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With only about 1, 000 pandas left in the world, China is desperately trying to clone the animal and...
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Highinthickbambooforestsinthemisty71rainmountainso
WemustpandasinChinabecausethereareonlyoverl000lef
Themoonis______awayfromtheearth.
about 384 000 kilometers
240 000 kilometers
only 348 000 kilometers
about 384 000 meters
—youpleasewritea3000wordreportaboutthissubjectform
Could;might
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Might;could
Would;could
Ioftengotothezooonweekends.ThereIcanseemyfavoritea
Thepandaisoneoftheanimalsmostindanger.Thereareabou
Let'ssavepandas!Thereonlyabout2000pandaslivinginth
Thegiantpandalovesbamboo.Anadultpandarequires12.5k
Let'ssavepandas!Thereareonlyabout2000pandasinthef
根据短文内容用方框中所给单词的适当形式填空每词限用一次whyanimaldangerlivelove
Shouldwesavepandas?Eventhoughthenumberofgiantpanda
从方框中选出适当的单词或短语填空使短文意思完整通顺每个选项只能使用一次每框有一项剩余第一框供1—5小
阅读短文然后从方框中选出可以填入文中空白处的单词nothingweakplaylovelyworse
Thepandaisoneoftheanimalsmostindanger.Thereareabou
OnMarch252013twopandaswereshippedfromChinatoCanadA
综合填空阅读下面短文根据短文内容用方框内所给词语的适当形式填空使短文在结构和意义上完整请你一定要注意
Giantpandaseatvegetableseventhoughtheirbodiesarebe
Whydopeoplelovepandassomuch?Perhapsitisbecausethey
Pandasare_____tothemountainsofcentralChinaandonlya
native
sensitive
relate
familiar
Thegiantpandalovesbamboo.Anadultpandarequires12.5k
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ThefirstMP4playerwasbornyearsago.Soonmanymusicfanswerewonderinghowfantasticitis!IfyouhavebeenintotechnologyenoughperhapsyoumayhaveaknowledgeoftheMP4.IfnotyoudoneedtoknowsomethingbeforebuyingoneevenifyouarefamiliarwithMP3.MP3istheCD-likediscwithgreatercapacity.HowaboutMP4?ThissmalldigitalproductwillreallyenrichthejoyfromlisteningtomusiC.Youcanevenfeelthetouchofmusictoyoursoul!NowsomesimilardigitalproductsadvertisedasMP4playersaresimplyMP3playerswhichdonotplayvideoandMPEGformat格式andalsolackotherparticularfunctions.TheseproductsconfusesomebuyersastheymaythinktheMP4playerssimplymeantheycandomorethanMP3.WhatisMP4?!Itisamultimediacontainer.Itisnotonlyusedtostoredigitalaudio音频anddigitalvideostreamsespeciallythoseofMPEGbutcanalsobeusedtostoreotherdatasuchassubtitles字幕andpictures.AsamostmoderncontainerformatitallowsstreamingovertheInternet.WiththehelpofapieceofMP4videoequipmentyoucanchangevariousprogramssuchasMPEGtoMP4ASXtoMP4AVItoMP4andsoonwhichcanbedoneveryquicklyandeasilywithoutanyeffectonthesoundquality.Byinstalling安装DVD-MP4softwareyoucantransferparticularmusicfromaDVDtoanMP4videofilE.ItreallyexcitesyourlisteningmusicexperiencE.ThenthereisMP4advancedandyoucansetyourowncollectionofalltheprograms―TVshowsgamesandmusiC.Youcanevenseemovieswhicharestillrunningincinemas.Whatelsedigitalproductcouldyoupossiblyaskfor?57.Itissuggestedherethatyoushould________beforebuyinganMP4playerA.firstbeamusicfanB.haveaknowledgeofMP4C.getfamiliarwithMP3D.buyaCD-likedisc58.FromthepassagewecanseethatMP4is________MP3.A.muchbiggerthanB.justasadvancedasC.notsoparticularasD.morefunctionalthan59.WhichfunctionofMP4isNOTdirectlymentionedinthispassage?A.Storingdigitalaudioandvideostreams.B.Recordingsomemoviesincinemas.C.PlayingTVshowsgamesandmovies.D.TransferringparticularmusicfromaDVD.60.Fromthelastsentenceit’sclearthatthewritertriestotellusitis_______.A.reasonabletobuyotherdigitalproductsB.impossibletobuysomethingelseC.averywisechoicetobuyanMP4D.anexcitingexperiencetobuyanMP3
NOTallmemoriesaresweet.Somepeoplespendalltheirlivestryingtoforgetbadexperiences.Violenceandtrafficaccidentscanleavepeoplewithterriblephysicalandemotionalscars.Oftentheyrelivetheseexperiencesinnightmares.NowAmericanresearchersthinktheyareclosetodevelopingapillwhichwillhelppeopleforgetbadmemories.ThepillisdesignedtobetakenimmediatelyafterafrighteningexperiencE.Theyhopeitmightreduceorpossiblyerase抹去theeffectofpainfulmemories.InNovemberexpertstestedadrugonpeopleintheUSandFrance.Thedrugstopsthebodyreleasingchemicalsthatfixmemoriesinthebrain.SofartheresearchhassuggestedthatonlytheemotionaleffectsofmemoriesmaybereducednotthatthememoriesareeraseD.Theresearchhascausedagreatdealofargument.Somethinkitisabadideawhileotherssupportit.Supporterssayitcouldleadtopillsthatpreventortreatsoldiers’troublingmemoriesafterwar.Theysaythattherearemanypeoplewhosufferfromterriblememories.Somememoriescanruinpeople’slives.Theycomebacktoyouwhenyoudon’twanttohavetheminadaydreamornightmarE.TheyusuallycomewithverypainfulemotionssaidRogerPitmanaprofessorofpsychiatryatHarvardMedicalSchool.:Thiscouldrelievealotofthatsuffering.Butthosewhoareagainsttheresearchsaythatchangingmemoriesisverydangerousbecausememoriesgiveusouridentity特质.Theyalsohelpusallavoidthemistakesofthepast.AllofuscanthinkofbadeventsinourlivesthatwerehorribleatthetimebutmakeuswhowearE.I’mnotsurewewanttowipethosememoriesoutsaidRebeccaDresseramedicalethicist53.Thepassageismainlyabout.A.anewmedicalinventionB.anewresearchonthepillC.awayoferasingpainfulmemoriesD.anargumentabouttheresearchonthepill54.Thedrugtestedonpeoplecan.A.causethebraintofixmemoriesB.stoppeoplerememberingbadexperiencesC.preventbodyproducingcertainchemicalsD.wipeouttheemotionaleffectsofmemories55.Wecaninferfromthepassagethat.A.peopledoubttheeffectsofthepillsB.thepillwillstoppeople’sbadexperiencesC.takingthepillwilldoharmtopeople’shealthD.thepillhasprobablybeenproducedinAmerica56.WhichofthefollowingdoesRebeccaDresseragreewith?A.Somememoriescanruinpeople’slives.B.Peoplewanttogetridofbadmemories.C.Experiencingbadeventsmakesusdifferentfromothers.D.Thepillwillreducepeople’ssufferingsfrombadmemories.
Manykidsturnuptheirnosesatthethoughtofeatingfishbecausewellitcansmellfishy.Whileitisusuallyahealthysourceofproteininthediettheremaybeseveralreasonstoavoidbitingintoaforkfuloffish.Beforeyoubreakoutthetartarsaucelearnsomefactsaboutfishtokeepyourselfandtheenvironmenthealthy.Somefishmaycontainharmfulchemicalswhichcanbetheresultofbothnaturalcausesandwaterpollution.MercuryisapoisonouschemicalwhichoccursnaturallyinoceansandtheEarth’scrustbutalsocomesfromman-madesourcessuchaspesticidesburninggarbageandthereleasingoffossilfuels.PolychlorinatedbiphenylsPCBsagroupofchemicalscanalsobefoundinsomefish.Thesedangerousman-madechemicalswereusedinmanyindustriesuntil1977whentheywerebanneD.PCBswerereleasedorleakedintotheairandwaterandhavebeentransportedaroundtheglobE.HowdomercuryandPCBsendupinfishandthefoodsupply?Whentheyarereleasedintotheairtheyattachthemselvestoparticles.Theseparticlessettleonthegroundandinthewaterandareeventuallyeatenbymicroscopicorganisms.Smallfisheatthemicro-organismsandlargefisheatthesmallfishandonupthefoodchain.BecausetheycannegativelyaffectyourhealththeU.S.EnvironmentalProtectionAgencyadvisesthatkidsyoungerthan15yearsoldavoidfishthatcontainhighlevelsofmercuryandPCBs.Theseincludesharkswordfishkingmackerelandtilefish.Therearealsomanytypesoffishthataregoodforyoubutbecauseofoverfishingareindangerofbeingwipedout.SomearebeingfishedinthewildsomuchthattheycannotreproducefastenoughtosurvivE.Othersarebeingfarmedinwaysthatarenotenvironmentallyfriendly.ThesefishincluderedsnapperAtlanticsalmonblue-fintunaandkingcraB.DespitetheseproblemsthereareseveralfishthatarebothhealthyandsustainablesuchasAlaskansalmonAmericancatfishPacificcodandseveralfarm-raisedfishandshellfish.51.HowdomercuryandPCBscometoourfoodsupply?A.MercuryandPCBs--water--fish--particles--foodsupplyB.MercuryandPCBs--particles--organisms--fish--foodsupplyC.MercuryandPCBs--particles--fish--organisms--foodsupplyD.MercuryandPCBs―organisms--groundandwater--fish--foodsupply52.Theunderlinedwordtheyparagraph5refersto.A.fishB.particlesC.microscopicorganismsD.mercuryandPCBs53.Accordingtothepassagewhichgroupoffishcanbesafelyeatenbyyoungkids?A.Shellfish;tilefish;Alaskansalmon.B.Kingcrab;kingmackerel;PacificcoD.C.Pacificcod;Alaskansalmon;Americancatfish.D.Pacificcod;Atlanticsalmon;swordfish.54.Thewriterismostlikelytoagreethat.A.weshouldbecarefulwhendecidingwhatkindoffishtoeatB.overfishingisthemaincauseoffishpoisoningC.mosttypesoffishcanbesafelyraisedonfishfarmsD.thegovernmentshouldbanchildrenunder15fromeatingfish55.Itcanbeinferredfromthepassagethat.A.childrenlikeeatingfishbecauseitsmellsfishyB.ifyouwanttobemoreenvironmentallyfriendlyeatlessfishC.PCBswerenotallowedtobeusedinfoodindustrybefore1977D.adultsmightbelessaffectedbyhighchemicallevelsinfish
ScientistsbelievethatconditionsonMarsaround3.8billionyearsagowereverysimilartothoseoftheearlyearthwhenprimitiveorganismswerespreadingthroughouroceans.AtthattimeMarswouldhavebeenmuchwarmerandwetterthanitistodaywithanatmospherecomposedmainlyofcarbondioxidejustlikethatoftheearthatthetimE.UndertheseconditionsitishighlyprobablethatlifemayhavearisenonMarsaswell.ButeveniflifedidnotarisenaturallyonMarsitdoesnotmeanthatitcouldnothaveexistedtherE.AccordingtoProfessorPaulDaviesoftheUniversityofAdelaideAustralialifeformscouldhavebeentransferredbetweentheearthandMarsinwreckagebrokepiecescreatedbytheimpactofcomet彗星andsmallplanetsonthesurfaceofthetwoplanets.Eventodayabout500tonsofmaterialfromMarslandsoneartheveryyear.Itismainlyintheformofthedustbutoccasionallyalargerchunk厚片大块strikestheearth.In1911apieceofMartianrockcrashedinEgyptkillingadog.AccordingtoprofessorDaviesitisinthesechunksofrockwhichweremuchlargerandmorefrequentinthepastthatlifeformscouldhavebeentransportedfromplanettoplanet.Buthowcouldtheselifeformshavesurvivedtheirjourneythroughspace?SaysPaulDaviesThedifficultyinbelievingthistheoryisthatabacteriumonitsowninspacehastostruggleitselfnotonlyagainstcoldbutalsoagainstdeadlycosmic宇宙的radiation.Butwrappedinarockthesituationisdifferent.A.rocktenmetersacrosswouldshieldlifeinsideitfromalotofradiationandthetemperaturemightonlybeminus10or20degreesthesortofthingwehaveonearth.73.Wheredosomescientistssupposelifeprobablycomefrom?回答不超过6个单词74.WhatdoesProfessorPaulDaviesbelieve?回答不超过6个单词75.Whycouldlifesurvivewhentransferredfromoneplanettoanother?回答不超过12个单词
Astrongwindcanbeadangerousthing-sometimesitispowerfulenoughtoknockyouoffyourfeet.Buttoplantsthewindisasourceofnewlifecarryingthemortheirspores孢子thousandsofmiles.ANASAsatellitecalledQuikSCAThasdiscoveredhighwaysofwindovertheEarth'soceans.Scientistsbelievetheseinvisibleroadsmayexplainwhymanynonfloweringplantssuchasmosses苔藓andlichens地衣growwheretheydo.Thesatelliteisabletosendmicrowaves微波fromspacetothesurfaceoftheocean.Thepatternofsignalsthatcomebackshowswhichwaythewindsareblowing.Usingthisdatathescientistsstudiedagroupofislandsinthesouthernhemisphere半球nearAntarctica.Windstendtoblowanticlockwise逆时针inthisregionbuttherearelotsoflocaldifferences.Whentheresearcherscomparedtheselocalpatternstobotanical植物学datatheyfoundthatthewindhadanimportanteffectonwherespeciesofmosseslichensandothernonfloweringplantsgrow.ForexampleBouvetIslandandHeardIslandshare30percentoftheirmossspecies29percentofliverworts叶苔and32percentoflichens-eventhoughtheyare4430kilometersapart.IncontrastGoughIslandandBouvetIslandseparatedbyjust1860kilometersofseashareonly16percentofmossesand17percentofliverworts.Theyhavenolichensincommon.Ferns蕨类植物andfloweringplantsdon'ttravelaswellinthewindsotheydon'tshowthesamekindsofdistribution分布patterns.67.Thisstoryisabout.A.thediscoveryofwindhighwaysB.howwindtravelsC.howwindaffectsdifferentplantsD.oneofthewind68.Theunderlinedworddatainthefourthparagraphmeans.A.signalB.patternC.informationD.research69.WhichofthefollowingisWRONG?A.BouvetIslandHeardIslandandGoughIslandareallinthesouthernhemisphere.B.Windsintheresearchedareasblowanticlockwise.C.Thescientistsneedn'tbasethisresearchonhowwindsaffectwherefernsgrow.D.WithouttheQuikSCATtheresearchwouldn'thavemadesense.70.Whichofthefollowingdiagramsshowsthecorrectpositionoftheislands?
Thedaysofapain-freevisittothedentistmaynotbefaroff.ThisisthankstoalittleJapanesewomaninapinksweaternamedSimroiD.WithalimitedvocabularySimroidthe160cm-tallrobotishappytofeelyourpain.Simroidisdesignedtobeusedatmedicalcolleges.Shehasrealisticlookingskineyesandamouthfittedwithreplica仿制teeth.Herchestalsorisesandfallsasifsheisbreathing.Simroidreleasesaclearouch!wheneveratraineedentistpressesherteethtoohardwithatool.Andshegivesareassuringthat’sbetterwhenthedrillhitstherightplacE.WewanttousetherobotstotraindentiststoworryaboutwhetherpatientsarecomfortableandnotjustfocusonmedicaltechniquessaidNaotakeShubuiaprofessoratNipponDentalUniversityinJapanwhohelpeddevelopSimroiD.Therobotwasoneofhundredsofcutting-edgedevicesondisplayattheworld’sbiggestrobotexhibitionlastweekinJapan.Asscientistsimprovethedesignofrobotstheycouldsoonbeservingteatoofficeworkersordirectingshoppers.Today’srobotslookandactmuchlikethehumanswhoinventedthem.InJapanrobotscanalreadybefoundworkingashomehelpsofficereceptionistsandsecurityguardsaswellasonthefactoryfloor.Thereweremorethan370000industrialrobotsinuseinJapanin2005accordingtoareportbyMacquariebank40percentoftheworldtotalwith32robotsforevery1000workers.TheeconomyministrybelievesthattheJapaneserobotmarketwillbeworthmorethan$52billionby2025.Humanworkisbeinghelpedandevenreplacedbymechanicalefficiencyinalmosteveryareafromgolf-bagcarrierstopublictoiletcleaners.Butmanyscientistsbelievetheageoftheservicerobotisnotfaroff.Itwillarriveoncemachinesarecapableofconnectingwithhumansonanemotionallevel.JudgingbytheTokyoexhibitionthatprocesshasalreadybegun.56.Simroidisdesignedto_________.A.aiddentaltraineestofocusontheirmedicaltechniquesB.traindentiststobeabletosharepatients’feelingsC.helppatientsrelaxduringdentalsurgeryD.serveasthedentists’assistanceduringdentalsurgery57.WhichofthefollowingaboutSimroidisNOTtrueaccordingtothetext?A.SheisaroboticdentalpatientwitharealisticappearancE.B.Shewillletoutascreamwhenevershefeelsapain.C.Shecancommunicatealotwithdentists.D.Sheisabletoreactinahumanlikewaytomouthpain.58.Wecanlearnfromthetextthat________.A.robotsarewidelyusedinJapanB.JapanhastakentheleadindevelopingrobotsC.theJapaneserobotmarkethasgreatestpotentialintheworldD.theworld’sbiggestrobotexhibitionisheldinJapaneveryyear59.Thephrasethatprocessinthelastparagraphrefersto________.A.replacinghumanworkwithrobotsB.improvingmechanicalefficiencyC.enteringtheageoftheservicerobotD.producingarobotcapableofconnectingwithhumansonanemotionallevel
Doyouwanttoseetheeffectsofglobalwarming?Thenheadnorth.WillStegerisgoingtotakeallofusthere.Steger64thefirstpersontomakeadogsledtriptotheNoahPoleisaveryfamousandadmiredpolarexplorer.He'sathomeinfrozenpartsoftheworldwherefewhumanseverstepon.Stegerisalsoadevotedenvironmentalistwhowasearlytoringthealarmbellonglobalwarming.HesawitseffectsfirsthandinfrequentpolarexpeditionstotheArcticandAntarctica.Stegerisabouttoleadateamofsixyoungadventurersona1400-mile60-day-longdogsledtripacrossEllesmereIslandintheCanadianArctic.Theseaiceinthatregionshouldstillbefrozen.WewanttotakeouraudiencetothefrontlinesofglobalwarmingsaysSteger.Theteamwillbeuploadingvideosstoriesandphotostothewebsiteglobal-warming101.comastheymarchalongallowingarmchairadventurersandkidsinclassroomstofollowtheirprogressdaytoday.WecanactuallybringtheaudienceupthereStegersays.Stege'steamwillincludesomealready-famousyoungexplorers.SamBransonthe22-year-oldsonofBritishairlinetycoon大亨RichardBransonisanexperiencedArctictraveler.Alsoonthejourneywillbe27-year-oldNorwegianSigridEkran.LastyearEkranbecameonlythesecondwomaninhistorytowinRookie新秀oftheYearfortheIditarodSledDogRace.Whattheywillseemaybesurprising.EvenStegerdoesn'tknowexactlywhattoexpect.ClimatechangehasalreadyreshapedthegeographyoftheArctic.Withinadecadeorlessit'sgoingtobeimpossibletoreachtheNorthPolebydogteamwithoutflotation漂浮saysSteger.Climatechangeishappeningbutpeoplecanchangetoo.TheirwillingnesstochangewilldeterminetheshapeofEarth'sfuture.61.Stegeristhefollowingexcept.A.asixty-four-yearoldmanB.averyfamouspolarexplorerC.adevotedenvironmentalistD.afamousBritishairlinetycoon62.StegerisabouttoorganizetheadventuretotheArcticinorderto.A.letmorepeopleenjoyitsnaturalbeautyB.collectevidenceforhisscientificresearchC.letpeoplerealizethebadeffectsofglobalwarmingD.developtheyoungpeople'sadventurousandbravespirit63.HowcanpeoplelearnabouttheprogressofSteger'sjourney?.A.OntheInternetB.BywatchingTVC.ThroughradioprogramsD.Byreadingtheirjournals64.AccordingtoStegerpeoplecansavetheearthby.A.changingtheirharmfulwayoflifeB.learningmoreabouttheenvironmentC.willinglygivinguptheircomfortablelifeD.gettingusedtothepresentchangesoftheearth65.Thebesttitleforthispassagewouldbe一.A.TheArcticIsInDangerB.DiscoveriesoftheArcticC.SleddingThroughtheArcticD.ConsequencesofGlobalWarming
A.PopularityofScienceFictionB.A.FairlyNewDevelopmentC.ClassicsofScienceFictionD.DifficultyinKeepingaheadofScientificAdventureE.TheOriginofScienceFictionF.ThemesofModernScienceFiction80.Amongstthemostpopularbooksbeingwrittentodayarethosewhichareusuallyclassifiedassciencefiction.HundredsoftitlesarepublishedeveryyearandarereadbyallkindsofpeoplE.Furthermoresomeofthemostsuccessfulfilmsofrecentyearshavebeenbasedonsciencefictionstories.81.Itisoftenthoughtthatsciencefictionisafairlynewdevelopmentinliteraturebutitsancestorscanbefoundinbookswrittenhundredsofyearsago.Thesebookswereoftenconcernedwiththepresentationofsomeformofidealsocietyathemewhichisstilloftenfoundinmodernstories.82.Mostoftheclassicsofsciencefictionhoweverhavebeenwrittenwithinthelasthundredyears.BooksbywriterssuchasJulesVerneandH.G.Wellstomentionjusttwowell-knownauthorshavebeentranslatedintomanylanguages.83.Modernsciencefictionwritersdon'twriteaboutmenfromMarsorspaceadventurestories.Theyaremoreinterestedinpredictingtheresultsoftechnicaldevelopmentsonsocietyandthehumanmind;orinimaginingfutureworldswhichareareflectionoftheworldwhichweliveinnow.Becauseofthistheirwritinghasobviouspoliticalundertones.84.Inanagewheresciencefactfrequentlyovertakessciencefictionthewritersmayfinditdifficulttokeepaheadofscientificadvances.Thosewhoaresufficientlyclear-sightedtoseethewaywearegoinghowevermayprovideavaluablelessononhowtodealwiththeproblemswhichsocietywillinevitablyfaceasittriestomasteritsnewtechnology.
Formostofhistoryscientistsandmankindingeneralconsideredplantstobepassiveorganismsjustwithnoreasonormeansofcommunicatingwithoneanother.Butnewresearchhasrevealedthatmanyplantsactually‘chat’quiteabitovertheirownnetworkswhichmayalsoindicatethatyourauntisn’tquiteascrazyasyouthought.Youknowtheonethattalkstoherpetunias矮牵牛花andexpectsananswer.Infactmanyplantsforminternal内部的communicationnetworksandareabletoexchangeinformationefficiently.Theseconnectionsenabletheplantstoshareinformationviainternalchannelsinamannerverysimilartocomputernetworks.Sowhatkindofthingsdoplantstelleachother?ResearcherJosefStueferfoundthatonepurposeforplantshavingtheirownchatsystemsistowarneachother.Heandhiscolleagueswerethefirsttoprovethatclover三叶草plantsdoindeedwarneachotherviathesenetworklinksifenemiesarenearby.Forexampleifoneoftheplantsisattackedbycaterpillars毛虫itwillwarntheothermembersofthenetworkviaaninternalsignal.Afterreceivingawarningtheotherplantswillstrengthentheirprotectivechemicalandmechanicalresistancesothattheyarelessattractivetoadvancingcaterpillars.Thisearlywarningsystemallowstheplantstostayonestepaheadoftheirenemies.Experimentalresearchhasrevealedthatthiscommunicationsignificantlylimitsthedamagetotheplants.ItisalsoknownthatplantshavefamilyvalueswithnewresearchrevealingtheyhavetheabilitytorecognizecloserelativesinordertohelpeachothersurvivE.Researchfoundplantsfromthesamespeciesofbeach-dwellingwildflowersforexamplegrewaggressively侵略地alongsideunrelatedneighborsbutwerelesscompetitivewhentheysharedsoilwiththeirsiblings.Someresearchersthinkthatplantsmustcommunicatethroughtheirrootsidentifyingthemselvesusingtinychemicalsignaturesspecifictoeachplant’sfamily.Theresearchshowsthatourcurrentconceptofplantsisprobablyapoorreflectionofreality.Scientistsareeagertodiscoverinwhatwaysandtowhatextentplantscommunicatewitheachother.64.Yourauntismentionedinthefirstparagraphtoindicatethat______.A.plantsareveryimportanttopeopleB.plantshavetheabilitytocommunicateC.peoplecancommunicatewithplantsD.plantsareconsideredtobepassiveorganisms665.Wecaninferfromthepassagethatcloverplantsthatreceiveawarningprotectthemselvesagainstenemies______.A.byfightingenemiestogetherB.byhidingthemselvesfromenemiesC.byattackingenemieswithchemicalsD.bymakingthemselvestasteunpleasant66.TheunderlinedwordsiblingsinParagraph4refersto______.A.unrelatedneighborsB.familyvaluesC.closerelativesD.wildflowers67.Whichofthefollowingstatementsistrueaccordingtothepassage?A.Manyplantsareconnectedbyinternalchannels.B.Differentplantsformacommunicationnetwork.C.PlantstendtolookforinformationtheyneeD.D.Allplantsshareinformationwitheachother.68.Thebesttitleforthispassagemaybe______.A.ExistenceintheGreenKingdomB.CompetitionintheGreenKingdomC.CommunicationwithGreenPlantsD.CommunicationoftheGreenKingdom
Hightechandstateoftheartaretwoexpressionsthatdescribeverymoderntechnology.Hightechisjustashorterwayofsayinghightechnology.Andhightechnologydescribesanyinventionsystemordevicethatusesthenewestideasordiscoveriesofscienceandengineering.Whatishightech?A.computerishightech.SoisacommunicationsatellitE.A.modernmanufacturing制造业的systemissurelyhightech.HightechbecameapopularexpressionintheUnitedStatesduringtheearly1980’s.BecauseofimprovementsintechnologypeoplecouldbuymanynewkindsofproductsinAmericanstoressuchashomecomputersmicrowaveovens微波炉etC.StateoftheartissomethingthatisasmodernaspossiblE.Itisaproductthatisbasedontheverylatestmethodsandtechnology.Somethingthatisstateoftheartisthenewestpossibledesignorproductofabusinessorindustry.A.stateofthearttelevisionsetforexampleusesthemostmodernelectronicdesignandparts.Itisthebestthatonecanbuy.Stateoftheartisnotanewexpression.Engineershaveuseditforyearstodescribethebestandmostmodernwayofdoingsomething.MillionsofAmericansbegantousetheexpressioninthelate1970’s.Thereasonwasthecomputerrevolution.Everycomputercompanyclaimedthatitscomputerswerestateoftheart.Computertechnologychangessofastthatastateoftheartcomputertodaymightbeoldtomorrow.Theexpressionstateofthearthasbecomeascommonandpopularascomputersthemselves.Nowallkindsofproductsaresaidtobestateoftheart.72.Whatisthepurposeofthepassage?A.TotellhowhightechandstateofthearthavedevelopeD.B.Togiveexamplesofhightech.C.TotellwhathightechandstateoftheartarE.D.Todescribeverymoderntechnology.73.Whatcanweinfer推断fromthepassage?A.AmericanstorescouldprovidenewkindsofproductstothepeoplE.B.Hightechdescribesatechnologythatisnottraditional.C.Stateoftheartisnotaspopularashightech.D.Awoodenploughpulledbyoxenisstateoftheart.74.WhichofthefollowingstatementsisNOTtrue?A.Sincethecomputerrevolutiontheexpressionstateofthearthasbecomepopular.B.Stateoftheartmeanssomethingthatisthebestonecanbuy.C.WiththerapiddevelopmentofcomputertechnologyastateoftheartcomputermayeasilybecomeoutofdatE.D.Allkindsofproductsarestateoftheartnowadays.75.Thebesttitleforthepassageis________.A.ComputerTechnologyB.HighTechandStateoftheArtC.MostAdvancedTechnologyD.TwoNewExpressions
Brokenrubberbandsandflattiresrequiringreplacementcouldsoonbeathingofthepast.Frenchresearchershavedevelopedanewkindofrubberthatcanrepairitselfwhenbroken.Thenewrubberismadefromwidelyavailablematerialsincludingvegetableoilandacommonindustrialchemical.Allthematerialsareconsideredsafetotheenvironmentandcanbeeasilyreused.Thebestpartisthatthenewrubbercanberepairedandusedagainandagainwithoutlosingitsstrengthorabilityorstretch.Whencuttherubbercanbemadenewagainsimplybypressingthetwobrokenendsbacktogether.TheproductcanberepairedatroomtemperaturearoundtwentydegreesCentigradeotherself-healingmaterialsrequirehighertemperaturesforrepair.Traditionallyrubbersubstancesaremadefromhugemolecules分子connectedbystrongchemicallinksorbonds.Thenewrubberismadeofsmallermolecules.Themoleculesarelinkedtogetherusinghydrogenbonds.Whenconnectedinthiswaythemoleculesactlikeonelongmoleculeformingwhatiscalledsupramolecularnetworks超分子网.Whentherubberiscutthemoleculesattempttoconnectwithwhatevermoleculeisnearthem.Whenpressedtogetherthemoleculesareabletorepairthemselvesatthemolecularlevelmakingtherepairedrubberlikenew.Howevertimeisanimportantelementintheprocess.Ifthebrokenendsarenotbroughttogetherquicklyarepairisnotpossible.Thisisbecausemoleculeswillformbondswithmoleculesontheirownside.Theinventorssaythesurfacesoftherubbercanberepairedwithinaweekofbeingseparated.TherubberisthecreationofscientistsattheIndustrialPhysicsandChemistryHigherEducationInstitutioninParis.TheorganizationispartofFrance'sNationalCenterforScientificResearch.ThenewmaterialisdescribedingreaterdetailintheresearchpublicationNature.56.AccordingtotheintroductionwhichofthefollowingisNOTtheadvantageofthenewrubber?A.Itcanbemadeaseasilyascommonrubber.B.Itisenvironmentally-friendly.C.Itcanrepairitselfatroomtemperature.D.Itismadeofsmallermolecules.57.Whatdoesthe5thparagraphmainlytellus?A.Whythenewrubberisunique.B.Whythenewrubbercanrepairitself.C.Thenewrubberismadefromhugemolecules.D.Thenewrubberisdifferentfromthecommonrubber.58.Ifwewanttoknowmoreaboutthetechnologyofthiskindofnewrubberwherecanwegettheinformation?A.Intheresearchers'diary.B.Inaguidebook.C.Inaresearchmagazine.D.Inanewspaper.
Somescientistssaythatanimalsintheoceansareincreasinglythreatenedbynoisepollutioncausedbyhumanbeings.Thenoisethataffectsseacreaturescomesfromanumberofhumanactivities.Itiscausedmainlybyindustrialunderwaterexplosionsoceandrillingandshipengines.Suchnoisesareaddedtonaturalsounds.Thesesoundsincludethebreakingoficefieldsunderwaterearthquakesandsoundsmadebyanimalsthemselves.Decibels分贝measuredinwateraredifferentfromthosemeasuredonlanD.A.noiseofonehundredandtwentydecibelsonlandcausespaintohumanears.Inwateradecibellevelofonehundredandninety-fivewouldhavethesameeffect.Somescientistshaveproposedsettinganoiselimitofonehundredandtwentydecibelsinoceans.Theyhaveobservedthatnoisesatthatlevelcanfrightenandconfusewhales.AteamofAmericanandCanadianscientistsdiscoveredthatloudernoisescanseriouslyinjuresomeanimals.Theresearchteamfoundthatpowerfulunderwaterexplosionswerecausingwhalesintheareatolosetheirhearing.Thisseriouslyaffectedthewhales'abilitytoexchangeinformationandfindtheirway.SomeofthewhalesevendieD.TheexplosionshadcausedtheirearstobleedandbecomeinfecteD.Manyresearcherswhoseworkdependsonoceansoundsobjecttoalimitofonehundredandtwentydecibels.Theysaysuchalimitwouldmeananendtoimportantindustrialandscientificresearch.Scientistsdonotknowhowmuchandwhatkindsofnoisesareharmfultooceananimals.HowevermanyscientistssuspectthatnoiseisagreaterdangerthantheybelieveD.Theywanttopreventnoisesfromharmingcreaturesintheocean.71.Accordingtothepassagewhichofthefollowingisincreasinglydangeroustoseacreatures?A.Theman-madenoises.B.Thenoisesmadebythemselves.C.Thesoundofearthquakes.D.Thesoundoftheice-breaking.72.Whichofthefollowingisdiscussedinthethirdparagraph?A.Differentplaceswithdifferenttypesofnoises.B.Theveryhumanearssensitivetoalltypesofnoises.C.Theoceananimals'reactiontonoises.D.Thesamenoisemeasureddifferentlyonlandandintheocean.73.Astotheinfluenceofnoisesonwhaleswhichofthefollowingstatementsistrue?A.Theyaredeaftonoises.B.Noisesatacertainlevelmayhurtthem.C.Theyareeasilyconfusedbynoises.D.NoiseswilllimittheirabilitytoreproducE.74.Wecanknowfromthepassagethatmanyresearchersthinkthatthenoiselimitofonehundredtwentydecibelswould_____.A.preventthemfromdoingtheirresearchworkB.benefitthemalotintheirresearchworkC.dogoodtotheirhealthD.increasetheindustrialoutput75.Accordingtothepassagewhatwillscientistsmostprobablydointhefuture?A.TheywilltrytheirbesttodecreasenoisE.B.Theywillworkhardtocutdownnoisepollution.C.Theywillstudytheeffectofdifferentnoises.D.Theywillprotectanimalsfromharmfulnoises.
Whenahandheldvideogamerunsoutofpowerallyouhavetodoisplugitinandchargeitup.Withinafewyearssomeofyoumightdothesamethingwithmom’scar.Automobilecompaniesaredevelopingvehiclesthatwillplugintoelectricsockets插座justlikemanylaptopsdigitalcamerascellphonesandsmallvideogameplayersdo.Calledplug-inhybrids混合动力汽车thesecarswillgetmostoftheirpowerfromelectricity.Theirdriverswillrarelyhavetostopatgasstations.Thetechnologyismorethanjustcool.Inourautomobile-filledworldplug-invehiclescouldreducetheamountofgasolineweusE.Thatgasismadefromcrudeoilwhichhasbeenkeptrisingincost.Plusdrivingaroundinthesehybridsmayevenhelptheenvironment.Gas-burningcarsproducealotofcarbondioxideatypeofgreenhousegas.Thesegasesstayintheatmospherewheretheytrapheatandcauseglobalwarming.Thefirstcompany-producedplug-inhybridscouldhittheroadsby20l0.ButengineersstillhavealotofworktodotomakethetechnologypracticalandinexpensivE.BatteriesarethebiggestchallengE.Intheplug-in-hybridworldLi-ionbatteriesaregettingthemostattention.Thesebatteriescanstorealargeamountofenergyinasmallpackageandtheylastarelativelylongtimebetweencharges.Li-ionbatteriesarestandardinlaptopscellphonesheartdevicesandsimilarportabledevices.Butbecausecarsaresobigandheavyitwouldstillrequireasuitcase-sizedLi-ionbatterytopoweraboutl2kmofdriving.What’smorethebatteriesareextremelyexpensivE.AcarfilledwithbatteriescouldgoalongdistancesaysTedBohnanelectricalengineerinChicago.Butitcouldn’thaul拖拉anypeopleanditwouldcost$l00000.Soresearchersneedtofigureouthowtomakebatteriessmallerandcheaperamongotherquestions.Theanswersdon’texistyetBohnsays.AsakidIthoughtsomeonesomeplaceknowstheanswertoeverything.Allofthesequestionshaven’tbeendecideD.That’swhatengineeringisabout―makingaguessrunningtestsandfine-tuningresults.59.Thewriterwrotethispassagewiththepurposeof__________________.A.howtochargethehandheldvideogameupB.explaininganewly-developedbatteryC.introducinganewcarD.tellingushowtomakethenewbatterycheaper60.Whichistrueaccordingtothepassage?A.Plug-inhybridswilldonoharmtotheenvironment.B.Li-lionbatteriesinlaptopscanbeusedonplug-inhybrids.C.Somecompaniescanproduceplug-inhybridsnow.D.Driversofplug-inhybridswillspendlessmoneyongasolinE.61.Fromthepassagewecanlearn_________________.A.wecanbuyoneofplug-inhybridsnowB.allpeoplewillbuyoneafter20l0C.thiskindofcarcancarrytwopersonsD.someproblemsaboutplug-inhybridsremaintobedone
Althoughmanhasknownasbestos石棉formanyhundredsofyearsitwasnotuntil160yearsagothatitwasminedforthefirsttimeontheNorthAmericancontinent.H.W.JohnsownerofaNewYorkCitySupplyShopforrooferswasresponsiblefor对负责theopeningofthatfirstminE.Mr.JohnswasgivenapieceofasbestoswhichhadbeenfoundinItaly.Heexperimentedwiththematerialandthenshoweditssurprisingpowerstohiscustomers.Afterputtingonapairofasbestosgloveswhichlookedmuchlikeordinaryworkgloveshetookred-hotcoalsfromthefireplaceandplayedwiththeminhishands.Howastonishedthecustomersweretodiscoverthathewasnotburnedatall.Youcanwellimaginethathehadincreasingbusinessinasbestosroofingmaterials.HoweverbecauseitwasveryexpensivetotransportcarrythemfromItalytotheUnitedStatesMr.JohnssentoutayoungscientisttoseekasourcenearerhomE.Thisyoungmanfoundgreatvein岩脉intheprovinceofQuebecinCanadA.Eversince1881Quebechasledtheworldintheproductionofthisunusualmineralwhichismadeupofmagnesiumsiliconironandoxygen.WhenitisminedtheasbestosisheavyjustasyouwouldexpectamineraltobE.Whenitisseparatedastrangethinghappens;therockbreaksdownintofinesoftsoapyfibres纤维.Scientistsdonotknowwhytherockcanbeseparatedeasilyintothreads线buttheyhavefoundthousandsofusersofthisfireproofmaterialoftheso-calledclothofstone.59.Whichtitlebestexpressesthemainideaofthispassage?A.AsbestosminedinCanadaB.FireproofmatterC.A.wondermineralD.A.newroofingmaterial60.Johnsprovedhisabilityasasalesmanby_______.A.goingintoroofingbusinessB.carryingasbestosfromItalyC.sendingatrainedscientistD.showingtheuseofasbestosgloves61.Whichisthemostimportantcharacterofasbestosthattheauthorwantstoshowus?A.ItislikethreaD.B.Itfeelssoapy.C.Itburnseasily.D.Itisunusuallyheavy.62Theauthor’smainpurposeinwritingthispassagewasto_______.A.showtheneedformorescientistsB.compareasbestoswithothermineralsC.increasethesalesofasbestosD.presentfactsaboutasbestos
BotanythestudyofplantsplaysastrangeroleinthehistoryofhumanknowledgE.FormanythousandsofyearsitwasonefieldaboutwhichhumanshadlittleknowledgE.ItisimpossibletoknowtodayjustwhatourStoneAgeAncestorsknewaboutplantsbutfromwhatwecanobserveofpreindustrialsocietiesthatstillexistsadetailedlearningofplantsandtheirproperties特征mustbeveryancient.ThisisreasonablE.Plantsarethebasisofthefoodpyramidforalllivingthingsevenforotherplants.Theyhavealwaysbeengreatlyimportanttothegoodofpeoplesnotonlyforfoodbutalsoforclothingweaponstoolsmedicineshousingandagreatmanyotherpurposes.Tribes部落livingtodayinthewoodsoftheAmazonrecognizehundredsofplantsandknowmanypropertiesofeach.Tothembotanyassuchhasnonameandisprobablynotevenrecognizedasaspecialbranchofknowledgeatall.Unfortunatelythemoreindustrializedwebecomethefartherawaywemovefromdirectrelationwithplantsandthelessclearourknowledgeofbotanygrows.YeteveryonecomesunconsciouslyonasurprisingamountofbotanicalknowledgeandfewpeoplewillfailtorecognizearoseoranapplE.WhenourNewStoneAgeancestorslivingintheMiddleEastabout10000yearsagodiscoveredthatcertaingrassescouldbeharvestedandtheirseedsplantedforricherproductionthenextseasonthefirstgreatstepinanewconnectionofplantsandhumanswastaken.Grainswerediscoveredandfromthemflowedthemarvelofagriculture:plantedcrops.Fromthenonhumanswouldincreasinglytaketheirlivingfromthecontrolledproductionofafewplantsratherthangettingalittlehereandalittletherefrommanyvarietiesthatgrewwildandthecollectedknowledgeoftensofthousandsofyearsofexperienceandcloserelationswithplantsinthewildwouldbegintodisappear.67.Whichofthefollowingassumptions假设aboutearlyhumansisexpressedinthepassage?A.Theyprobablyhadwideknowledgeofplants.B.TheyclearlydividedknowledgeintoseparatefieldsC.Theydidnotenjoythestudyofbotany.D.Theyplacedgreatimportanceonownershipofproperty.68.Accordingtothepassagewhyhasgeneralknowledgeofbotanydecreased?A.PeoplenolongervalueplantsasausefulresourcE.B.BotanyisnotrecognizedasaspecialbranchofsciencE.C.Researchisunabletokeepupwiththeincreasingnumberofplants.D.DirectrelationwithavarietyofplantshasdecreaseD.69.Inparagraph2theunderlinedwordmarvelisclosestinmeaningto_____.A.edgeB.signC.beginningD.wonder70.Accordingtothepassagewhatwasthefirstgreatsteptowardthepracticeofagriculture?A.Theinventionofagriculturetoolsandmachines.B.Thedevelopmentofasystemofnamesforplants.C.ThediscoveryofgrassesthatcouldbeharvestedandreplanteD.
Lifeonlandprobablybeganabout430millionyearsagothoughithasexistedinthewaterforperhapsasmuchas3000millionyears.Whenwethinkofthefirstthingonlandweprobablythinkofstrangeanimalscomingoutoftheoceansbutinfactnoanimalscouldhavebeenlivingifplantshadnotbeenonlandfirst.PlantshadtobeonlandbeforeanimalsarriveD.Theysuppliedthefirstlandanimalswiththesurroundingandfoodnecessitysincetheytheplantsaretheonlyformoflifethatisabletogetandstoreenergy.Thefirstplantstoexistoutofthewaterwereprobablycertainkindsofalgae海藻whichwerefollowedbyotherplantsthatgrewclosetothegroundandneededwaterinwhichtoreproducE.Oncethemovetolandhadbeenmadehoweverevolution进化tookplacequickly.Bytheendof100millionyearsplantshaddevelopedtheirroots根andsomehadgottree-likeformssinceheightwasveryimportantingainingsunlight.About300millionyearsagomuchoftheworldwascoveredwithforestsofhugetrees.Inmostwaystheywerelikemoderntrees.Theyhadrootsleaveswoodbutmostlytheyhadnotdevelopedseeds.60.Themainideaofthefirstparagraphis________.A.lifeonlandprobablybegan430yearsagoB.thefirstanimalonlandcamefromoceansC.therewouldn'tbeanimalswithoutplantsD.plantsaretheonlyformoflifethatisabletogetandstoreenergy61.Whichofthefollowingstatementsistrueaccordingtothepassage?A.Algaehasexistedformorethan430millionyears.B.ItisimpossiblethatalgaemightbetheearliestplantonlanD.C.Plantsgetfoodfromanimalsintheoceans.D.EvolutionbeganafteranimalsappearedonlanD.62.Plantswithrootsappearedabout________millionyearsago.A.430B.300C.330D.10063.Accordingtothepassage________appearedearlierthan________.A.apples;orangesB.oranges;applesC.oranges;rosesD.algae;wheat
UntilrecentlythescienceofthefuturewassupposedtobeelectronicsandartificialintelligencE.Todayitseemsmoreandmorelikelythatthenextgreatbreakthroughsintechnologywillbebroughtthroughacombinationofthosetwoscienceswithorganicchemistryandgeneticengineering.Thiscombinationisthescienceofbiotechnology.Organicchemistryenablesustoproducemarveloussynthetic合成的materials.HoweveritisstilldifficulttomanufactureanythingthathasthecapacityofwooltoconserveheatandalsotoabsorbmoisturE.Nothingthatwehavebeenabletoproducesofarcomesanywherenearthecombinationofstrengthlightnessandflexibilitythatwefindinthebodiesofordinaryinsects.Neverthelessscientistsinthelaboratoryhavealreadysucceededingrowingamaterialthathasmanyofthecharacteristicsofhumanskin.Thenextstepmaywellbebiotechheartsandeyeswhichcanreplacediseasedorgansinhumanbeings.Thesewillnotberejectedbythebodyasisthecasewithorgansfromhumans.Theapplicationofbiotechnologytoenergyproductionseemsevenmorepromising.In1996thefamoussciencefictionwriterArthurC.Clarkemanyofwhosepreviouspredictionshavecometruesaidthatwemaysoonbeabletodevelopremarkablycheapandrenewablesourcesofenergy.Someofthesepowersourceswillbebiological.Clarkeandothershavewarnedusrepeatedlythatsoonerorlaterwewillhavetogiveupourdependenceonnon-renewablepowersources.Coaloilandgasareindeedconvenient.Howeverusingthemalsomeanscreatingdangerouslyhighlevelsofpollution.Itwillbeimpossibletomeetthegrowingdemandforenergywithoutincreasingthatpollutiontocatastrophic灾难性的levelsunlesswedeveloppowersourcesthatarebothcheaperandcleaner.Itisattemptingtothinkthatbiotechnologyorsomeotherscienceofthefuturecansolveourproblems.Beforewesurrendertothattemptationweshouldremembernuclearpower.Onlyafewgenerationsagoitseemedtopromiselimitlesscheapandsafeenergy.TodaythosepromiseslieburiedinaconcretegraveinaplacecalledChernobyl切尔诺贝利intheUkrainE.Biotechnologyisunlikelyhowevertobreakitspromisesinquitethesameorsuchadangerousway.68.Accordingtothepassagethescienceofthefutureislikelytobe__________.A.electronicsB.biotechnologyC.geneticengineeringD.nucleartechnology69.Organicchemistryhelpstoproducematerialsthatare__________.A.asgoodaswoolB.asgoodasaninsect’sbodyC.notasgoodasnaturalmaterialsD.betterthannaturalmaterials.70.Accordingtothepassageitmaysoonbepossible__________.A.tomakesomethingasgoodashumanskinB.toproducedrugswithoutsideeffectsC.totransplanthumanorgansD.tomakeartificialheartsandeyes71.In1996ArthurC.Clarkepredictedthat___________.A.biologicalpowersourceswouldbeputintousesoonB.oilgasandcoalcouldberepeatedlyusedinthefutureC.dependenceonnon-renewablepowersourceswouldbereducedsoonD.theChernobyldisasterwouldhappenintwoyears72.Whatdowelearnfromthelastparagraph?A.Biotechnologycansolveallourfutureenergyproblems.B.Biologicalpowerischeaperthannuclearpower.C.Biologicalpowermaynotbeasdangerousasnuclearpower.D.Biologicalpowerwillkeepallitspromises.
根据短文内容从短文后的选项中选出能填入空白处的最佳选项选项中有两项为多余选项RecentlysomeAmericanscientistshavegivenausefulpieceofadvicetopeopleinindustrializednations.Theysaypeopleshouldeatmoreofthesamekindoffoodeatenbyhumanslivingmorethan10000yearsago.71Thescientistssaythatthehumanlifehaschangedgreatly.Ourbodieshavenotbeenabletodealwiththesechangesinlifestyleandthishadledtonewkindsofsicknesses.72Sotheyarecalleddiseasesofcivilization.Manycancersanddiseasesofthebloodsystemareexamplesofsuchdiseases.ScientistsnotedthatpeopleinboththeOldStoneAgeandtheNewStoneAgeenjoyedverylittlealcoholortobaccoprobablynone.73Howeverachangeinfoodisoneofthemaindifferencesbetweenlifeinancienttimesandthatoftoday.StoneAgepeoplehuntedwildanimalsfortheirmeatwhichhadmuchlessfatthandomesticones.Theyatealotoffreshwildvegetablesandfruits.Theydidnothavemilkoranyotherdairyproductsandtheymadeverylittleuseofgrains.74Weeatsixtimesmoresaltthanourancestors.Weeatmoresugar.WeeattwiceasmuchfatbutonlyonethirdasmuchproteinandmuchlessvitaminC.75ButscientistssaythatwewouldbemuchhealthierifweeatmuchthesamewaytheancientpeopledidcuttingtheamountoffattysaltyandsweetfooD.A.StoneAgepeoplelivedasimplelifE.B.ButtodayweenjoyeatingalotofthesE.C.Inthatcasetheywouldlivemuchhealthier.D.AncientpeoplealsogotlotsofphysicalexercisE.E.Thesenewsicknesseswerenotknowninancienttimes.F.Peopletodayprobablydon'twanttolivelikeourancestors.G.Modernpeopleusedtosufferfromdiseasesofcivilization.
ScientistswarntodaythattheAtlanticbluefintuna金枪鱼facesdisappearanceunlesscertainactionistaken.TheyusedelectronicwaystotrackthemovementofthepowerfulfishfromtheGulfofMexicototheMediterraneanandreporttodayinthejournalNaturethatmealsofsushiandsandwicheswithtunaworldwidearemoredangerousthananyonehasimagineD.Thebluefintunacanlivefor30yearsgrowtothreemetresinlengthandweighasmuchas700kg.A.goodonecanfetchasmuchas£52000intheTokyofishmarkets.Inmylifetimewe’vebroughtthisbigfishtothedoorstepofdeathinthewesternAtlanticOceansaidBarbaraBlockofStanfordUniversityinCalifornia.Theelectronicwayoftracksprovidesthebestscientificinformationwe’veeverhadtomanagethesetunaandwemustasaninternationalcommunitystarttoactactivelytomakesureofthefutureofthisfish.ScientistshaverepeatedlysaidthattheharvestoftheseascannotbeasgoodasbeforE.TherearefewerandfewerfishinaroundNewfoundlandNorthSeaandIcelandsofishermenhavepushedfurtheroffshoreinsearchofdeepoceanfish.Tuna―intheMediterraneanandJapan―havebeenunderincreasingpressureforyears.TheInternationalCommissionontheConservationofAtlanticTunahastriedtomanagethefishsince1969.Therearetwopopulations:awesternonethathasdroppedby80%inthepast30yearsandalargereasternpopulation.Althoughcatchesarecontrolledby3000tonsayearinthewesternfisheryand32000intheeastnooneknewwhetherthelimitsworkeD.SoProfessorBlockandherteamplacedtracksonhundredsofthefishandtrackedthemtodepthsofmorethan900metresandonjourneysofthousandsofmilesmeasuringthemovementbodyandwatertemperatures.TherearetwowaystosavetheAtlanticbluefintuna―protectthemintheirproductiongroundsandintheirfeedinggroundsProf.BlocksaiD.ThiswillneedimmediateactioninboththecentralAtlantictoreducethelossofthebigfishwhilehuntingandintheGulfofMexicoandMediterraneanwheretunaproduceasseparatepopulations.72.Thebluefintunainthispassagemainlyreferstotheone_______.A.intheAtlanticB.inthePacificC.intheGulfofMexicoD.intheMediterranean73.WhichofthefollowingisNOTtrueaccordingtothispassage?A.Thebluefintunaisakindoflargeandheavyfish.B.Thenumberofthebluefintunaintheseaisgettingsmallerandsmaller.C.ScientistsareworriedaboutthefutureofthetunA.D.ScientiststhinkthattheharvestoftheseaswillremaingooD.74.AccordingtoProfessorBlocktunacanbesavedby______.A.findinganewwaytoprotectthemB.controlingthecatchesofthemC.reducingthepopulationtoeatthemD.protectingthemintheirproductionandfeedinggrounds75.Thepurposeofthepassageisto______.A.tellpeopleanewwayhasbeenfoundtosavethebluefintunaB.callforactiontosavethebluefintunaC.warnpeoplenottoeattunasandwichesanymoreD.helpscientiststofindanewwaytosavethebluefintuna
Washington―Thelargestozone臭氧holeeverobservedhasopenedupoverAntarcticaaccordingtothescientistsoftheUSNationalAeronauticsandSpaceAdministrationNASA.Theybelieveitisasignthatozone―destroyinggasesproducedyearsagoarejustnowcausingthelargestquantitiesofozonetodisappear.Thisyear’sSouthPoleozoneholespreadsoverabout28.5millionsquarekilometersanareathreetimeslargerthanthelandmassoftheUnitedStates.PicturesoftheholehavebeenofferedbyNASA.TheholeappearsasagiantbluemasstotallycoveringAntarcticaandstretchingtothesoutherntipofSouthAmericA.Thelasttimetheozoneholewasclosetothissizewasin1998whenitspreadoverabout27.2millionsquarekilometersNASAsaiD.PaulNewmanwhoworkswithNASA’sTotalOzoneMappingSpectrometerTOMSinstrumentonaNASAsatellitesaidozonewatchershadexpectedabigholethisyearbutnotthisbig.TheAntarcticaozoneholefirstobservedin1985iscausedbythedepletion损耗ofEarthprotectingozonebyhuman-madechemicalssuchaschlorofluorocarbonsknownasCFCs.Eventhoughthesechemicalswerenotallowedtousefromthebeginningof1987theyremainintheatmosphereandwillcontinuetodosoforyearsNewmansaiD.Thisyear’slargeholemayhavebeencausedbyachangeinaswirlinghigh-levelaircurrentoverAntarcticawhichcirclestheareaandcontainsthezoneholeNewmansaiD.56.Thetextismainlyabout____.A.thediscoveryofthelargestozoneholeB.thediscoveryoftheAntarcticaozoneholeC.thehistoryoftheAntarcticaozoneholeD.thesizeofthelargestozonehole57.Thetime1985wastalkedaboutinthetextbecauseitwaswhentheAntarcticaozonehole____.A.waswatchedbyNewmanB.wasfirstclosedC.disappearedD.wasfirstwatched58.ThereisagiantozoneholeoverAntarcticabecause____overtherE.A.human-madechemicalshaveprotectedozoneB.ozonehasprotectedtheearthC.human-madechemicalshavedestroyedozoneD.human-madechemicalshaveincreasedozone
ThetelevisioncameraisratherlikethehumaneyE.Boththeeyeandthecamerahavealens镜头andbothproduceapictureonascreen.Ineachcasethepictureismadeupofmillionsofspotsoflight.Letusseehowtheeyeworks.Whenwelookatanobjectapersonahouseorwhateveritmaybe.wedonotseeallthedetailsoftheobjectinonepiecE.WeimaginewhatwedobutthisisnotthecasE.Infacttheeyebuildsupthepictureforusinourbrainwhichcontrolsoursightinmillionsofseparatepartsandalthoughwedonotrealizeitallthesedetailsareseenseparately.Thisiswhathappenswhenwelookatsomething.Beamsoflightofdifferentdegreesofintensity强度reflectedfromallpartsoftheobjectstrikethelensoftheeyE.Thelensthengatherstogetherthespotsoflightfromthesebeamsandfocusesthemontoalightsensitiveplatetheretina视网膜atthebackoftheeyeball.Inthiswayanimageoftheobjectisproducedontheretinaintheformofapatternoflights.Theretinacontainsmillionsofminutelightsensitiveelementseachofwhichisseparatelyconnectedtothebrainbyatinyfibreintheoptic视力的nervE.Thesenervefibresworkingindependentlypickoutminutedetailsfromtheimageontheretinaandturnthesmallspotsoflightintonerveimpulses冲击ofdifferentstrengths.Theythentransmittheseimpulsestothebrain.TheydothisallatthesametimE.AllthedetailsoftheimagearefedtothebrainandaswehavetaughtourbraintoaddthemtogethercorrectlyweseeaclearpictureoftheobjectasawholE.TelevisionwhichmeansvisionatadistanceoperatesonasimilarprinciplE.Atelevisionpictureisbuiltupinthousandsofseparateparts.Beamsoflightreflectedfromthesubjectbeingtelevisedstrikethelensofthetelevisioncamerawhichcorrespondsto相当于thelensoftheeyE.Thecameralensgatherstogetherthespotoflightfromthesebeamsandfocusesanimageofthesubjectontoaplatethesurfaceofwhichiscoatedwithmillionsofphotoelectricelementssensitivetolight.72.Inthefirstparagraphwearetoldthatthetelevisioncameraislikethehumaneyein__________________A.onewayB.twowaysC.threewaysD.alargenumberofways73.WhichofthefollowingisNOTtrueaccordingtothewriter?A.Theeyeproducesapictureonascreen.B.Oursightiscontrolledbyourbrain.C.WeseeallthedetailsofanobjectinonepiecE.D.Thepictureismadeupofmillionsofspotsoflight.74.Alltheraysoflightreflectedfromobjectsare______________A.ofthesameintensityB.notatallintenseC.tosomedegreeintenseD.ofvaryingintensities75.A.cameralensfocusesanimageonto_____________.A.thesubjectB.asurfacemadeupofmillionsoflightsensitiveelementsC.atelevisionsetD.millionsofphotoelectricbeamsoflight
Peopleallovertheworldtodayarebeginningtohearandlearnmoreandmoreabouttheproblemofpollution.Pollutioniscausedeitherbyman'sreleaseofcompletelynewandoftenartificialsubstancesintotheenvironmentorbyreleasinggreatlyincreasedamountsofanaturalsubstancesuchasoiltankersintotheseA.Thewholeindustrialprocesswhichmakesmanyofthegoodsandmachinesweneedanduseinourdailylivesisboundtocreateanumberofwasteproductswhichupsettheenvironmentalbalanceortheecologicalbalanceasitisalsoknown.Manyofthesewasteproductscanbepreventedordisposedofsensiblybutclearlywhilemoreandmorenewandcomplexgoodsareproducetherewillbenewdangerouswastestobedisposedofforexamplethewasteproductsfromnuclearpowerstations.Manypeoplethereforeseepollutionasonlypartofalargerandmorecomplexproblemthatisthewholeprocessofindustrialproductionandconsumptionofgoods.Othersagainseetheproblemmainlyinconnectionwithagriculturewherenewmethodsarehelpingfarmersgrowmoreandmoreontheirlandtofeedourever-increasingpopulations.HoweverthelanditselfisgraduallybecomingwornoutasitisbeingusedinsomecasestooheavilyandartificialfertilizercannotrestorethebalancE.Whateveritsunderlyingreasonsthereisnodoubtthatmuchofthepollutioncausedcouldbecontrolledifonlycompaniesindividualsandgovernmentswouldmakemoreefforts.InthehomethereisanobviousneedtocontrollitterandwastE.Foodcomeswrappedupthreeorfourtimesinpackagesthatallhavetobedisposedof;drinksareincreasinglysoldinbottlesortinswhichcannotbereuseD.Thisnotonlycausesalitterproblembutalsoisagreatwasteofresourcesintermofglassmetalsandpaper.Advertisinghashelpedthisprocessbypersuadingmanyofusnotonlytobuythingsweneitherwantnorneedbutalsotothrowawaymuchofwhatwedobuy.Pollutionandwastecombinetobeaproblemeveryonecanhelptosolvebycuttingoutunnecessarybuyingexcessconsumptionandcarelessdisposaloftheproductsweuseinourdailylives.45.Theunderlinedphrasedisposedofinthesecondparagraphmeans_______.A.dealtwithB.exposedC.disapprovedofD.collected46.Inthewriter’sviewthemorenewgoods_______.A.thelesspollutionB.theharderpollutioncanbepreventedC.themorepollutiontherewillbeD.themoreeasilypollutioncanbecontrolled47.Whatcanwelearnfromthelastparagraph?A.Wecandomuchtoreducepollution.B.Thegovernmentistryinghardtostoppollution.C.IndividualsknowhowtogetridofthehabitoflitteringeverywherE.D.Wecan’tstopbuyingunnecessarythings.48.Peoplecanhelpsolvetheproblemofpollutionby_______.A.urgingtheirgovernmentstocontrollitterandwasteB.makinganti-pollutionadvertisementsC.cuttingdowntheuseofoilandotheroilproductsD.reducingunnecessarybuyingover-consumptionandcarelessdisposalofwastes
APlanForExploringMars火星探索计划NASAismovingaheadwithplanstoputalong-armedlanderonMars’icynorthpoletosearchforcluesforwaterandpossiblesignsoflifE.The$386millionPhoenixMarsisplannedtotouchdownintheMartianarcticin2008.ThestationaryprobewilluseitsroboticarmtodigintotheicylandandpickupsoilsamplestoanalyzE.In2002theMarsOdysseyorbiterspottedevidenceofice-richsoilnearthearcticsurfacE.ScientistshopethePhoenixmissionwillfindcluestothegeologichistoryofwaterontheRedPlanetanddeterminewhethermicrobesexistedintheicE.PhoenixwillbethefirstmissionoftheMarsScoutprogramarenewedlow-costefforttostudytheRedPlanet.ThePhoenixmissionexploresnewterritoryinthenorthernplainsofMarsanalogoustothepermafrostregionsonEarthPeterSmithsaiD.TruetoitsnamePhoenixrosefromtheashesofpreviousmissions.ThelanderforPhoenixwasbuilttoflyaspartofthe2001MarsSurveyorprogram.Buttheprogrambrokedownafterthewell-knowndisappearanceoftheMarsPolarLanderin1999.ThePolarLanderlostcontactduringalandingattemptneartheplanet’ssouthpoleafteritsrocketengineshutoffprematurelycausingthespacecrafttofallabout130feettoalmostcertaindestruction.ThePhoenixprobehadbeeninstorageataLockheedMartincleanroominDenverbeforeitwasreusedforitspresentmission.ItwillcarryscienceinstrumentsthatweredesignedfortheMarsSurveyorprogramincludinganimprovedpanoramiccameraandatrench-diggingroboticarm.PhoenixwillliftofffromtheKennedySpaceCenterinAugust2007andlandontheplanetninemonthslater.63.Thepassagemainlytellsreadersthat_________.A.cluesofwaterwillbefoundinPhoenixB.PhoenixwillbesenttofindcluesofwateronMarsC.August2007willseePhoenixliftoffD.theMarsScoutprogramwillbecarriedout64.Theunderlinedwordprematurelyparagraph5means_________.A.ontimeB.behindthetimeC.outofworkD.aheadoftime65.AccordingtothepassageweknowPhoenixwilllandonMars_________.A.inMay2008B.inAugust2007C.inAugust2008D.inSeptember200866.AccordingtothepassagethenamePhoenixisafterthemeaningof_________.A.rebirthB.deathC.energyD.hope67.AfterPhoenixlandsonMarswecaninferitwillfirstly_________.A.findsoilsamplesandsendthemtotheearthB.lookfortheicylandtodigforthesoilsamplesC.takephotosandsendthemtotheearthD.findtheremainsoftheMarsPolarLander
ClimaticconditionsaredelicatelyadjustedtocompositionoftheEarth'satmospherE.Iftherewereachangeintheatmosphere―forexampleintherelativeamountsofatmosphericgases―theclimatewouldprobablychangealso.A.slightincreaseinwatervapor蒸汽forexamplewouldincreasetheheat-keepingcapacityoftheatmosphereandwouldleadtoariseinglobaltemperatures.ThelevelofcarbondioxideCO2intheatmospherehasanimportanteffectonclimaticchangE.MostoftheEarth'sincomingenergyisshort-wavelengthradiation短波辐射whichtendstopassthroughatmosphericCO2easily.TheEarthhoweverreradiatesmuchofthereceivedenergyaslong-wavelengthradiation长波辐射whichCO2absorbsandthengoestowardtheEarth.Thisphenomenonknownasthegreenhouseeffectcanresultinanincreaseinthesurfacetemperatureofaplanet.AnextremeexampleoftheeffectisshownbyVenusaplanetcoveredbyheavycloudscomposedmostlyofCO2whosesurfacetemperatureshavebeenmeasuredat430~C.IftheCO2contentoftheatmosphereisreducedthetemperaturefalls.AccordingtoonerespectabletheoryiftheatmosphericCO2concentrationwerehalvedtheEarthwouldbecomecompletelycoveredwithicE.AnotherequallyrespectabletheoryhoweverstatesthatahalvingoftheCO2concentrationwouldleadonlytoareductioninglobaltemperaturesof3℃.IfbecauseofanincreaseinforestfiresorvolcanicactivitytheCO2contentoftheatmosphereincreasedawarmerclimatewouldbeproduceD.PlantgrowthwhichreliedonboththewarmthandtheavailabilityofCO2wouldprobablyincreasE.AsaconsequenceplantwouldusemoreandmoreCO2.EventuallyCO2levelswoulddecreaseandtheclimateinturnwouldbecomecooler.Withreducedtemperaturesmanyplantswoulddie;CO2wouldthusbereturnedtotheatmosphereandgraduallythetemperaturewouldriseagain.Thusifthisprocessoccurredtheremightbealong-termoscillation波动intheamountofCO2presentintheatmospherewithregulartemperatureincreaseanddecreasE.SomeclimatologistsarguethattheburningoffossilfuelshasraisedthelevelofCO2intheatmosphereandhascausedaglobaltemperatureincreaseofatleast1℃.Butasupposedglobaltemperatureriseof1℃mayinrealitybeonlyseveralregionaltemperatureincreasesrestrictedtoareaswheretherearemanymeteorological气象的stations.OtherareasforexampletheSouthernHemisphereoceaniczonemaybeexperiencinganequaltemperaturedecreasethatisunrecognizedbecauseoftheshortageofmeteorologicalrecordingstations.51.Whichofthefollowingquestionsdoestheinformationsuppliedinthispassagetrytoanswer?A.WhatarethestepsintheprocessthattakesplaceasCO2absorbslong-wavelengthradiation?B.Howmightourunderstandingofthegreenhouseeffectbeimprovediftheburningoffossilweredecreased?C.WhatmightcauseaseriesofregularincreasesanddecreasesintheamountofCO2intheatmosphere?D.WhyaretherefewermeteorologicalrecordingstationsintheSouthernHemisphereoceaniczonethanatmosphere?52.Theauthorisprimarilyconcernedwith________.A.explainingtheeffectsthattheburningoffossilfuelsmighthaveonclimateB.explainingtheeffectsofCO2onatmosphericradiationC.discussingeffectsthatchangesintheCO2levelintheatmospheremighthaveonclimateD.challenginghypotheses假说abouttheeffectsofwatervaporandCO2onclimate53.ThepassagesuggeststhatalargedecreaseintheamountofCO2intheatmospherewouldresultin_________.A.atleastaslightdecreaseinglobaltemperaturesB.atthemostaslightincreaseinshort-wavelengthradiationreachingtheEarthC.aslightlong-termincreaseinglobaltemperaturesD.aslightshort-termincreaseinatmospherewatervaporcontent54.TheauthorreferstoVenusprimarilyinorderto_______.A.showthatthegreenhouseeffectworksonotherplanetsbutnotonEarthB.showthedegreetowhichEarth'satmospherediffersfromthatofVenusC.supporttheopinionthataswatervaporincreasestheamountofCO2increasesD.supporttheargumentthattheCO2levelintheatmospherehasasignificanteffectonclimate55.Thediscussionofclimateinthepassagesuggeststhat_________.A.climateisperfectlystableB.weareunableatpresenttomeasureglobaltemperaturechangesprecisely.C.theonlycauseofregionalclimaticfluctuations波动isthechangeinCO21evelintheatmosphereD.slightregionaltemperaturechangescanbeconsideredanabnormalfeature特征oftheenvironment
GlobalwarmingandchangingclimaticconditionsaretriggeringdiseaseepidemicsinwildlifearoundtheworldreportsafamousteamofecologistsandepidemiologistsintheFridayJune21stissueofScience.Whatismostsurprisingisthefactthatclimatesensitiveoutbreaksarehappeningwithsomanydifferenttypesofpathogens病原体----virusesbacteriafungiandparasites----aswellasinsuchawiderangeofhosts寄主includingcoralsoystersterrestrialplantsbirdsandhumanssaysleadauthorDrewHarvellofCornellUniversity.Thisisn'tjustaquestionofcoralbleachingforafewmarineecologistsnorjustaquestionofmalariaforafewhealthofficials---thenumberofsimilarincreasesindiseaseincidenceisastonishingsayscoauthorRichardOstfeldfromtheInstituteofEcosystemStudiesinMillbrookNewYork.Wedon'twanttobealarmistsbutwearealarmeD.TheteamdocumentedexamplesofvirusesbacteriaandfungiassociatedwithdiseasesthatdevelopmorerapidlywithslightrisesintemperaturE.ManyvectorsofdiseasesuchasmosquitoesfliesandrodentsaswellastheviralfungalandbacterialpathogensarehighlytemperatureandmoisturesensitivE.AstemperatureincreasesthesecarriersarelikelytospreadintonewareasandmayhavepotentiallydevastatingeffectsonwildlifepopulationsthathavenotbeenpreviouslyexposeD.ReproductiongrowthandbitingratesofinsectsallgoupwithincreasesoftemperaturE.Winteristhelimitingtimeformanypathogenskillingbackpopulationseachyear.Withmilderwintersthispopulationbottleneckmayberemovedformanyspecies.Warmerlongersummersalsomeanthattheperiodoftimeofdiseasetransmissionislonger.Warmersummersmayincreasehostsusceptibilitytodiseaseduetothermalstressparticularlyintheoceans.MarinebacteriaandfungalgrowthratesarepositivelycorrelatedwithincreasingtemperaturE.76.Wherecanweprobablyfindthispassage?Ina__________.A.BookB.magazineC.textbookD.dictionary77.Accordingtothepassagethereportwaswrittenby________.A.DrewHarvellB.RichardOstfeldC.DrewHarvellandRichardOstfeldD.Ateamofecologistsandepidemiologists78.Whatdotheunderlinedwordsthesecarriersinthelastparagraphreferto?A.MosquitoesandfliesB.RodentsC.TheviralfungalandbacterialpathogensD.Alloftheabove79.Accordingtothispassagetheoutbreaksofdiseaseepidemicstendtooccurin______.A.winterB.springC.summerD.autumn
ThepastfiftyyearsorsohaveseenthegradualdisappearingofanimalsfromthisearthfishesfromtheseatreesandplantsfromthelanD.Manyfactorsresultinthisonpleasantphenomenon现象.AmongthemhuntingisthemainfactorthatendangerswildlifE.Somepeoplekillwildlifeforsport.Theytakepleasureincollectingheadsandhides.Yetothersspecializeincommercialhuntinglikekillingwhales.Apartfromthistherapidlygrowinghumanpopulationthreatenswildlifeonlandtoo.Townsexpandandroadshavetobebuiltsoforestsareburntandtreesarecutdown.ItseemsthatmanneedseveryinchoflandwithinhisreachsohemovesontothenaturalhabitatofwildlifE.TigerslionsandleopardsslowlydieoffwithoutthefoodarmshelterthattheforestsprovidE.Inadditionrapidurbanization城市化meansindustrialexpansion.Veryoftenpoisonouschemicalsindustrialwastesandoilaredumpedintotheriversandseas.FishandbirdsarethreateneD.Mandependsgreatlyonanimalsforsurvival.Heneedstheirfleshhidesandfurs.Thusmancannottowithoutwildlife;orhehimselfwoulddieout.Thepublicshouldbemadeawarethatitwouldbebettertoshoottheanimalswithacamerathanwithagun.Inthiswaytheycanpreserveandhelpwildlifetocontinuelivingratherthantoremoveallsignsofit.ManmustlearntofarmtheseaashedoesthelanD.Heshouldcontroltheamountandthefrequencyofhiscatch.ManalsoneedstobuildreservesandtopasslawstostopthekillingofanimalsespeciallythosethatarealreadyrarE.Tokeepthepresentanimalkingdomtheleastthatmancandoistocleantheseasandtopreventpollution.52.Howmanycausesarementionedthatresultintheunpleasantphenomenon?A.2B.3C.4.D.553.Theunderlinedwordhabitatprobablymeans.A.lifeB.homeC.landD.condition54.Thewriter'spurposeinwritingthetextisto.A.callpeople'sattentiontothedangerofwildlifeB.explainhowimportantwildlifeistohumanbeingsC.callpeople'sattentiontoseriousproblemsofpollutionD.explaintherelationshipbetweenwildlifeandhumanbeings55.Itisimpliedthatman.A.shouldnothuntwildlifeB.willdisappearifwildlifediesoutC.needslandmorethanwildlifedoesD.haslittleknowledgeofseafanning
Whatifyouarrivedhometofindadelicioushotmealwaitingforyoupreparedbyyourveryownkitchenrobot?ItmightsoundlikesciencefictionbutprofessorsattheuniversityofTokyohavetakenthefirststepstowardmakingthatscenarioareality.Theteamrecentlyintroducedahumanoidkitchenrobotthatcanpourteaandotherdrinksintocupsandservethemtoguests.Whenteatimeisovertherobotcanalsowashthedishesandputthemaway.InCaliforniaanotherinterestingkitchenrobothasbeendeveloped.CalledtheReadybotitcanpickupobjectsandeitherstorethemincabinetsorputtheminthetrash.Italsocarriesaseparatefloor-cleaningrobotthatcanoperatebyitself.UnliketheJapaneserobotReadybotisnothumanoid.Insteaditlooksmorelikealargeboxwitharmsandwheels.ReadybotwascreatedbyengineersanddesignerswhoestablishedaclubcalledtheReadybotChallenge.Theybelievethatinthefuturemillionsofrobotswillbeneededinhomestoperformordinaryhouseholdtasks.Readybotisjustthefirststepintheirplantocreatearobotthatcantacklejobsnotonlyinkitchensbutinotherroomsofhomesandinofficesaswell.Clearlytherearetechnologicalhurdlestoovercomebeforerobotscancookacompletedinnerandtherearealsomanysafetyconcerns.Noteveryoneespeciallyparentswouldbecomfortablewiththeideaofrobotsintheirhousemanipulatinghotpansandsharpknives.TheEuropeanCommissionrecentlyfundedaprojecttostudytheseconcerns.56.WhatdoesthewriterimplyabouttheJapaneserobot?A.Itperformsfewerfunctionsthanreadybotcan.B.itlooksmorelikeapersonthanReadybotdoes.C.ItspeaksmorelanguagesthanReadybotdoes.D.Itcosts1esstomanufacturethanReadybotdoes.57.WheredotheengineersanddesignershopethatReadybotwilloperateinthefuture?A.OnspacecraftB.InautomobilesC.OnplaygroundsD.Atcompanies58.Whatdoesthewriterimplyaboutparents?A.Theyhaveshowntremendousinterestinkitchenrobots.B.Theydon’thavestrongopinionsaboutkitchenrobots.C.Theymightthinkthatkitchenrobotscouldbedangerous.D.Theycan’twaittobuykitchenrobotsfortheirhomes.59.AccordingtothewriterwhathastheEuropeanCommissiondonefortheproject?A.IthasbuiltfactoriesB.IthasprintedmanualsC.IthashiredworkersD.Ithasprovidedmoney
Egyptianresearchersbelievetheyhaverecognizedthemummy木乃伊ofHatshepsutthemostfamousqueentoruleancientEgyptfoundinanaveragetombinEgypt’sValleyoftheKings.Researcherssaidthemummywasoneoftwofemalesfoundin1903inasmalltombbelievedtobethatofHatshepsut’snurseSitreIn.Infacttherehasbeentheideaovertheyearsthatoneofthemummiesmaybethatofthequeenwhoruledfrombetween1503and1482BCattheheightofancientEgypt’spower.Thedecisivetruth-tellingfactwasatoothinawoodenboxmarkedwiththequeen’snameHawasssaiD.Theboxwasfoundin1881inahidingplaceofroyalmummiescollectedandhiddenawayattheDeiral-Baharitempleabout1000metresawayfromthetomB.CheckingallthemummieswhichmightbeHatshepsut’sYehyaZakariyaamedicineprofessorfoundthatthetoothwasaperfectfitinaholeintheupperjawofoneofthetwofemalesafatwomanbelievedtohavesufferedfromcanceranddiabetes.TherecognitionofthetoothwiththejawcanshowthisisHatshepsutHawasssaiD.Atoothislikeafingerprint.AnotherresearcherElizabethThomasspeculatedmanyyearsagothatoneofthemummieswasHatshepsut’sbecausehowtherightarmwasputoverthewoman’schestsuggestedroyalty.Itwasguessedthatthemummymighthavebeenhiddeninthetombforsafekeepingbecauseherstepsonandsuccessor继任者TuthmosisIIItriedtowipeouthermemory.Hatshepsutstolethepowerfromheryoungstepson.Afterherdeathrecordsweredestroyedandherbodywasdugout.41.AccordingtothepassageHatshepsut______.A.wastheonlyqueeneverrulingEgyptB.diedofcanceranddiabetesC.livedbetween1503and1482BCD.wasburiedtogetherwithhernurse42.Whentheyfoundtheboxpeopleknew______.A.whereHatshepsutwasburiedB.whyHatshepsut’sbodywaslostC.thetoothwasHatshepsut’sD.Hatshepsut’stombwasaverage43.WhatisthekeytotherecognitionofHatshepsut’smummy?A.Thetooth.B.Thefingerprint.C.Hatshepsut’snamE.D.SitreInhernursE.44.WhichofthefollowingcanbestreplacetheunderlinedwordspeculatedinParagraph5?A.admittedB.guessedC.provedD.doubted45.Itcanbeinferredfromthepassagethat______.A.YehyarecognizedthefatwomanasHatshepsut.B.ElizabethfoundHatshepsut’smummyfirst.C.HatshepsutmusthadbeenkilledbyTuthmosisIII.D.Hatshepsut’sdeathmayhadbeenamystery.
Treesareusefultomaninthreeveryimportantways:theyprovidehimwithwoodandotherproductstheygivehimshadeandtheyhelptopreventdroughtandfloods.Unfortunatelyinmanypartsoftheworldmanhasnotrealizedthatthethirdoftheseservicesisthemostimportant.InhiseagernesstodrawquickprofitfromthetreeshehascutthemdowninlargenumbersonlytofindthatwithoutthemhehaslostthebestfriendshehaD.TwothousandyearsagoarichandpowerfulcountrycutdownitstreestobuildwarshipswithwhichtogainitselfanempirE.Itgainedtheempirebutwithoutitstreesitssoilbecamehardandpoor.Whentheempirefelltopiecesthecountryfounditselffacedbyfloodsandstarvation.Eventhoughagovernmentrealizestheimportanceofaplentifulsupplyoftreesitisdifficultforittopersuadethevillagertoseethis.Thevillagerwantswoodtocookhisfoodwithandhecanearnmoneybymakingcharcoalorsellingwoodtothetownsman.Heisusuallytoolazyortoocarelesstoplantandlookaftertrees.Sounlessthegovernmenthasagoodsystemofcontrolorcaneducatethepeopletheforestswillslowlydisappear.Thisdoesnotonlymeanthatthevillagerssonsandgrandsonshavefewertrees.Theresultsareevenmoreserious.Forwheretherearetreestheirrootsbreakthesoilup―allowingtheraintosinkinandalsoholdthesoilthuspreventingitbeingwashedawayeasilybutwheretherearenotreesthesoilbecomeshardandpoor.Therainfallsonhardgroundandflowsawayonthesurfacecausingfloodsandcarryingawaywithittherichtopsoilinwhichcropsgrowsowell.Whenallthetopsoilisgonenothingremainsbutaworthlessdesert.63.Thepurposethatthewriterwrotethisarticleforis____.A.totellpeoplethattreesareveryusefultomanB.towarnpeoplenottocutdowntreesanymoreC.towarnthatmanmustn'tdestroyforestsanymoreD.toexplainhowtreeshelptopreventdroughtandfloods64.Inthewriter'sopinion____ortheforestsslowlydisappear.A.measuremustbetakenB.peopleshouldn'tdrawbenefitfromthetreeC.governmentmustrealizetheseriousresultsD.unlesstreesneverbecutdown65.Accordingtothearticleweknowitis____topreventtheforestsfromslowlydisappearing.A.necessarybutimpossibleB.necessarybutdifficultC.impossibleandunimportantD.difficultandimpossible66.Inthelasttwoparagraphsthewriterwantedtomakeitclearthat____.A.wheretherearenotreesthesoilbecomeshardandpoorB.wheretherearemanytreestherearefewerfloodsC.wheretherearenotreesthelandmightbecomedesertslowlyD.floodswillmakethelandbecomedesert
YellowstoneWeatherYellowstoneNationalParkisathighaltitude海拔.Mostoftheparkisabove7500feet2275meters.Yellowstone’sweatherisunpredictablE.Insummeritmaybewarmandsunnywithtemperaturesinthehigh70s.Atnightinanygivenmonththetemperaturemaydropclosetofreezing.Soitisbesttocomepreparedforcoldeveningsandmorningsespeciallyifyouarecampingorhiking.WhenyouleaveyourcampsitepleaseleaveitpreparedforpossiblethundershowersandwinD.Asunnywarmdaymaybecomefiercelystormywithwindrainsleetandsometimessnow.Withoutenoughclothinganeasydayhikeorboattripcanturnintoabattleforsurvival.SeasonalWeatherInformationSpringColdandsnowcontinueintoMayalthoughtemperaturesgraduallyclimb.Earlyinspringdaytimetemperaturesaverageinthe40sto50s;bylateMayandJunetheymayreachthe60sand70s.Nighttimelowsfallbelowfreezing.SummerDaytimetemperaturesareusuallyinthe70soccasionallyreachingthe80sinthelowerelevations高度.Nightsarecooltemperaturesmaydropinthe40sand30s--sometimeseventhe20s.Junecanbecoolandrainy;JulyandAugusttendtobesomewhatdrieralthoughafternoonthundershowersarecommon.FallWeathercanbepleasantalthoughtemperaturesaverage10--20degreeslowerthansummerreadings.Nighttimelowscanfallintotheteensandlower.Snowstormsincreaseinfrequencyastheweeksgobyortowardstheendofthefallseason.WinterTemperaturesoftenstaynearzerothroughoutthedayoccasionallyreachinghighinthe20s.Suhzeronighttimelowsarecommon.Annualsnowfallaveragesnearly150inchesinmostofthepark.Athigherplaces200--400inchesofsnowhavebeenrecordeD.64.Theauthorwritesthispassagemostprobablyforthosewhoplanto________inYellowstoneNationalPark.A.doresearchworkB.takeabusinesstripC.havesportsgamesD.spendtheirholidaysortakeatour65.WhichofthefollowingbestdescribesYellowstone’sweather?A.Yellowstone’sweatherisgenerallychangeableanditsnowsmostoftheyear.B.It’sneithertoohotinsummernortoocoldinwinter.C.Weatherinfallispleasantandtemperaturesneverfallbelowfreezing.D.It’sprettywarminthedayandverycoolatnightthroughouttheyear.66.IfyouareplanningtospendyourholidaysinYellowstoneNationalParkinsummerwhatshouldyoutakewithyou?A.JustsomelightclothingsuchasT-shirtsorskirts.B.Justsomewarmclothingsuchassweatersandcoats.C.Bothlightclothingandwarmclothing.D.Eitherlightclothingorwarmclothing.67.Whatdoestheunderlinedwordreadingsreferto?A.literatureworksB.booksC.announcementsD.figures
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