscalledCharon.Withadiameterof1200kmitishalfthatofPluto-unusuallylargeforamooninrelationtoitsprimary.ButnowusingimagesfromtheHubbleSpaceTelescopescientistsfromJohnsHopkinsUniversitySouthwestResearchInstituteandtheMassachusettsinstituteofTechnologysaytheyhavefoundtwomoretinyorbitingsatellitesP1andP2.BotharetravelingoutsidetheorbitofCharonandaretinybycomparisonthescientistswroteinthejournalNature.P1themoredistantofthetwofromPlutohasadiameterofbetween60and165kmwhileP2is20percentsmaller.AlthoughdefinitiveorbitscannotbeobtainedbothnewsatellitesappeartobemovingincircularorbitsinthesameorbitalplaneasCharonwithorbitalperiodsofabout38daysforP1and25daysforP2theywrote.ThediscoveryofthetwonewmembersofP1uto’sfamilymakesittheonlyobjectintheKuiperbelt―avastregionofrockandicebeyondNeptunewhichcontainsdebrisfromtheformationofthesolarsystem―knowntohavemultiplesatellitesthescientistssaid.72.Itisimpliedinthepassagethat.A.Charonwasnotdiscovereduntilthelate1960s.B.CharonisthelargestsatelliteinthesolarsystemC.alltheinnerplanetsarebetterobservedthanPlutoD.Plutomayhavesomemoremoonstobediscovered73.TheunderlinedwordprimaryinParagraph4refersto.A.sizeB.shapeC.planetD.Earth74.WhichofthefollowingshowthepossibleorbitsandpositionsofPluto’ssatellites?75.Whichofthefollowingisthebesttitleforthepassage?A.Pluto:furthestinthesolarsystem.B.Pluto:twoadditionalmoonsfound.C.Pluto:tinydistantandfrozenplanet.D.Pluto:twosatellitesformedin30years.
Sincethebeginningoftimemanhasbeeninterestedinthemoon.TheRomansdesignedaspecialdaytoshowadmirationandrespecttothemoon.TheycalleditMoondayorMondayasweknowittoday.LaterthegreatmindofLeonardodaVincistudiedthemoonanddesignedamachinetocarryahumantothemoon.Leonardosaidthatonedayagreatmachinebirdwouldtakeapersontothemoonandbringgreathonourtothehomewhereitwasborn.FourandahalfcenturieslaterLeonardo’sideawasrealizeD.ApolloIItookthreeAmericans―CollinsAldrinandArmstrong―tothemoon.Themission任务didfillthewholeworldwithgreatsurpriseasLeonardohadsaiditwoulD.A.lotofessaysarticlesandbookswerewrittenaboutman’sfirstmoonmission.Butperhapsthemostinterestingstorywasonewrittenbeforetheevent――over100yearsbeforE.In1865FrenchauthorJulesVernewroteastoryaboutthefirstjourneytothemoon.Hisstorywasverysimilartothe1969ApolloIImission.Verne’sspacecraftalsocontainedthreemen―twoAmericansandaFrenchman.ThespacecraftwasdescribedasbeingalmostthesamesizeasApolloII.ThelaunchsiteinVerne’sstorywasalsoinFlorida.ThespacecraftinVerne’sstorywasnamedtheColumbiad.TheApolloIIcommandshipwascalledColumbia.HisaccountofsendingthespacecraftintothespacecouldeasilyhavebeenwrittenabouthowApolloIIwassentintothespacE.Verne’sstorywasthesameastheactualeventinseveralotherrespects.ThespeedofVerne’sspacecraftwas36000feetpersecond;Apollo’swas35533feetperseconD.Verne’sspacecrafttook97hourstoreachthemoon;Apollo’stimewas103hours.LikeApollo’sspacemenVerne’sspacementookpicturesofthemoon’ssurfacerelaxedontheirseatscookedwithgasandexperiencedweightlessness.TheytoocamedowninthePacificandwerepickedupbyanAmericanwarship.WhatwerethereasonsforJulesVerne’sextremeaccuracy准确性indescribinganevent100yearsormorebeforeitactuallyoccurred?Hebasedhiswritingsonthelawofphysicsandastronomy天文学.Nineteenth-centuryscienceandthevividVerne’simaginationgavepeopleanunbelievablyaccuratepreviewofoneofthegreatesteventsofthe20thcentury.66.LeonardodaVincisaidthatagreatmachinebirdwould________.A.bringgreathonortothemoonB.flytowardthesunC.exploretheheavensD.takepeopletothemoon67.JulesVernewrotehisstoryofaman’svisittothemoonabout________.A.100yearsbeforetheApolloIImissionB.10yearsbeforetheApolloIImissionC.fourandahalfcenturiesagoD.100yearsago68.Verne’sstoryisverysimilarto________.A.thefirstU.SspacemisisonB.theApolloIImissionC.LeonardodaVinci’sstoryD.alotofotherbooksonthesamesubject69.ThepassagesuggeststhatJulesVerne________.A.developedthelawsofphysicsB.basedhiswritingsontheworksofLeonardodaVinciC.wasveryluckyinwhathehaddescribedaboutthefutureD.knewagreatdealaboutthelawsofphysicsandastronomy70.Thepassagemainlydescribes________.A.therapidprogressofmankindB.Verne’saccuratepreviewofthefutureC.the1969ApolloIImoonmissionD.the19th-centuryscienceandtechnology
ScientistshavelongbelievedonewaytostoptheEarth’satmospherefromwarmingisbyplantingmoretrees.TheideaisthatmoretreestakeinorabsorbsomeofthecarbondioxideintheatmospherE.Carbondioxideisagasreleasedbycarsfactoriesandotherhumanactivities.ThegastrapsheatintheEarth’satmospherewhichwarmstheplanet.Howevertwonewstudieshavefoundthattreesmaynotbeashelpfulinreducingcarbondioxideashadbeenthought.ThefirststudywasdoneatDukeUniversityinDurhamNorthCarolina.Researcherspumpedextracarbondioxideintoatestareawherepinetreesweregrowing.Thetreesgrewthirty-fourpercentfasterduringthefirstthreeyears.HoweverintimethetreesslowedtoabouttheirnormalgrowthratE.Thescientistssaythisisbecausetreesneedothernutrientssuchasnitrogen.InthesecondstudyresearchersfromDukeandBowdoinCollegeinBrunswickMaineexaminedthesoilaroundtrees.Theydiscoveredthatastheleavesbrokedownintothesoilallthecarbonwasnottrappedinthesoil.MuchofitwasreleasedintotheatmosphereascarbondioxidE.Forestplantinghasbeenapartofnegotiationsonaworldagreementtoreducegreenhousegasesthatscientistsbelievecauseglobalwarming.TheUnitedStatesCanadaJapanandsomeotherindustrialcountrieshavesupportedtheideA.Butthisnewresearchsuggeststheideaisnotaseffectiveasenvironmentalactivistshadthought.ScientistRamOrenofDukeUniversityledthestudyontreegrowth.Hesaysthatearlierestimatesontheabilityofforeststoabsorbcarbondioxidewereoverlyhopeful.SomescientistsnotinvolvedinthestudiessaytheresearchprovidessomeofthefirstevidenceonhowtreesreacttocarbondioxidE.Otherscientistssaytheresearchdisputes对质疑abeliefamongsomecoalandpowercompanies.Thecompaniessaythatrisinglevelsofcarbondioxideintheatmospherewillnotcreateharmfulglobalwarming.Insteadtheysayitwillincreaseforestsandotherplants.56.WhatisthepurposeofthispassageA.IntroducesomenewopinionsabouttherelationshipbetweentreesandcarbondioxidE.B.Introducerecentconditionofglobalindustrialpollution.C.Callonpeopletoplantmoretreestoreducegreenhousegases.D.PointoutthatpowercompaniesshouldberesponsiblefortherisinglevelsofcarbondioxidE.57.WhydidtheresearchersdotheTWOstudies?A.Toprovethattreesmaynotbeashelpfulinreducingcarbondioxideashadbeenthought.B.Togetmoreoxygenfromthesetrees.C.ToevaluatethemaximumcarbondioxidethetreescanabsorbD.Toseethegrowthrateofthesetrees.58.WhathappenedtotheleavesfallingfromthetreesinthesecondstudyA.Theybrokedownandthemainpartsturnedintooxygen.B.TheybrokedownandthecarboncontenthadmainlyturnedintocarbondioxidE.C.Theybrokedownandthecarbondioxidecontentwasmainlyabsorbedinthesoil.D.TheyabsorbedmorecarbondioxidE.59.Theworditinthelastparagraphprobablyrefersto.A.carbondioxideB.nitrogenC.atmosphereD.coal
Manyanimalandplantspecieshavebecomeextinct灭绝的andmanymoreareincriticaldanger.Findingwaystoprotecttheearth'swildlifeandconserve保护thenaturalworldtheyinhabit居住isnowmoreimportantthanever.DodoTheDodoisaclassicexampleofhowhumancauseddamagetotheearth'sbiology.TheflightlessDodowasnativetotheIslandofMauritiusintheIndianOcean.Itlivedofffruitfallenfromtheisland'streesandlivedunthreateneduntilhumansarrivedin1505.Theeasilycontrolledbirdbecameasourceoffoodforsailorsandwasattackedbyanimalsintroducedtotheislandbyhumanssuchaspigsmonkeysandrats.ThepopulationofDodosrapidlydecreasedandlastonewaskilledin1681.RhinosTheRhino犀牛hornisahighlypriceditemforAsianmedicinE.Thishasledtotheanimalbeinghuntedinitsnaturalhabitat.OncewidespreadinAfricaandEurasiamostrhinosnowliveinprotectednaturalparksandreserves保护区.Theirnumbershaverapidlydecreasedinthelast50yearsandtheanimalsremainunderconstantthreatfrompoachers偷猎者.TheGiantPandaThefutureoftheWorldWildlifeFund'ssymbolisfarfromcertain.Asfewas1000remaininthewild.TheChinesegovernmenthassetup33pandareservestoprotectthesebeautifulanimalsandmadepoachingthempunishablewith20yearsinprison.HoweverThepanda'sdistinctblackandwhitepatchedcoatfetchesahighpriceontheblackmarketanddeterminedpoachersstillpose造成oneofthemostseriousthreatstotheanimalscontinuedexistencE.WhalesTheInternationalWhalingCommissionisfightingtoensurethesurvivalofthewhalespecies.Despitethefactthatone-thirdtheworld'soceanshavebeendeclaredwhalesanctuaries保护区7outof13whalespeciesremainendangered.Huntedfortheirrichsupplyofoiltheirnumbershavedecreasedtojust300.Collisions碰撞withshipspoisonouspollutionandbeingcaughtinfishingnetsareothermajorcausesofwhaledeaths.TigersThelast100yearshasseena95%reductioninthenumbersofremainingtigerstobetween5000and7000andtheBaliJavanandCaspiantigersarealreadyextinct.TheSouthChinatigerisprecariouslyclosetodisappearingwithonly20to30stillalivE.LiketheRhinohorntigers’bonesandorgansaresoughtafterfortraditionalChinesemedicines.Theseitemsaretradedillegallyalongwithtigerskins.56.Itimpliesthat_______.A.TheDodolackedtheabilitytoprotectitselffromotheranimalsB.SailorstotheIslandofMauritiuslivedmainlyontheDodoC.TheDodousedtobeastronganimalthatlikedfightingD.TheDodopigsmonkeysandratswerethenativestotheIslandofMauritius57.Whichgroupofthefollowinganimalshasalreadyceasedtoexistaccordingtothetext?A.TheDodoRhinoandGiantPanda.B.TheRhinoWhaleandSouthChinaTiger.C.TheRhinoPandaWhaleandTiger.D.TheDodoandtheBaliJavanandCaspiantigers.58.______canserveasacureforcertaindiseases.A.Thewhale’srichoilB.Thepanda'sblackandwhitepatchedcoatC.TheRhinohornandtigers’bonesandorgansD.TheDodo’sdeliciousmeat59.WhichofthefollowingstatementsisNOTtrue?A.ThenumberofSouthChinatigershasreachedcrisispoint.B.Manyanimalsarethreatenedwithextinctionasaresultofhumanactivity.C.Peoplehuntfortheendangeredanimalsforhighprofit.D.TheWhaleistherepresentingmarkfortheWorldWildlifeFund.60.Whatisthebesttitleforthepassage?A.Whatcausedtheanimalstogoextinct?B.AnimalConservationC.ExtinctAnimalsD.EndangeredAnimals
Aquarrelathomemayresultinyoufallingill.Don’tlaughit’struE.Familymattersincludinglivinghabitsandeventhewaywespeakhaveabigeffectonourhealthdoctorssay.WangXiaoyuaSenior2girlfromXichangSichuanProvincefainted晕倒inclasswhensheheardherclassmatesquarrelatthetopoftheirvoices.Quarrelsbetweenherparentsalsoputthegirlintoacoma.ItisbecausesheissufferingfromdepressioncausedbybadrelationsathomedoctorsexplaineD.Wedon’tgetsickorstaywellbyourselvessaysDrRobertFerrerfromtheUS.Ferrershowsthatfamilyforcesmayexplainuptoaquarterofhealthproblemsinhisrecentresearch.Thegenesyougetfromyourfamilymaycauseillness.IfoneofyourparentshasaheartattackyourriskofbeingaffectedmaydoublE.ButeffectsonhealtharenotonlywritteninourDNA.Unrelatedpeoplewholiveunderthesameroofalsogetsimilarproblems.Dietlifestyleandenvironmentaffectourhealthtoo.Ferrer’sresearchalsofoundthatifteenagersfeeltheyareignoredorunimportantathometheyaremorelikelytogetsick.Wemayneverfullyunderstandalltheeffectsthatfamilieshaveonourhealth.ButjustasindividualproblemscanhaveeffectsonothersasmallimprovementcanhavebigbenefitsFerrersaiD.56.WhichofthefollowingcanbestexplainwhyWangXiaoyufaintedinclass?A.Becauseherclassmatesoftenquarreledinclass.B.Becauseherparentsusedtoquarrel.C.Becauseofherdepressioncausedbybadfamilyrelations.D.Becauseherclassmatesshoutedloudlyather.57.AccordingtoDrFerrerwhichofthefollowingstatementsisTRUE?A.Wegetsickorstaywellbyourselves.B.Onlythegeneswegetfromourfamilyhaveabigeffectonourhealth.C.Ourhealthhasnothingtodowithdietlifestyleandenvironment.D.Teenagerswhoareignoredathomegetsickmoreeasilythanthosewhoarenot.58.TheunderlinedwordcomainParagraph2probablymeans________.A.embarrassmentB.faintC.tirednessD.sadness59.Thebesttitleforthispassageis________.A.Familyrelations.B.Thereasonswhywegetsick.C.Happyfamilymakesyouhealthy.D.A.researchaboutteenagers’health.
Membersofanelephantfamilymaybeoutofsightbuttheyarealwaysinthemindsoftheherd’smatriarchs象群的女家长researchershavefounD.Testshavefoundthatfemaleelephantsareabletorememberthewhereaboutsofatleast17familymemberssimultaneouslyandperhapsasmanyas30.Theywatchwhichoftheirrelationsareaheadofthemwhentheherdsearchesforfoodwhichofthemarelaggingbehindandwhicharetravelinginseparategroups.ProfessorRichardByrneoftheUniversityofStAndrewssaidthattheelephantsperformedagoodmemorybybeingabletorecallwhereeachoftheirrelativeswasinachangingenvironment.It’shardenoughforustowatchtwoorthreechildreninabusyshoppingcentrE.Imaginetryingtodoitwith30orsohesaiD.ResearcherstestedtheabilityofAfricanelephantstorememberwhereeachfamilymemberhadgotto.Elephantshavepooreyesightbutanexcellentsenseofsmellandareabletoidentify鉴别oneanotherfromtracesofurine尿onthegrounD.Totestthememoriesoftheelephantssamplesofurine-soakedearthwerecollectedbyresearchersandplacedinpositionswhereaherdwasabouttopass.Observationsshowedthattheanimalsexhibitedsurprisewhentheycoulddetecttheodorofafamilymembertheyknewwasbehindthem.InterestwasshownwhentheurinewasthatofacloserelativetravelinginthesamegrouporinaseparateherdbutsamplesleftbyunknownindividualswereignoreD.TheresearcherswhoreportedtheirfindingsinthejournalBiologyLettersconcluded:Itseemsthatfemaleelephantshaveageneralinterestinmonitoringfamilymemberswithwhomtheyaretraveling.Elephants’orderoftravelingoftenchangesandovertakingiscommonsuggestingthatelephantsmustfrequentlyupdatetheirexpectationofwhereothersareinrelationtothemselves.73.Accordingtothepassagefemaleelephants.A.areusuallystrongerthanmaleelephantsB.usuallystayathomewhilemaleelephantssearchforfoodC.canrememberwheretheirfamilymembersarewhiletravelingD.canrecognizetheodorofhumanbeings74.Thethirdparagraphisdevelopedby.A.spaceB.frequencyC.timeD.comparison75.Elephantsidentifytheirfamilymembersmainlybyusingtheir.A.eyesB.noseC.earsD.mouth76.What’stheresearchers’conclusionabouttheirfindings?A.Maleelephantshavenointerestinotherfamilymembers.B.AnelephantnevergoestosearchforfoodalonE.C.Elephantsdon’tstayinthesameorderwhiletravelingingroups.D.Elephants’abilitiestosurvivearebeyondourexpectations.
Afewweeksagoagroupofscientistsproducedareportaboutglobalwarmingandthenaturalworld.Theywantedtofindoutifglobalwarmingwasdangerousforplantsandanimals.Thescientistsweresurprisedbywhattheyfound.Theysaythatduringthenext50yearsabout25%oflandanimalsandplantswillbecomeextinct灭绝的.Morethan1millionplantandanimalspecieswillbecomeextinctby2050.TheheadoftheresearchteamChristThomaswhoisprofessorofconservationbiologyatLeedsUniversitysaidtheresultsoftheirresearchwerefrightening.Morethan10%ofallplantsandanimalswillbecomeextinct.Itistoolatetosavemanyplantsandanimalsbecauseofthegreenhousegasesthatarealreadyintheatmosphere.Butthescientistssayifwecontrolgreenhousegasesnowwecouldsavemanymoreplantsandanimalsfromextinction.Thescientistsstudiedsomeareasoftheworldwithaveryrichbiology.TheseareaswereEuropeAustraliaCentralandSouthAmericaandSouthAfrica.Theirstudiesshowedthatspecieslivinginmountainousareashadabetterchanceofsurvivalbecausetheycouldmoveuphilltogetcooler.Inflatareassuchasdesertsplantsandanimalswouldhavetomoveverylongdistancestogetcoolersotheyareingreaterdangerofextinction.Thescientistsfoundmanysurprisingthings.Forexampletheyfoundthathalfofthe24species物种ofbutterflytheystudiedinAustraliawouldsoonbecomeextinct.64.Accordingtothispassageglobalwarmingcouldbebestdescribedas________tomanyplantsandanimals.A.deadlyB.surprisingC.disappointingD.frightening65.What’sthepurposeoftheresearchledbyChristThomas?A.Toprotectanimalsandplantsfromglobalwarming.B.Tocallonpeopletocontrolgreenhousegases.C.Towarnusoftheextinctionofmanyanimalsandplants.D.Tostudytheeffectsofglobalwarmingonanimalsandplants.66.Whydidspecieslivinginmountainousareashaveabetterchanceofsurvival?A.Mountainshelpedkeepthemoutofmoreheating.B.Globalwarminghadnoeffectonmountainousareas.C.Therewerenogreenhousegasesinmountainousareas.D.Thereweremorewaterinmountainsthanindeserts.67.WhichofthefollowingisNOTtrue?A.Itiscertainthatmanyplantsandanimalswilldieout.B.HalfoftheAustralianbutterflieswoulddieout.C.Manymoreanimalsandplantsstillcanbesaved.D.Europeisoneareawhichhasaveryrichbiology.68.WhatcanbethebesttitleofthispassageA.GreenhouseeffectandglobalwarmingB.ExtinctanimalsintheworldC.AterrifyingdiscoveryconcerningglobalwarmingD.Disappearanceofbutterflies
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