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The North and South poles are remote and freezing places that receive lots of animal visitors but fe...
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高中英语《2011年遵义考试试题及答案》真题及答案
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课文填空满分5分NewZealandisanislandthatlies86theeasternco
阅读短文根据短文内容从短文后的五个选项中选出能填入空白处的最佳选项选项中有一项为多余选项Thetwe
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阅读短文根据短文内容从短文后的五个选项中选出能填入空白处的最佳选项选项中有一项为多余选项Thetwe
阅读短文根据短文内容从短文后的五个选项中选出能填入空白处的最佳选项选项中有一项为多余选项Thetwe
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Anewcomputertreatmentisbeingusedtodealwithobesityinchildren.Connectedtoasmalldiningsetconsistingofscalesandaplateaminicomputerteacheschildrenhowtoeatandremindsthemwhentostop.Inveryfatpeoplehungersignalsfromthestomachtothebrainstopfunctioning.ButthenewcomputersystemteachesthechildrenhowtoreceivethesemessagesagainsaysDrJulianHamiltonShieldtheBristolUniversityseniorlecturerleadingthetreatmenttrials.ThecomputercalledaMandomerterrecordsandstorestheweightlossfromtheplatewhenchildreneat.Asthefoodisleavingtheplateacurve曲线图isproducedonthecomputerscreensuggestingwhetherthechildiseatingtooquickly.Childrenwithweightproblemsofteneattooquickly.Wewantthemtoeatsteadilyandslowlyandthesystemteachesthemtoslowdown.ItisabitlikeretrainingsaysHamiltonShielD.Obesitynowrepresentsoneofthemajorthreatstothefuturehealthofchildren.AboutoneinfiveboysandoneinfourgirlsagedtwotofifteeninEnglandareoverweight.Butsofarnotreatmentshaveproveneffectiveintreatingchildren.TheMandometerwasdevelopedinSwedenbutatpresentisexperiencingfurtherdevelopmentattheUniversityofBristolwith＄224400infundsfromBUPA-aglobalhealthandcareorganization.Thesystemcouldbeonthemarketintwoyears.Atfirstitwouldbemanagedbymedicalclinics.59.Thetextismainlywrittentoexplain________.A.howanewcomputertreatmentdealswithobesityinchildrenB.whychildobesitybecomesatopicofpeopleC.howtoloseweightwiththehelpofcomputersD.whyacomputeriseffectiveindealingwithchildrenobesity60.WhichofthefollowingisNOTtrueaccordingtothepassage?A.Thenewcomputersystemteacheschildrenhowtoeatandremindsthemwhentostop.B.HungersignalsfromthestomachtothebrainstopfunctioninginveryfatpeoplE.C.Childrenwithweightproblemsofteneattooquickly.D.TheMandometerrecordsandstorestheweightlossofchildrenwhentheyeat.61.Obesitythreatensthehealthofchildrenwhich________.A.hasbeensolvedbyacomputerB.isnothingcomparedwithotherdiseasesC.isveryseriousD.hasledtomanydeaths62.Whatcanwelearnfromthetext?A.TheMandometerwillbeputintomarketonceitproveseffectivE.B.TheMandometerischeapenoughforeveryfamilytoafforD.C.TheMandometerisstillnotperfect.D.Sloweatingissuretomakepeopleloseweight.
Althoughmenandwomenhavebeengrowingcropsforthousandsofyearstheyhavenotalwayshadenoughtoeat.Eventodaymanypeopleintheworldgohungryandevendieofhunger.Ifwearetogrowenoughforeverybodywehavetogrowmorecropsandbettercrops.Plantsneedtherightfoodinordertogrow.Inparticulartheyneedthreechemicalsubstances物质inthesoil:nitrogen氮phosphorus磷andpotassium钾.Theyalsoneedsmalleramountsofotherchemicalsubstanceslikecalcium.Ifthereistoolittleofanyofthesesubstancesinthesoilplantscan’tgrowwell.Whenaplantgrowsittakesupthesebasicsubstancesfromthesoilandbuildsthemintoitself.Ifweremovetheplantfromthesoilanduseitforfoodwearetakingsomeofthesesubstancesawayandthismeansthatfutureplantswillfindlessoftheminthesoil.Intimethesoilwouldbecometoopoorforplantstogrowinitatall.Topreventthiswemustputbasicsubstancesback.Onewayofdoingthisisputtingmanure肥料onthesoil.Thiscontainstheremainsofplantsthathavebeeneatenandifweaddittothesoilwearereturningsomeofthebasicsubstances.InEuropeandinJapanmanurefromanimalshasforlongbeenusedinthisway.UnfortunatelymuchoftheanimalwasteinIndiaisusedasfuelbecausethereisnotenoughwoodtoburn.Thismeansthereislessmanureforthecrops.Evenwhenweusemanurewecannotputbackintothesoilmoreofthebasicsubstancesthanhavebeentakenout.Oftenthesoildoesnothaveenoughoftheminthefirstplaceandsowemustprovideextrasupplies.Wecanusechemicalfertilizers化肥.ExperimentsinIndiahaveshownthatifweuseafertilizercontainingamixtureofnitrogenandphosphoruswegethalfasmuchriceagainfromthecropsonanyonepieceoflanD.72.Accordingtothepassagehowmanymethodsareintroducedtoimprovethesoil?A.OnE.B.Two.C.ThreE.D.Four.73.TheunderlinedwordthisinParagraph4referstothefactthat____________.A.thesoilwouldbecometoopoorforplantstogrowinitatallB.wearetakingsomesubstancesawayfromthesoilC.theplanttakesuptheseessentialsubstancesfromthesoilD.eventodaymanypeopleintheworldgohungry74.Tomakesurethatthesoilhasenoughbasicsubstancespeoplecan_____________.A.removeplantsfromthesoilB.providethesoilwithextrasuppliesC.plantasmanyplantsaspossibleD.stopplantinginthesoil75.Thepassageismainlyabout_____________.A.whymorefoodisneededB.howtogrowbettercropsC.thefactthatpeoplehavenotalwaysenoughtoeatD.theessentialsubstancesthatplantsneed
EversincehumanslivedontheearththeyhavemadeBSCofvariousformsofcommunication.Generallytheexpressionofthoughtsandfeelingshasbeenintheformoforalspeech.Whenthereisalanguagedifficultycommunicationiscardedoutthroughsignlanguageinwhichmovementsstandforletterswordsandideas.Touristsandthepeopleunabletohearorspeakhavehadtousethisformofexpression.Manyofthesesymbolsofwholewordsareveryvivid生动的andexactandcanbeusedinternationallyspellinghowevercannot.Bodylanguagepassesonideasorthoughtsbycertainactioneitheronpurposeornot.A.wink眨眼canbeawayofindicationthatthepartyisonlyjoking.A.nodmeansoneagreewhileshakingtheheadindicatesNo.OtherformsofnonlinguisticlanguagecanbefoundinBrailleasystemofraiseddotsreadwiththefingertipssignalflagsMorsecode莫尔斯电码andSmokesignals.RoadmapsandpicturesignsalsoguidewarnandinstructpeoplE.Whilelanguageisthemostcommonformofcommunicationothersystemandtechniquesalsoexpresshumanthoughtsandfeelings.48.Whichofthefollowingstatementsbestgivesthegeneralideaofthispassage?A.Whenthere’salanguagedifficultyonewillfindOtherformsofcommunication.B.EverybodyusesonlyoneformofcommunicationC.Nonlinguisticlanguageisinvaluableforforeigners.D.Althoughthereareotherformsapartfromlanguageofcommunicationtheyareoflittlevalue49.WhichofthefollowingstatementsisFalse?A.Therearemanyformsofcommunicationintheworldtoday.B.LanguageisthemostcommonformofCommunication.C.Touristsarenotabletousealloralformofcommunication.D.Ideasandthoughtscanbepassedonbybodylanguage.50.Whichformcouldbemostcommonlyusedamongblindpeople?A.Picturesigns.B.Braille.C.Bodylanguage.D.Sighnalflages51.Inthispassagethewordnonlinguisticineat2sinChinese.A.非语言的B.口语的C.手势D.语言的
Letusbeginbysayingwhatcausesourdreams.OurdreamsdonotcomefromanotherworlD.Theyarenotmessagesfromsomeoutsidesource.Theyarenotalookintothefutureeither.Allourdreamshavesomethingtodowithourfeelingsfearslongingswishesneedsandmemories.IfapersonishungryortiredorcoldhisdreamsmayincludeafeelingofthiskinD.Ifthecoversonyourbodysuchasaquiltorablankethaveslippedoffyourbedyoumaydreamthatyouaresleepingoniceorinsnow.Thematerialforthedreamyouwillhavetonightislikelytocomefromtheexperienceyouhavetoday.SothesubjectofyourdreamusuallycomesfromsomethingthathaseffectonyouwhileyouaresleepingfeelingofcoldanoiseadiscomfortetC.anditmayalsouseyourpastexperiencesandthewishesandtheinterestsyouhavenow.Thisiswhychildrenarelikelytodreamoffairiesolderchildrenofschoolexaminationshungrypeopleoffoodhome-sicksoldiersoftheirfamiliesandprisonersoffreedom.Toshowyouhowthisishappeningwhileyouareasleepandhowyourneedsandwishescanallbejoinedtogetherinadreamhereisthestoryoftheexperiment.A.manwasasleepandthebackofhishandwasrubbedwithapieceofsoftcotton.Hewoulddreamhewasinhospitalandhischarminggirlfriendwasvisitinghimsittingonthebedandfeelinggentlyhishands!Therearesomescientistswhohavemadeaspecialstudyofwhywedreamwhatwedreamandwhatthosedreamsmean.Theirexplanationofdreamsthoughabitreasonableisnotacceptedbyeveryonebutitoffersaninterestingapproachtotheproblem.TheybelievethatdreamsaremostlyexpressionsofwishesthatdidnotcometruE.Inotherwordsdreamingisawayofhavingyourwishescarriedout.46.Fromthepassageweknowthatourdreams.A.areimaginationofourdailylifeB.areman’scuriouslookintothefutureC.havenothingtodowithourfeelingsD.aretosomedegreeconnectedwithourfeelings47.Inyourdreamwhenyoufeellikeeatingsomethingitindicates暗示that.A.youareinastateofbeingcoldB.youareinastateofbeingtiredC.youareinastateofhungerD.youshouldhavehadyourdinnerthatday48.Olderchildrenoftendreamofexaminationsprobablybecause.A.theyareinterestedinexamsB.theyareoftenworriedabouttheirstudiesC.theyhopeforbetterlifeD.theyshowmuchinterestintheirstudies49.Somescientists’explanationofdreams.A.isnotwidelyacceptedthoughabitreasonableB.givesanexactdescriptionofourlifeC.providesuswithinformationofdreamsD.isofnouseforus
LegendhasitthatsometimetowardtheendoftheCivilWar1861-1865agovernmenttraincarryingoxenwascaughtinasnowstormandhadtobeabandoneD.Thedriverreturnedthenextspringtoseewhathadbecomeofhiscargo.Insteadoftheskeletonshehadexpectedtofindhesawhisoxenlivingfatandhealthy.Howhadtheysurvived?TheanswerlayinaresourcethatunknowingAmericanshadtrampled践踏underfootintheirhaste匆忙tocrosstheGreatAmericanDeserttoreachlandsthatsometimesprovedbarren.IntheeasternpartsoftheUnitedStatesthepreferredgrassforforage草料wasacultivatedplant.ItgrewwellwithenoughrainthenwhencutandstoreditwouldcureandbecomenourishinghayforwinterfeeD.Butinthedrygrazinglandsofthewestthatfamiliarbluejointgrasswasoftenkilledbydrought.Toraisecattleoutthereseemedriskyorevenhopeless.Whocouldimagineafairy-talegrassthatrequirednorainandsomehowmadeitpossibleforcattletofeedthemselvesallwinter?Butthesurprisingwesternwildgrassesdidjustthat.Theyhadwonderfullyconvenientfeaturesthatmadethemsuperiortothecultivatedeasterngrasses.Variouslyknownasbuffalograssnotonlyweretheyimmunetodroughtbuttheywereactuallypreservedbythelackofsummerandautumnrains.Theywerenotjuicylikethecultivatedeasterngrassesbuthadshorthardstems.AndtheydidnotneedtobecuredinabarnbutdriedrightwheretheygrewonthegrounD.Whentheydriedinthiswaytheyremainednaturallysweetandnourishingthroughthewinter.Cattleleftoutdoorstofendforthemselvesthrivedonthishay.Andthecattlethemselveshelpedplantthefreshgrassyearafteryearfortheytrampledthenaturalseedsfirmlyintothesoiltobewateredbythemeltingsnowsofwinterandtheoccasionalrainsofspring.Thedrysummeraircuredthemmuchasstoringinabarncuredthecultivatedgrasses.87.Whatdoesthepassagemainlydiscuss?A.WesternmigrationaftertheCivilWar.B.TheraisingofcattlE.C.TheclimateofthewesternUnitedStates.D.A.typeofwildvegetation.88.Whatcanweinferfromthecultivatedgrassesmentionedinthesecondparagraph?A.CattleraisedinthewesternUnitedStatesrefusedtoeatit.B.ThosefromtheeasternpartswouldnotgrowwellinthewesternUnitedStates.C.ThosehadtobeimportedintotheUnitedStates.D.Itwasdifficultforcattletodigest.89.WhichofthefollowingwasNOTmentionedasacharacteristicofwesterngrasses?A.Theyhavetoughstems.B.Theyarenotaffectedbydryweather.C.TheycontainlittlemoisturE.D.Theycanbegrownindoors.90.Accordingtothepassagethecattlehelpedpromotethegrowthofthewildgrassesby________.A.steppingonandpressingtheseedsintothegroundB.naturallyfertilizingthesoilC.continuallymovingfromonegrazingareatoanotherD.eatingonlysmallquantitiesofgrass
Womenwithanhourglassfigurehavebrainstogowiththeircurves曲线scientistsclaim.Goinginatthewaistissaidtobeasignofintelligencewhichleadstobrighterchildrentoo.WomensuchasNigellaLawsonwithabigdifferencebetweentheirwaistandhipmeasurementsscoredsingificantlybetterinteststhanthosewiththinnerstraighterframes.Researchersconcludedthatitwasnotnecessaryforawomantobeskinny―whatmatteredisthatherwaistshouldbesmallerthanherhips.A.ratioof3:5wasfoundtobeideal.ThestudybytheUniversitiesofPittsburghandCalifrniainvolved16000womenandgirls.AccordingtothescientiststheresultsarenomerequirkofnaturE.Theyclaimthatthefataroundcurvyhipsandthighs大腿holdshigherlevelsof-3fattyacidswhichareessentialforthegrowthofthebrainduringpregnancy怀孕.Thefatwhichcollectsaroundthewaisthoweverismorelikelytocontain-6fattyacidswhicharelesssuitedtobraingrowth.ReportinginthejournalEvolutionanHumanBehaviourtheresearchersfoundthatthechildrenofcurvymothersaremorelikelytodowellincognitiveteststhanothers.Theyclaimthatthiscouldhelpexplainwhythechildrenofteenagemothers―whomightnotyetbephysicallymatureenoughtohavedevelopedrealcurves―tendtodolesswellinschool.Aswellasboosting提升brainpower－3fattyacidsfoundinoilyfishareconsideredtobeofhugehealthbenefit.Althougthestudyanalysedwomen’sbodiesonly－3fattyacidsarealsostoredinmen’ships.Howeveritisnotknownwhethermenwithwidehipsbenefitfromthesamebrainpowerboost.72.Whichshowsthepossibleshapeofanhourglass?A.B.C.D.73.Supposethefollowingmeasurementsaretakenfromfourwomen.Whichofthemismorelikelytohavebrightchildren?A.Waist60cmHip100cmB.Waist60cmHip80cmC.Waist55cmHip60cmD.Waist120cmHip110cm74.Theunderlinedsentencetheresultsarenomerequirkofnaturepossiblytellsustheresults.A.canbeexplainedscientificallyB.arestrangeandhardtoexplainC.havejustcomeaboutbychanceD.areveryinteresting75.Accordingtotheresearchersteenagemotherstendtohavelessbrightchildrenbecause.A.theyaren’tsogoodatchildcareB.theyusuallyhavelessfatthanmaturewomenC.theyaren’tphysicallystrongenoughD.theirwaistandhipmeasurementsdifferless
HaveyoueverdreamedofvisitingaplanetintheMilkWay银河系Whilethetripsoundsexcitingitwouldtakeyearsandyearstoreachyourdestination.Sointhefuturebedtimeforastronautsmaybemorethanafewhoursofregularshut-eyE.Theywouldhavetosleepforyears.Europeanresearchersarenowconductinghibernation冬眠experiments.Thestudymayhelpthemunderstandwhetherhumanscouldeversleepthroughtheyearsitwouldtakeforaspaceflighttodistantplanets.Iftherewasaneffectivetechnologyitcouldmakedeep-spacetravelarealitysaidMarkAyreoftheEuropeanSpaceAgencylastmonth.Whatseemslikesciencefictionisnotcompletelyunlikely.Researchershavebeenabletousechemicalstoputlivingcellsintoasleep-likestatE.Theyhavenowmovedontosmallnon-hibernatingmammalslikerats.Amajorchallengeisthefactthatcellscanbeverysimplesystemswhereasbodyorgansarefarmorecomplex.It’slikemovingfromasimpleApplecomputertoasupercomputersaidMarcoBiggiogeraahibernationresearcheratItaly’sUniversityofPavia.Justlikebearsandfrogsthehibernationofhumanbeingswouldcauseaperson’smetabolism新陈代谢tolowersotheywouldneedlessenergy.Medicalresearchhoweverisjusthalfofaspaceflighthibernationsystem.Thereisthechallengeofdesigningasuitableprotectiveshelter栖身所.SuchashelterwouldprovidetheproperenvironmentforhibernationsuchasthepropertemperatureItwouldalsohavetomonitor监控lifefunctionsandservethephysiologicalneedsofthehibernator.AccordingtoAyrethesix-personhumanOuterPlanetsExplorationMissiontojupiter’smoon木星的卫星Callistocouldbeanopportunitytousehumanhibernation.Themissionaimstosendsixhumansonafive-yearflighttoCallistowheretheywillspend30daysin2045.54.Accordingtothearticlethehibernationresearch________.A.isjustanideaB.isalwaysasciencefictionC.hasalreadyfinishedsuccessfullyD.hasmadesomeprogress55.Thereare________majorchallengesfacingscientistswhostudyhibernation.A.twoB.threeC.fourD.five56.Thefirstuseofthehibernationtechnology________thesix-personhumanOuterPlanetsExplorationMissiontojupiter’smoonCallisto.A.mustheB.hasbeenplannedforC.iscertaintobeD.maybe57.Whatisthebesttitleforthearticle?A.HibernationStudyforSpaceTravelB.WelcometoOurSpaceTravelC.ToHibernatetoLiveLongerD.WelcometoMilkWay
CanstormsinAfricacauseasthma哮喘intheCaribbean加勒比?Islanderspointtothedesertinsectsthatlandonbeachesaftera5000-kilometerflightacrosstheAtlantiC.IftheycanusewindstogetfromonecontinenttoanothersocancloudsofdustthatcarrydiseasE.ScientiststhinkthatasAfricabecomesdrierdustfromexpandingdesertsisbeingblownawayintoCaribbeanislands.A.studyinBarbadosshowsthatasthmahasincreased17timessinceAfrica’sdrought干旱beganin1973.Otherformsoflifearesufferingtoo.AmongthemaretheCaribbean’sfamouscoralreefs珊瑚礁whichbegandyinginlargenumbersinthe1900s.EugeneShinnoftheU.S.GeiologicalSudrveyUSGSinFloridawenttothevirginIslandstostudythereefs.ThetestsheandhiscolleaguescarriedoutshowedthatthecoralwasdyingofdiseasecausedbyAfricamicrobes微生物fromacrosstheocean.WilliamSpriggoftheUniversityofArizonaisstudyingtheproblemaspartofamajorUNproject.HesaysthatdustiscausingproblemsintheU.S.too.Wearejustbeginningtocollecttheevidenceofairborne空气传播的dustinfluencesonhumanhealthhetoldTheWashingtonPost.61.Whichofthefollowingcanbethebesttitleforthispassage?A.DangerousDustB.DangerousDiseaseC.ChangingWeatherD.DevelopingTechnology62.Wheredoesthedusttalkedaboutinthispassagecomefrom?A.AmericA.B.AfricA.C.TheAtlantiC.D.ThePacifiC.63.TheincreaseofasthmaintheCaribeanisprobablyrelatedto_____accordingtoscientists.A.desertinsectsB.strongwindsC.airbornedustD.dryweather64.WhichofthefollowingisNOTtrueabouttheCaribbeancoralreefs?A.TheyareinFlorida.B.Theyusedtobeverybeautiful.C.Theybegandyinginthepastdecades.D.TheAfricanmicrobeshavebadeffectonthem.65.WhichofthefollowingisTRUEaboutWilliamSprigg?A.HeisamemberofUN.B.HethinksAfricandustalsoaffectstheUS.C.Hehascollectedenoughevidenceaboutdustinfluences.D.HeisareporterfromTheWashingtonPost.
DamagetoOzonelayerGetsWorseInthemiddleofwinterwhensnowisfallinginmanypartsoftheUnitedStatesscientistshavesoundedawarningtopeoplewhoplantospendmanyhoursinthesunthissummer.Thewarningis:Thesun’ssummertimerays光线aremoredangerousthanoncethought.Ateamofscientistsfrom80nationsrecentlyreportedtotheUnitedNationsthatalayer层ofozone臭氧层intheatmospherewhichprotectshumansfromharmfullevelsofultraviolet紫外线radiationwillbethinnerovertheUnitedStatesthissummer.ThethinnerlayerallowsmoreultravioletraysfromthesuntoreachEarth.Theextraamountofultravioletradiationcouldcauseanincreaseinthenumberofcasesofskincancer.Scientistsfirstbecameconcernedabouttheozonelayerinthemid-1980swhenaholewasdiscoveredinthelayeraboveAntarcticaduringthewinter.Theholewascausedbychemicalsusedinrefrigeratorsandairconditioners.WhenthesechemicalsaresentoutintotheatmospheretheyproducegasesthatdestroytheozonE.Concernabouttheprotectiveozonelayerrosemorerecentlywhendata数据fromsatellitesandgroundstationsshowedthatozonelevelsweredroppingoverareasotherthanAntarcticA.LowozonelevelswererecordedinthespringandsummerovertheUnitedStatesandoverotherpopulatedareasintheworlD.Althoughmanycountrieshavealreadybegunstoppingtheuseofozonedestroyingchemicalsthenewfindingsareexpectedtoadvancethetimetableforatotalban禁止ofthechemicals.41.Thescientistshaveobservedtheozonelayer_____.A.since1980B.sincelastwinterC.forabout30yearsD.foraboutoneyear42.Theozonelayerintheatmospherecan_____.A.doalotofgoodtohumanbeingsinmanywaysB.protecthumansfromdiseasescausedbybadweatherC.doalotofharmtohumanbeingsinthesummer-timeD.protecthumansfromharmfullevelsofultravioletradiation43.Scientistsfirstfoundthattherewasaholeintheozonelayer_____.A.aboveArcticduringthewinterinthemid-1980sB.aboveAntarcticaduringthewinterinthemid-1980sC.oversomewhereinthenorthoftheequatorin1980D.overtheU.S.Ainthesummertimeinthemid-1980s44.Thedamagetotheozonelayerwascausedby_____.A.thechangeableweatherB.ozone-destroyingchemicalsC.chemicalsfromrefrigeratorsD.chemicalsfromairconditioners
TheexplorationofspacehasbeenimportantinAmerican’shistory.AmericanastronautshavewalkedonthemoonlivedontheMirspacestationandorbitedtheearthmanytimesinthespaceshuttlE.DateProgramCrewDetails5/5/61MercuryRedstoneShepard1stAmericaninspace12/21/68ApolloSaturn8BormanLovellAnders1stlunar月球的orbit;viewsoflunarsurfacetelevisedtoEarth7/26/71ApolloSaturn15ScottIrwinWorden4thmoonlanding1stlunarrover飞行器use5/14-11/16/73Skylab1234ConradKervinWeitzetC.1stU.S.spacestation4/12/81ColumbiaYoungCrippen1stspaceshuttleflight1/28/86Challenger.ScobeeSmithResniketC.Explodedaftertakeoff4/24/90DiscoveryMcCandlessSullivanShriveretcLaunchedHubbleSpaceTelescopewhichsendspicturesofspacetoEarth6/27/95AtlantisGibsonPrecourtBakeretC.ExchangedcrewmemberswithMir7/23/99ColumbiaCollinsAshbyHawleyetC.Collinswas1stwomantocommandaspaceshuttle;deployed展开部署ChandraX-rayObservatorytelescope6/21/04SpaceShipOneMelvill1stprivatelyfundedmannedspaceflight68.What’stheformmainlyabout?A.Theexplorationofspaceshuttles.B.LifeofAmericanastronautsinspacE.C.ThemoonlandingofAmericanastronauts.D.MemorablemomentsinAmericanspaceflight.69.Whenwasthefirstorbitofthemoon?A.1961B.1968C.1971D.197370.Whomadethefirstprivatespaceflight?A.MelvillB.GibsonC.McCandlessD.Scobbe71.Whichpartistheformprobablytakenfrom?A.TraditionB.TechnologyC.GeographyD.History
SavetheAnimalsAnimalsarenaturalresources资源thatpeoplehavewastedallthroughourhistory.Animalshavebeenkilledfortheirfurandfeathersforfoodforsportandsimplybecausetheywereintheway.Thousandsofkindsofanimalshavedisappearedfromtheearthforever.Hundredsmoreareonthedangerlisttoday.About170kindsintheUnitedStatesaloneareconsideredindanger.Whyshouldpeoplecare?Becauseweneedanimals.AndbecauseoncetheyaregonetherewillneverbeanymorE.Animalsaremorethanjustbeautifulorinteresting.TheyaremorethanjustasourceoffooD.EveryanimalhasitsplaceinthebalanceofnaturE.Destroyingonekindofanimalcancreatemanyproblems.Forexamplewhenfarmerskilledlargenumbersofhawks鹰thefarmers’storesofcornandgrainweredestroyedbyratsandmicE.Why?BecausehawkseatratsandmicE.Withnohawkstokeepdowntheirnumberstheratsandmicemultiplied繁殖quickly.Luckilysomepeopleareworkingtohelpsavetheanimals.Somegroupsraisemoneytoletpeopleknowabouttheproblem.Andtheytrytogetthegovernmentstopasslawsprotectinganimalsindanger.Quiteafewcountrieshavepassedlaws.Theselawsforbid禁止thekillingofanyanimalorplantonthedangerlist.Slowlythenumberofsomeanimalsindangerisgrowing.56.Animalsareimportanttousmainlybecause__________.A.theygiveusasourceoffoodB.theyarebeautifulandlovelyC.theykeepthebalanceofnatureD.theygiveusalotofpleasure57.Whathashappenedtotheanimalsontheearth?A.About170kindsofanimalshavedisappearedforever.B.Thousandsofkindsofanimalsaregoneforever.C.A.fewkindsofanimalshavediedout.D.Allkindsofanimalsareindanger.58.Whydopeoplekillanimals?A.TheykillanimalsforsomethingtheyneeD.B.Theykillanimalstoraisesomemoney.C.Animalsdestroytheirnaturalresources.D.Animalscreatemanyproblems.59.WhichofthefollowingisNOTTRUE?A.Peoplecaremuchaboutanimalsbecausetheyneedthem.B.Killingallratsandmicemaycausesomenewproblems.C.OnceacertainkindofanimalisgoneforevertherewillneverbeanymorE.D.Peoplemustnotkillanyanimalorplant.60.Whatcanweconcludefromthefactthatquiteafewcountrieshavepassedlawsprotectinganimalsindanger?A.AnimalsindangerwillbekeptawayfrompeoplE.B.AnimalsindangerwillnotbekilledanymorE.C.ThenumberofsomeanimalsindangerwillincreasE.D.Everypersonwillknowtheimportanceofprotectingwildanimals.
Nothinglivesforever.Isthatright?Wrong.ItseemshardtobelievethattherearesomeanimalsthatdonotdiE.TheyareverysimplecreaturestoosmalltobeseenwithoutthehelpofamicroscopE.WhilemostanimalsincludinghumanbeingshavebillionsofcellsintheirbodiestheselittledeathdefiershaveonlyonE.Eachcelllivesforacertainlengthoftimeandthenitsplitstoformtwonewanimals.Theadultanimalturnitselfintotwobabies.AllofthenewcellsfinallydividebutnonedieunlesstheyarekilledbyaccidentordiseasE.ThereareothercellsthatavoidbeingolD.Cellsfromoldmicehavebeenmovedintoyoungmiceoverandoveragaineachtimethebodytheyareinwearsout.Intheirnewbodiestheoldcellsseemtobeginlifeoveragain.Theydivideandgrowjustlikeyoungcells.Isthereanywaytodiscoverthesecretofthesecells’youthandapplyittohumanbeing?Notyet.Butscientistsarestillsearchingandtheymaybecloserthanevertofindingananswer.Ofcoursesomewaystoincreaseourchanceoflivinglonger.Likegoodfoodandexercisehavebeenknownforyears.Progressagainstkillerdiseasehasalreadyraisedthehumanlifetomorethanseventyyearscomparedwithlessthanfiftyyearsacenturyago.Nowscientistsarestudyingotherwaystofightagainstdeath.Theywillnevergiveuptheireffortsuntiltheywintheirfinalsuccess.68.Whatisthepassagemainlyabout?A.ThelawgoverningthegrowthofallcreaturesB.ThesecretofgettingoldC.WaystobeginlifeoveragainD.Certaincellsthatneverdie69.Whatdoesthephrasedeathdefiersreferto?A.AnimalsthatfearnothingB.Cellsthatcan’tbeunderstoodC.Animalsthatdon’tdieD.Cellsthatfinallydieinanormalway70.Scientistsareinterestedintheseone-cellanimalsbecausetheywantto.A.findouthowthesetinyanimalsfightagainstdiseasesB.discovertherelationsbetweenhumanbodiesandtheseanimalsC.learnhowthesecellscansplitintonewcellsD.lookforwaysofkeepinghumanlifemuchlonger71.Whatisthewriter’sattitudetowardsthepossibilityforhumanbeingstolivelonger?A.ConfidentB.DoubtfulC.UncertainD.Respectful
ItisnotalwayseasytounderstandinventionsandnewdevelopmentsinsciencE.Tounderstandfiberoptics光纤howeveryoucantryanexperiment.Putadroportwoofmilkintotheglassofwater.Turnoffthelights.Shinethelightfromyourflashlight手电筒throughthetopoftheglassatanangle角度ofabout45degrees.Putapieceofwhitepaperagainsttheglasswhenthebeam光束oflightisshining.Movethepapersoyoucanseewherethebeamiscomingoutoftheglass.Youshouldseeaspotoflight.Someofthelighthaspassedthroughthewaterandthroughtheglass.Youseeitonthepaper.Youalsoseeanotherbeamgoingdownintotheglass.Itisbeingreflecteddownintotheglass.Nextmovetheflashlightsothatthebeamiscomingstraighterdown30degreesintothewater.Youwillseethesamephenomenon:someofthelightisreflectedbackintotheglass.Andsomeescapesout.Nowmovethebeamoflightfromtheflashlightslowlyupuntilyoucannotseeanylightescaping.Thispointiscalledthepointoftotalinternalreflection.ThewordinternalmeansinsidE.Allthelightisstayinginsidetheglass.Thereisnobeamshowingabrightspotonthewhitepaper.Allthelightenergyisinsidetheglass.Theglassofmilkywaterislikeastrand线ofglass.A.fiberoptictubeisabundleoflongthinstrandsofglassreallymanytubes.Howevertheprinciple原理isthesame:atacertainangleallthelightenergythatgoesintotheglassfibercomesouttheotherenD.Lightisenergy.Soundisenergy.Radiowavesandelectricityarebothenergy.Theycanallbechangedintolightandaslighttheycanalltravelalongaglassfiber.Lighttravelsattherateof186000milesperseconD.Thereforeamessagecantravelthatfastinaglassfiber.Thisistheprincipleorlawofnaturethatmakesfiberopticswork.59.Whichfigureshowsthelaststepoftheexperiment?60.Thepurposeoftheexperimentistotellus.A.howfastlighttravelsB.howfiberopticsworksC.howlighttravelsinaglassofwaterD.howfiberopticshelpsmankind61.IntheexperimentmakesthebiggestdifferencE.A.theangelatwhichtoshinethelightfromtheflashlightB.theamountofwaterintheglassofmilkC.thenumberofdropsofmilktopourintotheglassofwaterD.thesizeoftheholethroughwhichtoshinelightfromtheflashlight62.Thelaststepistoprove.A.nobeamisshownonthewhitepaperB.nolightcanbenoticedinsidetheglassC.noreflectioncanbeseenD.noenergyiswasted63.Whichofthefollowingcanbethebesttitle?A.ExperimentofLightTravelB.PrinciplesofFiberOpticsC.CommunicationonFiberOpticsD.TheoryofLightTravel
A1.6-metertallrobotmaysoonbecomethebestfriendforlonelyelderlypeopleasChinesescientistsaremakingthefinalsprint冲刺towarditsmarketlaunch投放saidaseniorresearcherontherobotprojectonSaturday.WeareworkingontestingtheexactfunctionsandwaystoreducethecostinpreparationsforanexpectedmarketlaunchoftherobotintwotothreeyearssaidLiRuifengamemberoftheproject.Hesaidtheteamhopedtoreducethecostsothattherobotcanbepricedat30000to50000yuanwhichisexpectedtobeanaffordablepriceformostofChina’sbetter-offfamilies.Therobothasbeendevelopedwiththefunctionsoffetchingfoodmedicinesoundingalarmsincaseofwaterorgasleakagesendingtextsorvideoimagesviawirelesscommunicationsandevensingingasongorplayingchesstoentertainitsmasters.LisaidthattherobotdevelopedindependentlyinChinahastechnologyatthesamelevelasthoseinwesternlabs.Chinasetabouttheresearchoftherobotin2007whenitwaslistedasanationalkeyproject.Itisbackedbygovernmentfunding拨款.Chinahastheworld’slargestelderlypopulationwith159millionpeopleover60accountingfor12percentofitstotalpopulation.AccordingtoasurveybytheMinistryofCivilAffairsmorethan10millioncaregiversandnursesareneededtoattendtheelderlypopulationasmostofChineseelderlyprefertolivetheirretiredlivesathomE.61.Thepassagemainlytalkedabout.A.theproblemsofChineseelderlypopulationB.theadvantagesoftheRobotcaregiversC.robotcaregiversfortheelderlytoliltmarketD.thegovernment’sattentiontotheelderly62.Theunderlinedwordbackedinthelastparagraphmeans.A.supportedB.suggestedC.controlledD.stopped63.Fromthelastparagraphweknowthat.A.ourgovernmentpaysnoattentiontotheelderlypeopleB.Chinahastheworld’slargestelderlypopulationC.ChineseelderlypeopleprefertobelookedafterbyrobotcaregiversD.robotsarethebestfriendsforthelonelyelderlypeople64.Whichofthefollowingistrueaccordingtothepassage?A.Robotcaregiverswillappearinthemarketin2or3years.B.Robotcaregiverscanhelpelderlypeopledoeverything.C.Therobotneedssometechnologyfromwesternlabs.D.TherobotisexpectedtobeboughtbyeverypeoplE.65.Theauthorwrotethepassageto.A.advertisearobotcaregivertotheelderlyB.tellChinaelderlynottoworryabouttheirlifeC.explainhowrobotcaregiversworkinthefutureD.introduceanewly-developedrobotcaregiver
Lifeisspeedingup.Everyoneisgettingunwell.Thismaysoundlikesomethingsomeonewouldsaytoday.ButinfactanunknowncitizenwholivedinRomeinAD53wroteit.Wealllovenewinventions.Theyareexcitingamazingandcanevenchangeourlives.Buthaveallthesedevelopmentsreallyimprovedthequalityofourlives?Picturethis:You’rerushingtofinishyourhomeworkonthecomputer.YourmobilephoneringsaQQmessagefromyourfriendappearsonthescreenandthenoisefromthetelevisionisgettinglouderandlouder.Suddenlythecomputergoesblankandyouloseallyourwork.NowyouhavetostayupallnighttogetitdonE.Howcalmandhappydoyoufeel?InventionshavespeededupourlivessomuchthattheyoftenleaveusfeelingstressedandtireD.Whydoyouthinkpeoplewholivefarawayfromnoisycitieswhohavenotelephonesnocarsnotevenanyelectricityoftenseemtobehappier?Perhapsbecausetheyleadsimplelives.OurfamilyintheUKwentbackintimetoseewhatlifewaslikewithoutalltheinventionswehavetoday.ThegrandparentswiththeirdaughterandgrandsonsBenjamin10andThomas7spentnineweeksina1940shousE.Theyhadnowashingmachinemicrowavecomputerormobilephones.ThegrandmotherLynsaidItwashardphysicallybutnotmentally.ShebelievedlifewaslessmaterialistiC.ThemorethingsyouhavethemoredifficultlifebecomesshesaiD.Theboyssaidtheyfoughtless.Probablytheysaidbecausetherewaslesstofightoversuchastheircomputer.AlsoLynchangedfrombeingafashionablebeer-drinkinggrannytoonewhocookedthings.Herearesomesimplewaystobeatthestressoftencausedbyourinventions!Don’tbeavailableallthetimE.Turnoffyourmobilephoneatcertaintimesoftheday.Don’tcheckyouremailseveryday.Makesureyouspendsometimetalkingtoyourfamily.Setasideoneeveningaweekwhenyoudon’tturnonthetelevision.PlaycardsandchatinsteaD.Getalow-techhobby.Everydaydosomethingintheold-fashionedwaysuchaswalkingtohaveaface-to-facemeetinginsteadofusingtheemailortelephonE.Don’tworrytoomuchaboutlife―laughmorE.68.Thepassageismainlyabout______.A.theimportantrolestechnologyplaysinoureverydaylifeB.improvementsofourlifewithtechnologyC.problemswithtechnologyD.majorchangeswhichwillbelikelytohappentotechnology69.Thewriterusesthequote引文atthebeginningofthestoryto______.A.shareatruthaboutlifeB.telluswhatlifewaslikelongtimeagoC.pointoutthatyouexperiencesomebigproblemsandtheymaybethesameD.makeuswonderwhatcausessuchathingtohappen70.Whydidthefamilychoosetospendsometimeina1940shouse?A.Becausetheylovedtolivesimplelives.B.Becausetheywerecuriousabouthowpeoplelivedwithoutmoderninventions.C.Becausetheyweretroubledbymoderninventions.D.Becauselivingadifferenttimewouldbealotoffunforthem.71.Whatdoyouthinktheunderlinedwordavailableinthe1stsuggestionofferedbythewritermeans?A.Busy.B.FreE.C.UsablE.D.Foundbyothers.
Raisingababytakesalotofworkespeciallywhenthatbabyisakingpenguin.Nowitlookslikeclimatechangewillmakelifeevenharderforthesebirds.A.newstudysuggeststhatwarmerwaterscouldmaketheirnumbersdwindlE.MostkingpenguinsliveontheCrozetArchipelagoagroupofislandsintheIndianOceanabout1000milesnorthofAntarcticA.AfterthepenguinchicksareborninNovemberwhichissummerintheSouthernHemispherebothparentsspend4monthscollectingfishtofeedtheirchildren.WhenthefishmovetodeeperwatersinMarchtheadultsleavetheirchicksaloneformonths.Theyswimhundredsofmilessouth.ThereneartheAntarcticicetheyspendthewintereatingseafoodsuchassquidtoaddtheirownenergystores.InOctobernearlyayearaftertheirchicksareborntheparentsreturntofeedandfinishraisingthem.ScientistsfromtheFrenchNationalCenterforScientificResearchCNRSinStrasbourgFrancehavebeenstudyingkingpenguinsontheCrozetArchipelagoforadecadE.Startingin1998YvonLeMahoandotherresearchersimplantedelectronicIDtagsundertheskinofhundredsofpenguins.ThetagshaveallowedLeMaho’steamtoknowthedetailsaboutthemsuchashowlongtheylivewhethertheyreturnfromtheirwintertripsandiftheirchicksmanagetosurvivethewinter.Oceansurfacetemperaturesvaryfromyeartoyear.Andformerresearchhadshownthatfewersquidfishandothercreaturesgrowwhenthewateriswarmer.LeMahosuspectedthatthisdropinthefoodsupplywouldmakeitharderforadultpenguinstosurvivethetoughtimesaheaD.Kingpenguinscanliveforupto30years.Andfornowthepopulationstillappearshealthy.ButawarmingtrendcouldcausebigtroubleforabirdthatdependsoncoldandicE.52.What’sthemainideaofthispassage?A.OceanwarmingmaythreatenkingpenguinsB.TheCrozetArchipelagoistheworldofkingpenguinsC.ScientistssupporttheprotectionofkingpenguinsD.Kingpenguins’habitatisingreatdanger53.Inthefirstparagraphtheunderlinedworddwindleprobablymeans______.A.doubleB.increaseC.vanishD.decrease54.Accordingtothepassagetheadultpenguinsspendthewintersouthbecause______.A.TheyhavetoraisetheirchildrenthereB.theyhavetoraisetheirchicksthereC.thefoodsupplytheyneedexiststhereD.theyhavetogivebirthtochicksthere55.Fromthethirdparagraphwecanknow______.A.scientistshavebeenstudyingthepenguinsinAntarcticaforadecadeB.theIDtagsarejustlikerecorderstokeepintheinformationaboutpenguinsC.LeMahostartedthescientificteaminFranceD.Aboutonehundredpenguinsareinvolvedintheresearch
RescueworkersandvolunteersinFloridaworkednon-stoptohelpasmanydolphinsastheycouldtoreturntodeepwater.Somedolphinsmadeit.About24dieD.For35dolphinsindangertherewasonlyonechanceforsurvival―tobesenttotheMarineMammalsCareCentrE.Thedolphinswereplacedinawaterpoolwheretheyhavebeengivencareroundtheclockbyhundredsofvolunteerswhosignedupforfour-hourshifts轮班.BythesecondweekinAprilonly11oftheoriginal35werestillalivE.Eachyearthousandsofdolphinsthelovelymarinemammalsarefoundbeachedorstranded使搁浅alongcoastlinesaroundtheworlD.Theycan’tgetbacktotheseaandwilldieiftheydon’tgethelpaccordingtotheWhaleandDolphinConservationSociety’swebsitE.NobodyknowswhatcausedthedolphinstostrandthemselvesbuttheUSNavyandmarinewildlifeexpertsareinvestigatingwhetherthedolphinstrandingwascausedbysonar声纳exercisesofships.Andsomescientistssuggestdiseaseorhumaninterference干扰.Thereasonforstrandingisn’tcompletelyunderstooD.InthepoolvolunteersholdthedolphinsandkeeptheirblowholesoutofthewatersotheycanbreathE.A.vetinjectsthemammalswithvitaminE.tohelpwithmusclecramping抽筋.Unabletoeatontheirowntheyarefittedwithafeedingtubetogetthemtheneedednutrition.TodaywemadethefirststepsingettingthemtoeatdeadfishandtoeatthemoutofourhandsBanicksaiD.It’saraceagainsttimeandfeedingtimesmustbestrictlykeptto.45.ThedolphinsstrandedonthebeachweresenttotheMarineMammalsCareCentrewhere________.A.theywerewarmlywelcomedB.theyweretakencareofandcuredC.theyweretobetrainedD.theywouldlivewithhumanbeings46.HowmanydolphinshaddiedbythesecondweekinApril?A.11.B.24.C.35.D.4647.Accordingtothewriterwhatcausedthestrandingofdolphins?A.HumaninterferencE.B.Sonarexercisesofships.C.Somediseaseofmarinemammals.D.Thecauseisunknown.48.Whatdoestheunderlinedphraseroundtheclockmostprobablymean?A.Asaccurately精准asaclock.B.Dayandnight.C.Fastwithoutdelay.D.IntimE.49.Whatwouldbethebesttitleforthispassage?A.VolunteersSigningUpforCareofDolphins.B.DolphinsStrandedonShores.C.RaceagainstTimetosaveDolphins.D.ReasonsforDolphinstoStrandThemselves.
ItwasadarkNovemberdayin1895.InalaboratoryattheroyalUniversityofWurzburginwesternGermanya50-year-oldphysicsprofessorWilhelmRoentgenperformedwhatlookedlikeatypeofmagiC.Heplacedaglassvacuum真空tubeinsideablackcardboardboxandappliedahigh-voltagecurrent__电流.Hesuddenlynoticedthatonabenchnearbyapieceofpapercoatedwithachemicalsubstancebegangivingoffanstrangelight.OverthefollowingtwoweeksRoentgenperformedaseriesofexperimentsthatprovedtheexistenceofaformofelectro-magnetic电磁的radiationhecalledX-rays.Hisastonishingdiscoveryhasledtoadeeperunderstandingofthephysicalworld----inparticulartothefieldofmedicaldiagnosis诊断.X-raysarewidelyusedinmedicinetomakeradiographsorX-rayspicturesofthebonesandinternalorgansofthebodytoseewhetherdiseasesexistsuchasbrokenbonesorlungdiseases.AradiographismadebypassinganX-raysbeamthroughapatient’sbodyontoapieceofphotographicfilm.Thebonestakesinmoreoftheraysthandomusclesorotherorganssothebonesthrowthesharpestshadowsonthefilm.Improvementsoverthepastcentury----fromfluoroscopy荧光透视法toCTscans----havemadeX-raystechnologyaninvaluabletoolofmedicinE.78.AtthebeginningofthepassageProf.WilhelmRoentgenwas_______.A.performinganentertainingprogramB.playingmagicC.doingsomeexperimentsD.Noneofabove79.WhenProf.Roentgenplacedaglassvacuumtubeinablackboxandappliedahigh-voltagecurrenthe_______.A.sawabenchnearbyB.noticedapieceofpaperonanearbybenchbegintoburnslowlyC.noticedapieceofpaperonanearbybenchbegintogiveoutstrangelightD.noticedapieceofpaperwascoatedwithachemicalsubstance80.Theboneshaveclearershadowonthephotographicfilmthandomusclesorotherorgansbecause______.A.thebonesareharderthanthemB.thebonescanhelpabsorbmoreraysthanthemC.thebonescanblockmoreraysthanthemD.X-rayscannotpassthroughthebones
Japanesedoctorshaveusedthinsheetsoftissue肌肉组织frompeople’scheeksrepairdamagedcorneas角膜.A.teamfromOsakaUniversitytransplantedthinlayersofcheekcellsontotheeyesoffourpatientswitharareandpainfuleyeconditionreportsBBConlinE.Patientswhosevisionhadbeencloudycouldseewellafterwardsandthenewcorneasremainedclearmorethanayearaftertheoperation.Doctorscanalsotakecellsfromahealthyeyeandgrowtheminadishtoproduceanewcorneaortheycantransplantcorneasfromdonors捐献者.ButthesetechniquesmaynotworkwhenbotheyesaretoobadlydamagedbyaccidentordiseasE.Theteamhopetheirworkmayhelpsolvetheproblemandleadtoothertypesofgrow－your－owntissuetransplants.ThecorneaistheclearlayerofcellsonthesurfaceoftheeyE.Itcanbedamagedbytrauma外伤orbyarangeofdiseases.Theteamworkedwithfourpatientswhohadapainfulconditionthatcausescloudycorneasanddryeyes.Oftentheeyecanregenerate再生corneacellsbutnoneofthefourpatientshadthisability.Theresearcherstooka3mm－widesquareoftissuefrominsidethemouthcheeksandgrewitintoathinlayerinthelaB.Theyusedaspeciallowtemperaturetechniquetoseparateaverythinsheetoffeachbatch.Theythenlaidthatontothepatient’seyE.ThecelllayersstuckontotheeyeanddevelopedintotissuethatlookedandactedlikeahealthycorneA.Howeverlong－termfollow－upandexperiencewithalargeseriesofpatientsisneededtoassessthebenefitsandrisksthismethoD.Yetitdoesofferthepotential潜能oftreatingsevereeyediseasesthatareresistanttostandardapproachessaidtheheadoftheresearchKohjiNishidA.48.NowdoctorscanrepairthedamagedcorneaswiththefollowingmethodsExcept_______.A.byusingmouthtissueB.bytakingcellsfromahealthyeyeandgrowingtheminadishC.bytransplantcorneasfromanotherpersonD.byusingfingertissue49.Ifbotheyesaretoobadlydamagedwecantreatthem_________.A.onlybyusingmouthtissueB.bytakingcellsfromahealthyeyeandgrowingtheminadishC.bytransplanthealthycorneasfromdonorsD.bynoneofthementionedmethod50.Wecaninferfromthepassage___________.A.thenewtechniquecanbewidelyusedintheoperationsB.thenewtechniqueneedstobefurthertestedC.thenewtechniquehasmorebenefitsthanrisksD.anynewtechniquehasrisks51.WhichofthefollowingisthebesttitleA.AnewinventionB.AnewtechniqueC.MouthtissuecanrestoreyourvisionD.Transplantingcanrestoreyourvision
Haveyoueverbeenfrustrated沮丧的whenlefttalkingtoyourselfafteryourmobilephonebatteryrunsoutinthemiddleofacall?Ifyesthenherecomessomegoodnews.Scientistsarenowperfectingawaytorecharge充电electricalequipmentwhileonthemove.ResearchersfromtheNetherlandsFranceandPortugalannouncedlastweekthattheyhavedevelopedverythinsolarpanels太阳能板thatcanbeputonclothes.Theycanalsobeaddedtofurnitureandrooftops.Theychangelightfromthesunintoelectricity.Inaboutthreeyearsyou'llbeabletowearajacketthatwillrechargeyourphoneasyouwalk.Forcampingfansthedevelopmentcouldleadtoatentwhichchargesbatteriesalldaysoyoucanhavelightormusicatnight.Thebasictechnologyofwearablesolarpanelsisthesameasthatusedforconventional传统的solarpanels.Pairsofsheetsofsemi-conductingsilicon半导体硅arelinkedtogethertoformthepanel.Butscientistsmadethemmuchthinnerbyusingdifferentsilicon.Atonemicro-metretheyarethesamethicknessasphotographicfilm.ThistechnologywillmakeiteasierforpeopletousecleanenergysourcessaidGerritKroesenaphysicistintheNetherlandswholedtheteamofscientists.Butthethinpanelsarenotasefficientasthethickerones.Whilesomesolarpanelsnowoperateatanefficiencyofabout20percentthenewflexible柔韧的panelsareonly7percentefficient.Butthescientistsbelievethatthisisworthacceptingforastrongerandmoreusefulpanel.Butthethinnerpanelischeaper.AnA4sizedpanelputontothebackofajacketcostslessthanUS$13.ItcouldchargeacellphoneduringasummerwalkinthecountrysidE.Aslongasyoustaywithinrangeofthetransmittingmasts发射天线thatrelayacalltothenetworksphoneswillneveragainrunoutofpower.72.Whatisthemeaningofthephraseonthemoveinparagraph2?A.Takingacourseofaction.B.Goingfromoneplacetoanother.C.Changingclothesbeforemoving.D.Changingthemobilephonebattery.73.Whatisthepassagemainlyabout?A.A.waytorechargeelectricalequipment.B.Anewkindofchargeablebattery.C.A.newtypeofmobilephonE.D.Auseofmobilephones.74.Whatisthemostimportantinthedevelopmentofthetechnology?A.Photographicfilm.B.Warmerclothes.C.Furnitureandrooftops.D.Thinflexiblesolarpanels.75.WhatisNOTlikelytohappeninthefuture?A.YoucanlistentomusicinacampsiteusingtheelectricityfromsunshinE.B.Yourmobilephonebatteryrunsoutinthemiddleofacall.C.YouwearajacketthatwillrechargeyourphonE.D.Youcanchangelightfromthesunintoelectricity.
LearningEnglishisagreatchallengebutwithalittlehelpfromtechnolo-gyitcanbeaseasyasapieceofcakE.AswellastheclassroomteachersandtextbookstheInternetTVandradioprogrammescanplayanactiveroleinhelpinglearnEnglish.TheInternetisfullofrichandup-to-dateinformation.Englishlearnersmightwishtotryhttp://www.in2english.com.cn./Thiswebsiteisco-establishedbytheBritishCounciltheBBCWorldServ-iceandCentralRadioandTVUniversity.ItprovidesculturalinformationaboutBritainandhasanexampleoftheIELTSInternationalEnglishLanguageTestingSystemthatstudentscanuseforpracticE.DifferentlevelsofgrammartestscanalsobefounD.MakefriendsonlineAnotherusefulwebsiteformiddleschoolstudentsandteachersiswww.21sE.com.cn.Besidesreading21stCenturySchoolEditiononlinestudentsarealsoinvitedtoputtheirviewsondifferenttopicsuponthewebsitE.Usershavetheopportunitytomakefriendswithpeoplewhosharetheirinterests.Intheteachingandlearningsectiontherearereadingandvocabularytipsforstudents.ComparedwiththeInternetTVprogrammeshavetheirownadvantages:onedoesnothavetositatacomputerandtheaudioandvisualeffectscanevenberelaxing.OnepopularEnglish-learningprogramiscalledModernEnglish.ThisfocusesonoralEnglishinpracticalsituationssuchastakingphotosandshopping.TheshortdialoguesandusefulphrasesmayhelpstudentstoexpressthemselvesiftheygoabroadormeetforeignersinChina.Morethan50TVstationsinabout300citieshaveairedtheprogram.WordtoWorldIfyouwatchBeijingTelevisionChannel8youmightseeaprogramtitledStudyAbroad.OnthisshowProfessorWangQiangfromNewOrientalSchoolhostsFromWordtoWorld.HeselectswordswithdeepculturalbackgroundandteachesusefulphrasesrelatedtothatworD.CartoonsarealsousedtoexplainhowtousethewordindailylifE.ListeningtotheradiomaynotbeanewwaytolearnEnglishbutitiseasy.ChinaRadioInternationalairsaprogramcalledStudioClassroomat6:30A.m.everyday.This25-minuteprogramisaimedatmiddleschoolstudentsandcoverssubjectsfromcurrentnewstotravelandhistoryallinsimplelanguagE.71.Thispassage______.A.introducessomenewwebsitesandTVandradioprogrammesB.focusesonadvantagesanddisadvantagesofdifferentmediumformsC.recommendstechnologicalhelpinlearningEnglishD.aimsatadvertisingvariousEnglishcourses72.IfyouwanttoreadanEnglishnewspaperandmakecommentsondifferenttopicsyoutry_____.A.www.in2english.com.cn.B.www.21sE.com.cn.C.ModernEnglishD.StudioClassroom73.OnecanpractiseoralEnglishineverydaysituationsin_____.A.StudioClassroomB.FromWordtoWorldC.StudyAbroadD.ModernEnglish74.AccordingtotheauthoronesuperiorityofTVprogrammesovertheInternetisthatthey____.A.offermoreEnglishlearningresourcesB.costyounothingC.havebetteraudioandvisualeffectsD.haveEnglishcoursesavailablewheneveryouneedthem75.TheauthorwantsthereaderstoknowthatlearningEnglish______.A.isdifficultB.iseasyC.isneithereasynordifficultD.canbemademucheasierwithalittlehelpofmoderntechnology
Testanxietyisactuallyatypeofperformanceanxiety.Performanceanxietyisthatapersonfeelsworriedabouthowheorshewillperformespeciallywhenit’sreallyimportant.Forexampleyoumightfeelperformanceanxietywhenyou’retryingoutfortheschoolbandorforthebasketballteam.Whenyou’retakingatestyoumightfeelbutterfliesastomachacheoratensionheadachE.Somepeoplemightfeelshakysweatyorfeeltheirheartbeatingquicklyastheywaitforthetesttobegivenout.A.studentwithreallystrongtestanxietymayevenfeelheorshemightpassoutorthrowup.Soundfamiliar?You’renotalonE.Askotherpeopleandyou’llfindthatjustaboutallpeopleadultsorteenagersfeelsomeanxietybeforeatest.InfactasmalldoseofanxietycanbehelpfulkeepingyousharpandfocuseD.Butwhenyoursymptoms症状takeoversothatyoucan’tfunctionorwhenyou’resoanxiousthatyoufeelsickyoumightnotbeabletodoyourbest.Ofcourseifyoudidn’tstudyforthetestyoumightbeworried-andforgoodreason.Thatkindofanxietyisn’taseasytotacklebecauseevenifyoufindawaytocalmdownyoustillmightnotknowwhatthetightanswersarE.Whenyouarepreparedforatestandyougetahandleonyouranxietyyou’llbealetoletyourknowledgeshineandscoreagoodgradE.55.WhichoneofthefollowingisNOTtheresultoftestanxiety?A.SweatyB.Nervous.C.ShakyD.Calm.56.Wecanlearnfromthispassagethat_______.A.astudentwithstrongtestanxietymustfeelsickB.actuallyonlyafewpeoplefeeltestanxietyC.itmaybehelpfultohaveasmallamountofanxietyD.ifyoufeelalotofanxietyyoucangetagoodresult57.Youmayfeeltestanxietyif_____.A.youarenotwellpreparedforthetestB.thereissomethingwrongwithyourbodyC.youarenotcleverenoughtoworkoutalltheproblemsD.youcan’tkeepyourselffocusedallthetime58.Whichcanbethebesttitleofthepassage?A.AnxietyisusefulB.PerformanceanxietyC.AllkindsofanxietyD.Testanxiety
Anapehasalargerbrainthananyanimalexceptmanthoughitismuchsmallerthanaman’sbrain.Apesallbelongtothehotcountriesoftheworld―tropicalAfricaandSouth―eastAsiA.Thegorillaisthelargestoftheapes.Heisastallassixfeetwhenstandingupright.ManypeoplethinkthatgorillasareveryfiercE.Theyareoftendescribedasstandinguprightlikeamanbeatingtheirfistsandroaring.IntheirhomeintheforestsofCentralAfricahowevertheyarenotatalllikethisTheyarepeacefulanimalsandneverusetheirgreatstrengthunlessattackeD.Eventhentheyretreatiftheycan.Gorillashaveblackfacesandlongblackhairycoats.Theyfeedduringthedayonplantsandfruit.Atnighttheoldmaleoftensleepsonthegroundatthefootofatreewhiletheotherseachmakeasleepingplatforminthetreebendingtheleafybranches.Besidesthisgorillasclimbtreesveryseldom.56.Apeslivein___________.A.differentpartsoftheworldB.thecoldcountriesC.SouthAmericaandAfricaD.thecountriesofAfricaandsouth―eastAsia57.Anape’sbrainis__________.A.aslargeasaman’sbrainB.alotsmallerthanaman’sbrainC.largerthanthatofanyotheranimalincludingmanD.alotlargerthanaman’sbrain58.A.gorillaisaboutsixfeettallwhenhe__________.A.standsonhislegsB.standonhisarmsC.roarsD.useshisgreatstrength59.Allgorillasliveon____________.A.vegetablesB.leavesandgrassC.plantsandfruitD.rice60.Duringthenightgorillausuallysleepintreesexcept__________.A.theoldfemalegorillaB.theoldmalegorillaC.theyounggorillasuptosixyearsoldD.thebabygorillas
Plantsareveryimportantlivingthings.Lifecouldnotgoiftherewerenoplants.Thisisbecauseplantscanmakefoodfromairwaterandsunlight.Animalsandmancannotmakefoodfromairwaterandsunlight.Animalsgettheirfoodbyeatingplantsandotheranimals.SoanimalsandmanneedplantsinordertolivE.Thisiswhywefindthattherearesomanyplantsaroundus.Ifyoulookcarefullyattheplantsaroundyouyouwillfindthattherearetwokindsofplants:floweringplantsandnon-floweringplants.Floweringplantscanmakeseeds.Theseedsareprotectedbythefruits.Somefruitshaveoneseedsomehavetwothreeorfourandsomehavemanyseeds.Butafewfruitshavenoseedsatall.Anexampleofafruitwithoutseedsisthebananafruit.Mostnon-floweringplantsdon’tgrowfromseeds.Theygrowfromspores.Sporesaresosmallandlightthattheycanfloatintheair.Wemaysaythatsporesarequitethesameastheseeds.Whenthesesporesfallonwetandshadyplacestheyusuallygrowintonewplants.56.Themainideaofthepassageisthat__________.A.plantsareimportantforlifeB.plantscannotgrowwithoutairC.therearemanyplantsaroundusD.wecannotlivewithoutwater57.WhichofthefollowingisNOTTRUE?A.Plantscanbedividedintomaintypes:floweringplantsandnon-floweringplants.B.AllfruitshaveseedsinthemC.Seedsareprotectedbythefruits.D.Someplantsgrowfromspores.58.Thewordnon-floweringinthispassagemeans__________.A.开花的B.有花的C.多花的D.不开花的59.Inshadyplacethereis__________.A.alotofsunshineB.alotofwaterC.nowaterD.littlesunshine
Scientistsaretryingtomakethedesertsintogoodlandagain.TheywanttobringwatertothedesertssopeoplecanliveandgrowfooD.Theyarelearningalotaboutthedeserts.ButmoreandmoreoftheearthisbecomingdesertallthetimE.ScientistsmaynotbeabletochangethedesertintimE.WhyismoreandmorelandbecomingdesertScientiststhinkthatpeoplemakedeserts.Peoplearedoingbadthingstotheearth.Someplacesontheearthdon’tgetmuchrain.Buttheystilldon’tbecomedeserts.ThisisbecausesomegreenplantsaregrowingtherE.Smallgreenplantsandgrassareveryimportanttodryplaces.Plantsdon’tletthesunmaketheearthevendrier.Plantsdonotletthewindblowthedirtaway.Whenabitofrainfallstheplantsholdthewater.Withoutplantsthelandcanbecomedesertmoreeasily.41.Deserts＿＿＿＿＿＿＿＿.A.neverhaveanyplantsoranimalsinthemB.canallbeturnedintogoodlandbeforelongC.arebecomingsmallerandsmallerD.getverylittlerain42.Smallgreenplantsareveryimportanttodryplacesbecause＿＿＿＿＿＿＿＿.A.theydon’tletthesunmaketheearthevendrierB.theydon’tletthewindblowthesoilawayC.theyholdwaterD.AlloftheabovE.43.Landisbecomingdesertlittlebylittlebecause＿＿＿＿＿＿.A.plantscan’tgrowthereB.thereisnotenoughrainC.peoplehaven’tdonewhatscientistswishthemtodoD.scientistsknowlittleaboutthedeserts44.Afterreadingthispassagewelearnthat＿＿＿＿＿＿＿＿.A.plantscankeepdrylandfrombecomingdesertB.itisgoodtogetridofthegrassinthedesertsC.allplaceswithoutmuchrainwillbecomedesertsD.itisbettertogrowcropsondrylandthantocutthem
WeoftenhearpeoplesayIhaveagoodmemoryforthingslikethatorIcanremembernames.Butdoyouknowmemoryisthesinglemostimportantthingandithasplayedaveryimportantpart?Forearlymenthereweredangerousallaroundthem----badweatherwildanimals.Thekeystokeeponlivinglayinman'sabilitytorememberthesedangersandthewayshehaddealtwiththeminthepast.Inorderformemoriestobestoredthehumanbrainbecamemorecomplex.Andasmanlearnedhowtodealwiththemhebecamecivilized文明.Surprisinglyscientiststodayunderstandlittleaboutmemoryandhowitworks.Theyhavenotyetfoundawaytoopenupthebrainandobserveitsfunctionwithoutdestroyingit.Perhapstherearetwotypesofmemory:short-termandlong-term.Short-termreferstothosefactsthatstaywithusforafewsecondstoafewhours.ForinstancewhenyoustayatahotelyouremembertheroomnumberandforgetassoonasyouleavE.Long-termmemoryontheotherhandmeansyourememberthingsforalongperiodoftimE.Ifyouspendyourhoneymooninaparticularhotelit'slikelythatyou'llrememberyourstayquiteclearly.Scientistsalsobelievethatashort-termmemorycanbecomealong-termmemorythroughconsolidation巩固.A.lotofchemicalandphysicalchangestakeplaceinthepartofthebrain.Althoughthehumanbrainweighsthreepoundsitcontains30billionnervecells神经细胞actinglikeacomputer.Whenthosechangesstrengthenthelinks联系incertainnervecellsathoughbecomesapartofthelong-termmemory.60.Accordingtotheauthorwithoutthedevelopmentofman'smemorytherewouldbe_____.A.nomodernworldB.norecordedhistoryC.noanimalsD.nodangers61.Scientists'knowledgeaboutthefunctionofbrainis_____.A.interestingB.notenoughC.greatD.encouraging62.Short-termmemorycanchangeintolong-termmemoryonconditionthat_____.A.memoryisgoodB.itactslikeacomputerC.peopledomoreexerciseD.thelinksinnervecellsarestrengthenedbycertainchanges63.Sofarthegreatdiscoveryscientistshavemadeaboutthefunctionofbrainis_____.A.theweightofbrainB.twotypesofmemoryC.30billionnervecellsD.chemicalandphysicalchanges
Thejourneytwonaval海军的officersmadesometimeagototheverydeepestpointontheearthmakesusrealizehowmuchoftheworldstillremainstobeexploreD.ThetwomenwentdownsevenmilestothebottomofthePacificOceaninsideasmallsteelballcalledabathyscaphe探海球tofindoutifthereareanyoceancurrentsorsingsoflifE.Itwasnecessarytosetoutearlysothatthebathyscaphewouldcometothesurfaceindaylightandsobeeasilyfoundbythemothershipwhichwouldbewaitingforit.Thedriversbeganpreparationsatdawnandsoonafterwardswhenallwasreadythesteelballdisappearedunderthesurfaceofthewater.Intimethetemperaturedroppedtofreezing-pointandthementrembled颤抖insidetheball.Theykeptintouchwiththemothershipbytelephonedescribinghowtheyfelt.Thenatadepthof3000feetthemenweresurprisedbyasuddenloudnoiseeventhesmallestholeintheballwouldhavemeantinstant立即的death.Luckilythoughitwasonlyoneoftheouterwindowsthathadbroken.Soonafterwardsthebathyscaphetouchedthesoftoceanfloorraisingabigcloudofdustmadeupofdifferentkindsofsmalldeadseaanimals.Herepowerfullightslitupthedarkwaterandthemenweresurprisedtoseefishswimmingjustabovethemquiteuncontrolledbytheverylargewater-pressurE.Buttheydidnotdaretoleavethelightsonforlongastheheatfromthemmadethewaterboil.Quiteunexpectedlythetelephonebeganworkingagainandtheweakbutclearvoicesoftheofficerswreheardonthemothership.Afterastayofthirtyminutesthemenbegantheirjourneyuparrivingthreehourslatercoldandwetthroughbutnonetheworsefortheirexperience.71.Theofficersstartedtheirjourneyatdawn________.A.becausetheycouldreturnin24hoursB.becausetheseawascalmthenC.whenthesunwasnotstrongD.sothattheycouldreturnbeforedark72.Whatdidtheofficersfindoutatthebottomofthesea?A.Differentdeadseaanimals.B.SignsoflifE.C.NothingbutabigcloudD.Onlydust.73.Thejourneytothebottomoftheseahelpedustorealizethat________.A.muchoftheworldhasn'tyetbeenexploredB.therearenotanysingsoflifeatthebottomoftheseaC.strongwater-pressurehasgreateffectonfishD.powerfullightscannotbeturnedonattheoceanfloor74.Whichofthefollowingisclosestinmeaningtotheunderlinedpart?A.Theywerecoldandwetthroughwhichwastheworstthingatall.B.TheywereevenworsethancoldandwetthroughatthebottomoftheseA.C.Consideringwhattheyhadjustexperiencedbeingcoldandwetthroughwasevenbetter.D.Forsuchanexperiencebeingcoldandwetthroughwasnotbadforthematall.75.Thebesttitleforhispassagemightbe________.A.TheinventionofabathyscapheB.TwonavalofficersshouldbeawardedC.TheadventuretothebottomoftheoceanD.Theoceanfloorissoftanddusty
Whatwillmanbelikeinthefuturein5000oreven50000yearsfromnow?WecanonlymakeguessesofcoursebutwecanbesurethathewillbedifferentfromwhatheistodayformanisslowlychangingallthetimE.LetustakeanobviousexamplE.Manevenfivehundredyearsagowasshorterthanheistoday.Nowonaveragemenareaboutthreeinchestaller.Fivehundredyearsisarelativelyshortperiodoftimesowemayassumethatmanwillcontinuetogrowtaller.Againinthemodemworldweuseourbrainsagreatdeal.Evensowestillmakeuseofonlyabout20%ofthebrain'scapacity.Astimegoesonhoweverweshallhavetouseourbrainsmoreandmoreandeventuallyweshallneedlargerones!Thisislikelytobringaboutaphysicalchangetoo:theheadinparticulartheforeheadwillgrowlarger.NowadaysoureyesareinconstantusE.Infactweusethemsomuchthatveryoftentheybecomeweakerandwehavetowearglasses.Butoveraverylongperiodoftimeitislikelythatman'seyeswillgrowstronger.Ontheotherhandwetendtomakelessuseofourarmsandlegs.Theseasaresultarelikelytogrowweaker.AtthesametimehoweverourfingerswillgrowmoresensitivebecausetheyareusedagreatdealinmodemlifE.Butwhatabouthair?Thiswillprobablydisappearfromthebodyaltogetherincourseoftimebecauseitdoesnotserveausefulpurposeanylonger.InthefuturethenbothsexesarelikelytobebalD.Perhapsallthisgivestheimpressionthatfuturemanwillnotbeaveryattractivecreaturetolookat!ThismaywellbetruE.Allthesameinspiteofallthesechangesfuturemanwillstillhavealotincommonwithus.Hewillstillbeahumanbeingwiththoughtsandemotionssimilartoourown.62.Thepassagemainlytellsusthat.A.man'slifewillbedifferentinthefutureB.whatwillmanlooklikeinthefutureC.manisgrowingtalleranduglierastimepassesD.human'sorgans'functionswillbecomeweak63.Thechangeinman'ssizeofforeheadwillprobablybebecause.A.hemakesuseonly20%ofthebrain'scapacityB.hisbrainhasgrownlargeroverthepastcenturiesC.theother80%ofhisbrainwillgrowinduetimeD.hewillusehisbrainmoreandmoreastimegoeson64.Whatwillbetrueaboutahumanbeinginthefuture?A.Hewillbehairlessbecausehairisnolongeruseful.B.Hewillhavesmallereyesandwillwearbetterglasses.C.Hisfingerswillgrowweakerbecausehewon'thavetomakeuseofthem.D.Hewillthinkandfeelinadifferentway.65.Itisimpliedthat.A.humanbeingswillbecomelessattractiveinthefuturE.B.lessuseofabodilyorgan器官mayleadtoitsdegeneration退化.C.humanbeingshopeforachangeinthefuturelifE.D.futurelifeisalwayspredictablE.
Itisnaturalthatchildrenarecurious好奇的abouttheworldaroundthem.Forexampletheywanttoknowhowtheirheartsbeat.Theywanttoknowwhytheoceanwatertastessalty.Aschildrengrowuptheybecomecuriousaboutdifferentkindsofthings.Whentheyarebabiestheyareinterestedinthepartsoftheirbodiesandinthesmilesoftheirmothers.Theybecomeinterestedinthephysicalworldaroundthem:theplantstheanimalsthesky.Latertheybecomeinterestedinthethingsthatpeoplehavemade:wheelsbicyclescars.Andwhentheyareadultstheircuriositycontinues.Sometimesthiscuriosityleadstoacareer生涯职业insciencE.Scientistsspendtheirlivestryingtofindoutabouttheworld.Thosewhoworkwiththeearthsciencesstudytheearththeoceansandtheskies.Otherscientistswhostudylivingthingsworkwiththebiologicalsciences.A.thirdgroupofscientistsstudythephysicalsciencesE.g.physicschemistry.Thesescientistshavealreadydiscoveredalotaboutourworld.Forexampletheytelluswhyyourheartbeatsfastwhenyourun.Theysaythatwhenyouarequietyourheartnormallybeatssixty-fiveorseventy-fivetimesaminutE.Yourheartisapump泵thatpumpsbloodtoallpartsofthebody.Thebloodcarriesoxygenandnutrition.Whenyourunyourmusclesworkveryhardandusethenutritionthatthebloodcarriestothem.Themusclesneedoxygentoo.Soyourbrainsendsasignaltotheheart.Thesignalmeansthatthemusclesneedmorenutritionandoxygen.Thentheheartbeatsfastandsendsbloodquicklytothemuscles.Itmaybeat90to140timesaminutE.Ofcoursescientistscannotanswerallofourquestions.IfweaskWhydoestheoceanwatertastesaltyscientistswillsaythatthesaltcomesfromrocks.Whenarockgetsveryhotorverycolditcracks.Rainfallsintocracks.Therainthencarriesthesaltintotheearthandintotherivers.Theriverscarrythesaltintotheocean.ButthenweaskWhathappenstothesaltintheocean?Theoceandoesnotgetsaltiereveryyear.Scientistsarenotsureabouttheanswertothisquestion.Weknowalotaboutourworldbuttherearestillmanyanswersthatwedonothaveandwearecurious.41.Accordingtothepassagewhichofthefollowingstatementsistrue?A.Peoplearecuriousinthesameway.B.Peopleindifferentcountriesareinterestedindifferentthings.C.Menandwomenarecuriousaboutdifferentthings.D.Peopleofdifferentagesareinterestedindifferentthings42.Scientistswhoworkwiththebiologicalsciencesstudy____.A.theearththeoceansandtheskyB.man-madethingsC.plantsandanimalsD.oceanwater43.Whenyourunyourmusclesneed____.A.morenutritionandoxygenB.moresignalsC.moresaltD.water44.Arockcracks_____.A.inwetregionsB.indryregionsC.atveryhighorverylowtemperaturesD.whensaltywaterfallsin45.Peoplearealwayscuriousbecause____.A.theycannotexplainmanythingsB.theyknownothingabouttheworldC.theyknowlittleabouttheworldD.theywanttobescientists
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