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高中英语《宁夏银川一中2013-2014学年高二下学期期末考试试卷 试题及答案》真题及答案
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TheGreatBarnAdventureOnemorningwhenIwas11Iexploredthetown’sabandonedroundgrainbarn谷仓.Ifoundachainedslidingdoorthatwaswideenoughformetopassthrough.Insidetherewasaheavysmellofdeadmiceinthedark.AftermyeyesadjustedInoticedashaft升降机井thatroseallthewaytothetopofthebarn.Ononesidewasaone-manelevatorwithalongropeandroller.Isteppedontotheplatformandgavetheropeadragandtheelevatorbeganslidinguptheshaftbutstoppedhalfway.AfterabriefpanicattackInoticedholesinthewallatregularintervalsformingaladder.Forreasonsknownonlytoan11-year-oldIdecideditwouldbebettertogoupthandown.SowithshakinghandsIbeganclimbingthewall.AfterwhatseemedlikeforeverIreachedthetopoftheshaft.Istoodupdustedmyselfoffandfoundabsolutelynothingofinterest.Itwasjustanemptyroomwithaladderleadinguptotheroof.Iclimbedallthewayuphereforthis?ThenInoticedafireextinguisher灭火器whichI’dalwayswantedtoshootoff.SothiswasthechanceofalifetimE.Itrieditandmuchtomysurprisethethingworked!Itshotoutathickcloudofpowderthatinstantlyfilledtheroom.Icouldn’tbreathE.Iwasgoingtochoketodeathandthey’dprobablyneverevenfindmybody.LuckilyIrememberedtheladdertotheroof.Iclimbeduppoppedthestrawroofandsawabrightbluesky.Isuddenlyrealizedthedustandpowderpouringoutofthetopcoulddrawattention.SowhenthedusthadsettledIclimbeddownandslippedoutofthechaineddoor.I’mnotsureifIwasmoreexcitedaboutbeingaliveoraboutnotbeingcaughtbutIranallthewaybackhomE.21.Whentheauthorgotinsidethebarnhe_______.A.noticedamanontheelevatorB.openedthechainedslidingdoorC.sawmanydeadmiceinthedarkD.foundashaftleadingtothetop22.Whichofthefollowingistherightorderoftheauthor’sadventure?A.Theelevatorstoppedhalfway.B.Heenteredtheroundgrainbarn.C.Heclimbedtothetopoftheshaft.D.Hefoundafireextinguisherandshotitoff.A.b-a-c-dB.b-c-a-dC.b-a-d-cD.b-c-a-d23.Aftergettingoutofthechaineddoortheauthormightfeel_______.A.inspiredB.relievedC.surprisedD.disappointed24.Fromthepassagewecanlearnthattheauthorwasprobablyaboyfullof_______.A.passionsB.dreamsC.curiosityD.imagination
FILTONjustoutsideBristoliswhereBritain’sfleetofConcordesupersonic超音速的airlinerswasbuilt.TheresomethingremarkableisbeingcreateD.Littlebylittleamachineisprintingacomplextitaniumbracket钛合金支架aboutthesizeofashoewhichnormallywouldhavetobecutfromasolidblockofmetal.Bracketsareonlythebeginning.TheresearchersatFiltonhaveamuchbiggerambition:toprinttheentirewingofanairliner.Unrealisticasthismayseemmanyotherpeopleareusing3Dprintingtechnologytocreatesimilarlyremarkablethings.Theseincludemedicalimplantsjewelleryfootballbootsdesignedforindividualfeetlampshadesracing-carpartssolid-statebatteriesandcustomizedmobilephones.Someareevenmakingmechanicaldevices仪器.AttheMassachusettsInstituteofTechnologyMITPeterSchmittaPhDstudenthasbeenprintingsomethingthatisliketheworkingsofagrandfatherclock.Ittookhimafewattemptstogetrightbuteventuallyheremovedtheplasticclockfroma3Dprinterhungitonthewallandpulleddownthecounterweight.Itstartedticking.Engineersanddesignershavebeenusing3Dprintersformorethanadecadebutmostlytomakeoriginaltypesquicklyandcheaplybeforetheyembarkontheexpensivebusinessoftoolingupafactorytoproducetherealthing.As3Dprintershavebecomemoreabletoworkwithabroaderrangeofmaterialsincludingproduction-gradeplasticsandmetalsthemachinesareincreasinglybeingusedtomakefinalproductstoo.Morethan20%oftheoutputof3DprintersisnowfinalproductsratherthanoriginaltypesaccordingtoTerryWohlerswhorunsaresearchfirmspecializinginthefielD.Hepredictsthatthiswillriseto50%by2020.1.Whichofthefollowingistrueaccordingtothepassage?A.FiltonisinthecentreofBristol.B.Petertriedtoprintaclockbutinvain.C.aremarkablemetalbracketisbeingcreateD.D.3Dprintingtechnologyisavailabletoallofus.2.Theunderlinedwordembarkprobablymeans_________.A.workB.landC.dependD.fix3.Wecanconcludefromthelastparagraphthat__________.A.TerryWohlers’sfirmwillmakegreatprofitsB.thetechnologyof3DprinterswillbewidelyadoptedC.3Dprintershavebeeninuseforatleast100yearsD.engineersanddesignerspreferprintingoriginalproducts4.Thepassageisdevelopedmainlyintheformof_______.A.timeandeventsB.definitionanddescriptionC.contrastandconclusionD.examplesandstatements
ThekitewasoriginallycalledZhiyuaninNorthChinaandYaoziinSouthChinA.EarlyintheFivedynastiesamannamedLiYeusedtomakeandflyakiteintheemperor'scourt.HeonceattachedawhistlemadeofbambootothekitE.Soundwasletoutwhenthekitewasflying.ThekitewasnamedafterZhengakindofChinesemusicinstrument.ThenitwasnamedFengzhenginChinesE.TheearliestkiteintheworldwasmadebyMotseafamousChinesephilosopherwholived2300yearsagoformilitary军事的purposes.Hespentthreeyearsmakinganeagleandmanagedtoflyit.TheeaglewaslaterregardedasthefirstkiteintheworlD.Kite-flyingbecamearecreationprobablyfromtheTangdynastywhentheroyalfamilyandpeopleofthehighestclasswereaddictedtoit.ItwassaidthattheEmperorXuanzongintheTangDynastyoncewasinterestedinakitenamedEightImmortalsCrossingtheSeaflyingintheair.Laterthepaper-madekitewasinventedwhichcostlessandspreadquicklyamongthecommonpeoplE.AstimewentonkitesflewtovariouscountriesintheworlD.'Thewell-knownBritishscientistDr.NeedhamoncedescribedkitesasanimportantscientificinventionwhichspreadtoEuropefromChinainhisbookA.HistoryofChina'sScienceandTechnology.Theinventionofthekiteinspiredmen’sdreamofflyingandledtotheinventionoftheairplanE.60.ThekitemadebyLiYewasnamedafteraChinesemusicinstrumentbecause__________.A.itwasmadeofbambooB.itcouldsoundintheskyC.LiYewasamusicianD.itlookedlikeawhistle61.Whatledtotheinventionofthekiteaccordingtothepassage?A.Wars.B.AneaglE.C.Motse'sinterestinanimals.D.Motse'sdreamofflying.62.Whywaskite-flyingnotapopularrecreationamongcommonpeopleatfirst?A.Becausetheyweretoobusytoflykites.B.Becausetheywerenotallowedtoflykites.C.Becauseitwasdifficulttomakekites.D.Becauseitwasexpensivetomakekites.63.WhichofthefollowingstatementsmightDr.Needhamagreewith?A.TheChinesepeoplefirsttriedtoinventairplanes.B.TheChinesespreadtheideaofflyingtoEuropE.C.TheinventionofkitesinChinaisgreat.D.Theinventionofkitesachievedthedreamtofly.
3Dcinemahasbeenaroundsincetheearly20thcenturybutHollywoodbroughtthetechnologybackin2007.Manythoughtitwasjustatricktomakemoremoney.ButthencameAvatarthefirstmustseemoviein3D.ButsinceAvatar3DcinemahasstruggleD.In_2010_several_3D_movies_bombed_at_the_box_officE.Andbylate2010somepeoplesaidthetechnologywasdeaD.Ofcoursethatwasn'tthefirsttimeHollywoodhadstruggledwithnewtechnology.Althoughsoundwasaddedtomoviesinthelate1920sittookaudiencestimetogetusedtothenewtechnology.ButintheendsoundandcolourbecamethestandarD.JamesCamerondirectorofAvatarthinkswe'regoingthroughthesameprocesswith3D.Somesaycinemasarechargingtoomuchfor3Dmovies.IntheUSseeinga3Dmoviecancostupto$7.5morethanseeingitin2D.AlsoarecentstudyatCaliforniaStateUniversityfindsaudiencesdon'tactuallyenjoymoviesin3Danymorethanin2D.WalterMurchafamousmovieeditorwrotein2011thathumanbeingshavenoabilitytoprocess3Dimages.Watchinga3Dmovieconfusesourbrainandthisiswhysomepeoplegetheadaches.ButJamesCamerondisagrees.Infactherecentlypredictedthatinfiveyearsallmovieswillbein3D.Andtherearesignsthat3Disfightingback.More3Dmovieswereputonthemarketin2012thaneverbeforE.TheLionKing3DrecentlymadeoverUS$150millionattheboxofficeandCameron'sTitanic3DmadeevenmorE.Whoknowswhatthefutureholdsfor3D?StevenSpielbergrecentlysaidI'mhoping3Dgetstoapointwherepeoplenoticeit.Becausethenitjustbecomesanothertoolandhelpstellastory.1.TheunderlinedsentenceinParagraph2probablymeansthatin20103Dmovies________.A.werenotsuccessfulB.becamepopularC.developedquicklyD.wereofpoorquality2.Theexampleofsoundandcolourisusedmainlytoshowthat________.A.HollywoodtendstoabsorbwhatisnewB.3DtechnologytakestimetobeacceptedC.HollywoodstruggleswithnewtechnologyD.hightechnologyhelpstomakebettermovies3.InWalterMurch'sopinion3Dmovies________.A.bringmoviemakersgreatprofitsB.aremoreexpensivethan2DmoviesC.dogreatharmtopeople'shealthD.areunsuitableforpeopletowatch4.Whatcanwelearnfromthetext?A.Avatarwasthefirst3DmoviE.B.3Dcinemahasexistedforyears.C.Titanic3Dhasmadethemostmoney.D.2012witnessedthecomingof3D'stimE.
Spaceiswhereourfutureis—tripstotheMoonMarsandbeyonD.Mostpeoplewouldthinkthatasidefromcomets彗星andstarsthereislittleelseouttherE.Butsinceourspacejourneystartedwehaveleftsomuchtrash垃圾therethatscientistsarenowconcernedthatifwedon'tcleanitupwemayallbeinmortal致命的danger.Thefirstpieceofspacejunkwascreatedin1964whentheAmericansatelliteVanguardIstoppedoperatingandlostitsconnectionwiththegroundcenter.HoweversinceitkeptorbitingaroundtheEarthwithoutanyconsequencesscientistsbecameincreasinglycomfortableabandoningthingsthatnolongerservedanyusefulpurposeinspacE.Itisestimatedthattherearenowover500000piecesofman-madetrashorbitingtheEarthatspeedsofupto17500milesperhour.Thejunkvariesfromtinypiecesofpaintchippedoffrocketstocamerashugefueltanksandevenodditemslikethemillion-dollartoolkitthatastronautHeidemarieStefanyshynPiperlostduringaspacewalk.Themajorproblemwiththespacetrashisthatitmayhitworkingsatellitesanddamagetravelingspacecraft.Moreoverpiecesofjunkmaycollide碰撞witheachotherandbreakintopieceswhichfallbacktotheEarth.Toavoidthisscientistshaveinventedseveralwaysforclearingthesky.Groundstationshavebeenbuilttomonitorlargerpiecesofspacetrashtopreventthemfromcrashingintoworkingsatellitesorspaceshuttles.FutureplansincludeacooperativeeffortamongmanynationstostoplitteringinspaceandtocleanupthetrashalreadytherE.5.WhywerescientistsNOTconcernedaboutspacetrashinthebeginning?A.ItnolongerservedanyusefulpurposE.B.Itwasmillionsofmilesawayfromtheearth.C.Itdidnotcauseanyproblems.D.Itwasregardedassimilartocometsandstars.6.Whichofthefollowingstatementsistrueaboutspacejunk?A.Itishugeheavymachines.B.Itneverchangesposition.C.ItfloatsslowlyaroundtheEarth.D.Itmaycauseproblemsforspaceshuttles.7.Whathasbeendoneaboutthespacetrashproblem?A.Scientistshavecleanedupmostofthetrash.B.LargepiecesofspacetrasharebeingcloselywatcheD.C.ManynationshaveworkedtogethertostoppollutingspacE.D.GroundstationsarebuilttohelpstorethetrashproperlyinspacE.
ScientistshavefoundwhatlooklikecavesonMars火星andsaytheycouldbeprotectinglifefromtheplanet’sterribleenvironment.ThefirstcavesdiscoveredbeyondtheEarthappearassevenmysteriousblackdotsonthepicturessentbackbyNASA’sMarsOdysseyorbiter.EachaslargeasafootballfieldtheymaybeopeningsintonaturalcavesbelowtheMartiansurfacE.IfthereislifeonMarsthereisagoodchanceyou’dfinditincavessaidJutWynneoneoftheresearcherswhonoticedthefeatureswhileworkingonaUSGeologicalSurveyMarsCaveDetectionProgram.JonathanClarkeageologistwiththeMarsSocietyofAustraliayesterdaydescribedthediscoveryasexciting.Onephototakenatnightbyaninfraredimager红外线成像器showedoneholetobeunusuallywarmsuggestinghotairtrappedduringthedayisflowingout.Isaid:‘Wowthat’sacavE.’Dr.Clarkesaidexcitedly.Peoplehavebeenlookingfortheseforalongtime;nowwehavefoundthem.Heagreedsuchcaveswouldbeperfectplacestohuntforlifeescapingfromthebitterlycoldradiation-soaked充满辐射的drysurfacE.TinydropsofwatercouldcollectinsidehesaiD.IftherearegasescomingouttheycouldprovideenergyforawholerangeofbacteriA.A.caveisalsoaprotectionfromradiation;thesurfaceofMarsisexposedtohighlevelsofspaceradiation.Thecavesprobablyformedwhentube-shapedlavaflows管状岩浆流spreadacrosstheplanetlongago.Theoutsideofthetubescooledformingsolidwallswhilesomethinghotterinsideallowedtheremaininglavatoflowoutformingcaves.1.Whatdoesthepassagemainlytalkabout?A.HowthecaveswereformedonMars.B.HowscientistsfoundthesecavesonMars.C.CavesonMarsmaybefullofhotairorasignoflifE.D.ScientistshavecompletelyrecognizedthesurfaceofMars.2.Wecanlearnfromthepassagethat.A.waterhasalreadybeenfoundonMarsB.thescientistsfoundallthecavesatnightC.itiscertainthatthereislifeinthesecavesD.thesurfaceofMarsisbitterlycoldradiation-soakedanddry3.AccordingtothepassageDr.Clarkewassoexcitedbecause.A.suchcavescouldprovideenergyforlifeB.theyhadfinallyfoundthecavesonMarsC.suchcaveswouldbeperfectplacestohuntforlifeD.scientistshadlongbeenlookingforthesecaves4.NecessaryconditionforlifeonMarsmentionedinthepassagemayinclude.A.lavaandenergyB.waterandradiationfromspaceC.gasesandlavaD.waterandprotectionfromradiation
Toextinguish熄灭differentkindsoffiresseveraltypesoffireextinguishershavebeeninventeD.Theymustbereadyforimmediateusewhenfirebreaksout.Mostportable手提式的kindsoperateforlessthanaminutesotheyareusefulonlyonsmallfires.Thelawrequiresshipstrainsbusesandplanestocarryextinguishers.Sincefueloxygen氧气andheatmustbepresentinorderforfiretoexistoneormoreofthesethingsmustberemovedorreducedtoextinguishafirE.Iftheheatisreducedbycoolingthematerialbelowacertaintemperaturethefiregoesout.ThecoolingmethodisthemostcommonwaytoputoutafirE.Wateristhebestcoolingmaterialbecauseitislowincostandeasytoget.Anothermethodofextinguishingfireisbycuttingofftheoxygen.Thisisusuallydonebycoveringthefirewithsandsteamorsomeotherthings.A.blanketmaybeuseddocoverasmallfirE.Athirdmethodiscalledseparationwhichincludesremovingthefuelormaterialeasytoburnfromafiresothatitcanfindnofuel.ThemethodthatisusedtoputoutafiredependsuponthetypeoffirE.Fireshavebeengroupedinthreeclasses.FiresinwoodpaperclothandthelikearecalledClassA.fires.Thesematerialsusuallyhelpkeepthefireon.Suchfirescanbestoppedmostreadilybycoolingwithwater.68.Ifafirebreaksoutonabuswhichofthefollowshouldbereadythereforyoutouse?A.SandB.WaterC.A.blanket.D.Anextinguisher.69.Tocoverasmallpieceofburningwoodwithabasininordertostopthefireisanexampleof_______.A.separatingthefireB.reducingtheheatC.removingthefuelD.cuttingofftheoxygen70.Inchoosinghowtoputoutafireweshouldfirstbeclearabout_______.A.whenitbreaksoutB.howitcomesaboutC.whatkinditisD.whereittakesplace71.Whatwouldtheauthorprobablydiscussintheparagraphthatfollows?A.AnotherclassoffiresB.AnothertypeofextinguishersC.Howfiresbreakout.D.HowfirescanbepreventeD.
Asmallpieceoffisheachdaymaykeeptheheartdoctoraway.That’sthefindingofastudyofDutchmeninwhichdeathsfromheartdiseaseweremorethan50percentloweramongthosewhoconsumedatleastanounceofsalt-waterfishperdaycomparedtothosewhoneveratefish.TheDutchresearchisoneofthreehumanstudiesthatgivestrongscientificsupporttothelongheldbeliefthateatingfishcanprovidehealthbenefitsparticularlytotheheart.Heartdiseaseisthenumber-onekillerintheUnitedStateswithmorethan550000deathsoccurringfromheartattackseachyear.ButpreviousresearchhasshownthatthelevelofheartdiseaseislowerinculturesthatconsumemorefishthanAmericansdo.TherearefewerheartdiseasedeathsforexampleamongtheEskimosofGreenlandwhoconsumeabout14ouncesoffishadayandamongtheJapanesewhosedailyfishconsumptionaveragesmorethan3ounces.For20yearstheDutchstudyfollowed852middle-agedmen20percentofwhomatenofish.Atthestartofthestudyaveragefishconsumptionwasabouttwo-thirdsofanounceeachdaywithmoremeneatingleanfishthanfattyfish.Duringthenexttwodecades78ofthemendiedfromheartdiseasE.ThefewestdeathswereamongthegroupwhoregularlyatefishevenatlevelsfarlowerthanthoseoftheJapaneseorEskimos.Thisrelationshipwastrueregardlessofotherfactorssuchasagehighbloodpressureorbloodcholesterol胆固醇levels.25.Inwhichsectionofanewspapercanwereadthispassage?A.AdsB.MoviesC.BriefsD.HealthandDiet26.Thepassageismainlyabout_________.A.thehighincidenceofheartdiseaseinsomecountriesB.thechangesinpeople’sdietC.theeffectoffisheatingonpeople’shealthD.thedailyfishconsumptionofpeopleindifferentcultures27.Thephrasethisrelationshipinparagraph6referstotheconnectionbetween____andthelevelofheartdiseasE.A.theamountoffisheatenB.regularfish-eatingC.thekindoffisheatenD.peopleofdifferentareas28.Fromthepassageweknowtheauthorismostprobably___________.A.aheartdoctorB.ascienceresearcherC.asupporterofhealthyeatingD.auniversitystudent
Intheanimalkingdomweaknesscanbringaboutaggressioninotheranimal.Thissometimeshappenswithhumansalso.ButIhavefoundthatmyweaknessbringsoutthekindnessinpeoplE.Iseeiteverydaywhenpeopleholddoorsformepourcreamintomycoffeeorhelpmetoputonmycoat.AndIhavediscoveredthatitmakesthemhappy.FrommywheelchairexperienceIseethebestinpeoplebutsometimesIfeelsadbecausethosewhoappearindependentmissthekindnessIseedaily.Theydon’tgettoseethissoftsideofothers.Oftenwetryeverywaypossibletoavoidshowingourweaknesswhichincludesalotofpretending.Butonlywhenwestoppretendingwe’rebraveorstrongdoweallowpeopletoshowthekindnessthat’sinthem.LastmonthwhenIwasdrivinghomeonabusyhighwayIbegantofeelunwellanddrovemoreslowlythanusual.Peoplebehindmebegantogetimpatientandangrywithsomespeedingupalongsidemehorning按喇叭orevenshoutingatmE.AtthemomentIdecidedtodosomethingIhadneverdoneintwenty-fouryearsofdriving.IputonthecarflashlightsanddroveonatareallylowspeeD.Nomoreangryshoutsandnomorehorns!WhenIputonmyflashlightsIwassayingtootherdriversIhaveaproblemherE.IamweakanddoingthebestIcan.AndeveryoneunderstooD.SeveraltimesIsawdriverswhowantedtopass.Theycouldn’tgetaroundmebecauseofthestreamofpassingtraffiC.Butinsteadofgettingimpatientandangrytheywaitedknowingthedriverinfrontofthemwasinsomewayweak.Sometimessituationscallforustoactstrongandbraveevenwhenwedon’tfeelthatway.Butthosearefewandfarbetween.Moreoftenitwouldbebetterifwedon’tpretendwefeelstrongwhenwefeelweakorpretendthatwearebravewhenwearescareD.1.Theauthorhasdiscoveredthatpeoplewillfeelhappywhen______.A.theyoffertheirhelpB.theyreceiveothers’helpC.theyfeelothers’kindnessD.theyshowtheirweakness2.Theauthorfeelssadsometimesbecause______.A.hehasasoftheartB.hereliesmuchonothersC.somepeoplepretendtobekindD.somepeoplefailtoseethekindnessinothers3.Whatdidtheotherdriversdowhentheysawtheflashlights?A.Theyspeeduptopass.B.TheywaitedwithpatiencE.C.Theytriedtheirbesttohelp.D.Theyputontheirflashlightstoo.4.Inthispassagetheauthoradvisesusto______.A.handleproblemsbyourselvesB.accepthelpfromothersC.admitourweaknessD.showourbravery5.Whichofthefollowingisthebesttitleforthepassage?A.A.WheelchairExperiencE.B.WeaknessandKindness.C.WeaknessandStrengthD.A.DrivingExperience
Weknowthefamousones—theThomasEdisonandtheAlexanderGrahamBells—butwhataboutthelessfamousinventors?Whataboutthepeoplewhoinventedthetrafficlightandthewindshieldwiper雨刮器Shouldn’tweknowwhotheyare?JoanMcleanthinksso.InfactMcleanaprofessorofphysicsatMountainUniversityinRangefeelssostronglyaboutthismatterthatshe’sdevelopedacourseonthetopiC.InadditiontolearningwhoinventedwhathoweverMcleanalsolikesherstudentstolearntheanswerstothewhyandhowquestions.AccordingtoMcleanWhenstudentslearntheanswerstothesequestionstheyarebetterpreparedtorecognizeopportunitiesforinventingandmoremotivatedtogiveinventingatry.Sojustwhatisthestorybehindthewindshieldwiper?WellMaryAndersoncameupwiththeideain1902afteravisittoNewYorkCity.ThedaywascoldandstormybutAndersonstillwantedtoseethesightssoshejumpedaboardastreetcar.Noticingthatthedriverwasstrugglingtoseethroughthesnowcoveringthewindshieldshefoundherselfwonderingwhytherecouldn’tbeabuilt-indeviceforcleaningthewindow.StillwonderingaboutthiswhenshereturnedhometoBirminghamAlabamaAndersonstarteddraftingoutsolutions.Oneofherideasalever操作杆ontheinsideofavehiclethatwouldcontrolanarmontheoutsidebecamethefirstwindshieldwiper.TodaywebenefitfromcountlessinventionsandinnovationsIt’shardtoimaginedrivingwithoutGarrettA.Morgan’strafficlight.It’sequallyimpossibletopictureaworldwithoutKatherineJ.Blodgett’sinnovationthatmakesglassinvisibleCanyoupicturelifewithoutclearwindowsandeyeglasses?1.Bymentioningtrafficlightandwindshieldwipertheauthorindicatesthatcountlessinventionsare.A.beneficialbecausetheirinventorsarefamousB.beneficialthoughtheirinventorsarelessfamousC.notusefulbecausetheirinventorsarelessfamousD.notusefulthoughtheirinventorsarefamous2.ProfessorJoanMcLean’scourseaimsto_____.A.addcolorandvarietytostudents’campuslifeB.informstudentsofthewindshieldwiper’sinventionC.carryouttherequirementsbyMountainUniversityD.preparestudentstotrytheirowninvention3.TommyLee’sinventionoftheunbreakableumbrellawas_________.A.noteventuallyacceptedbytheumbrellaproducerB.inspiredbythestorybehindthewindshieldwiperC.duetohisdreamofbeingcaughtinarainstormD.notrelatedtoProfessorJoanMcLean’slectures4.Which0fthefollowingcanbestserveasthetitleofthispassage?AHowtoHelpStudentstoSellTheirInventionstoProducers?BHowtoDesignaBuilt-inDeviceforCleaningtheWindow?CShouldn’tWeKnowWhoInventedtheWindshieldWiper?DShouldn’tWeDevelopInventionCoursesinUniversities?
Housesfalldown.Treesfallover.LargeholesforminthegrounD.CouldAlaskabesinking?That’swhatsomevillagersinAlaskahavebeenaskingthemselvesrecentlyandscientiststhinktheyknowwhy.WarmertemperaturesmaybecausingAlaska’sfrozengroundtothaw解冻.About85percentofAlaska’slandsurfacehaspermafrost永久冻结带.Permafrostsupportsthegroundaboveit—includingtreeshousesandroads.Butwhyisthepermafrostthawing?Somescientistssaythathuman-causedpollutionisleadingtoglobalwarming.AndmostscientistsagreethatAlaskahasbeengettingwarmer.Theysaythatthewarmertemperatureiscausingpermafrosttothawinsomeareas.Thethawingpermafrostcancauseproblemsforpeopleplantsandanimals.Thecollapsing倒塌isaprobleminthevillagesinAlaskawhicharebuiltonpermafrostandsomeofthemmayhavetomovetosafergroundwherethereisnopermafrost.TheAlaskantownofGlennallensawitsoldpostofficecollapsE.AndaccordingtoJamesWaltersapermafrostexpertattheUniversityofNorthernIowahouse-movingcompanieshavebeenverybusy.MeltingpermafrostcanalsodestroytreesandforestsWalterssaiD.WhenholesinthegroundformtreesfallintothemanddiE.Thiscouldturnaforestintoaswamp沼泽andanimalswhichneedtheforestswillhavetomoveelsewherE.Themeltingcouldcausesevereproblems.WalterssaysThiscouldtakehundredsofyearsbutintheendAlaskawilllookquitedifferentfromwhatitlookslikenow.1.Whichofthefollowingcanbeusedasthebesttitleofthepassage?A.Alaska—AFrozenLandB.IsAlaskaSinking?C.PollutionandGlobalWarmingD.AlaskaIsPolluted2.Themainreasonwhypermafrostisthawingisthat______.A.thetemperatureinAlaskaisrisingB.peopleinAlaskadon’ttakecareofpermafrostC.toomanyhousesarebuiltonpermafrostD.peopleinAlaskapollutedpermafrost3.ThefollowingaretheresultsofmeltingpermafrostEXCEPT______.A.holesforminthegroundB.aforestwillbeturnedintoaswampC.someanimalshavetogoelsewhereD.morewaterwillbeneededbypeopleandanimals4.WhichofthefollowingisNOTtrueaccordingtothepassage?A.Whenpermafrostmeltshouseswillfalldown.B.House-movingcompaniesarebusybecausetheirhousesareindanger.C.Tostoppermafrostmeltingisaverydifficultproblem.D.MostofAlaska’slandsurfacehaspermafrost.
Toplistsarelecturingpeopleoneverythingfrom100placestovisitto100bookstoread.Aren'tyoujusttiredofbeingtoldwhattodowithyourtime?Nowyouhavealisttoendalllists!Takealookatthefollowingtwoexamplesfromthelistof101thingsnottodoSwimwithDolphins海豚?Swimmingwithdolphinsisoneoftheworld'smostprofitabletouristactivities.Howevernoteverydolphinwillwelcomehavingtheirbusytiringdayinterruptedbytouristsscreamingandpushingaroundtheminthewater.Worseyetwhendolphinsgettooneartotheboatsloadedwithtouriststheycouldgetcaughtupinropesandkilledbypropellers螺旋桨.Here'salittlesecret.Dolphinslooklikesmilingatyoubutactuallythey'rejustopeningtheirmouths.GotoSeetheMonaLisa?Theremustbesomethingaboutthemysterious神秘的smilE.The6millionpeoplewhovisittheladyintheLouvreeveryyearcan'tallbewrongafterall.Buttheycanbequiteannoyingstandinginfrontofyou;holdinguptheircamerastopreventyoufromseeinganything.Infactitishardforyoutoseethepaintingclearlybecauseyouhavetostayawayfromitforsecurityreasons.Afterqueuingforhoursmanytouristscanremaininfrontofthepaintingonlyfor15secondsatmost.Ifthemysteriousladyinthepictureknewherfateshewouldn'tjustbesmilingshe'dbelaughing.SostilllongtoseetheMonaLisa?Ifyouwanttofindoutmoreaboutthelistread101ThingsNOTtoDoBeforeYouDiE.Visitwww.not2dobeforeidiE.co.ukandbuythebookata20%discount.1.Accordingtothepassageswimmingwithdolphins________.A.istheworld'smostpopulartouristactivityB.givesfuntobothtouristsanddolphinsC.willmaketouristsbusyandtiredD.cancausedangertodolphins2.WhatdoestheauthorthinkaboutgoingtoseeMonaLisa?A.ItiswrongtogoandseethemysterioussmilE.B.ItisnotassatisfyingasexpecteD.C.Fifteensecondsinfrontofthepaintingisenough.D.QueuingforhoursisworthwhilE.3.Thelistof101thingsnottodoismademostprobablybecauseitsauthor________.A.thinksitboringtodothethingssuggestedbyotherlistsB.believesotherlistsarenothumorousenoughC.intendstopersuadepeopletoreadmorelistsD.wantstoprovidealistdifferentfromotherlists4.Whatisthemainpurposeofthepassage?A.Toadvertiseabook.B.TointroduceawebsitE.C.Tocommentonpopularlists.D.Torecommendtouristactivities.
Aswegetoldermostofusworryaboutgreyhairwrinklesandmaintainingayouthfulbody.Butpeopleoftendon’trealizethevoiceneedslookingafter.HereMr.Rubinavoiceexpertrevealshowtokeepyourvoiceyouthful.DrinkmorefluidandavoidspicyfoodYouneedwaterforthevocalcords声带tovibrate振动well.Thebodymustbekepthydratedenoughtomakethevocalcordsoperatewell.Drinking1.5litersofwateradayatintervalsof15minutesisveryimportant.Mr.RubinadvisesavoidingfoodswithanannoyingeffectonthestomachsuchasonionschilifizzydrinksandchocolatE.RestthethroatandtalkregularlyThevocalcordscanbescaredifyouuseyourvoiceduringabadcough.Ifyouhaveacaseoflaryngitis喉炎withacoldyoushouldrestyourvoiceforadayortwoandseekmedicaladvicE.Simplystayingsociableandusingyourvoiceisveryimportant.Asolderpeoplegetlessmobiletheycanbecomesociallyisolatedandspeakless.saysMr.Rubin.TheelderlyneedtocommunicatewithpeoplemorE.Byusingthevocalcordstheyenabletheageingprocesstoslowdown.ImproveyourpostureGoodpostureisessentialtokeepingthevoiceyoungsowe’dbetterstandproperly.ExercisehelpsyoutakedeeperbreathsasitmeansthereisbetterairflowthroughthevoiceboxproducingastrongertonE.SingintheshowerThisisoneofthebestwaystopreserveyourvoiceasitkeepsthelarynxmusclesstrongwhilethesteamlubricates使润滑thevoicebox.SingingisgymnasticsforthevoicesaysMr.Rubin.JoiningachoirisoneofthebestwaystopreserveayouthfultonE.60.Mr.Rubingivesusadviceon.A.waystokeepusfromagingB.waystokeepourvoiceyouthfulC.waystotalkwithotherpeopleD.preventionofdiseasescausedbytalkingtoomuch61.WhichofthefollowingstatementsisTRUEintheopinionofMr.Rubin?A.Takingmoreonionscankeepushealthy.B.Professionalsingers’voicestendtoagequickly.C.ThesteamcandogreatharmtothevoicE.D.Weshouldstandproperlytokeepourvoiceyouthful.62.Toprotectthevoicetheoldpeopleshould.A.getlessmobileB.lieinbedmoreC.avoidusingthevoiceD.communicatewithothersmore63.Whatcanwelearnfromthetext?A.MostpeoplehaverealizedtheimportanceofprotectingvoicE.B.It’shardtokeepthevocalcordsstrongthroughexercisE.C.Shoutingnowandthenbenefitsourvocalcords.D.Singingintheshowerisamongthebestwaystokeepourvoiceyouthful.
Howlonghas3-Dtechnologybeenaround?Mostofusmightthinkofcrowdsofteenagersina1950’smoviehousewatchingBwanaDevilin3-D.But3-Dtechnologymadeitsfirstappearanceonthescenein1838withthefirststereoscope体视镜.Andthefirstactual3-Dmoviewasa1903filmcalledLeAriveed’unTrain.Althoughithassuchalonghistorythetechnologyhasstillremainedbasedononesimpleprinciple-----tomake3-DeffectsyoumustfindawaytoprojecttwoslightlydifferentpicturestoeacheyE.Modern3-Dtechnologyworksbyrapidlyflickering闪动twoversionsofthemovieandprojectingthemontoeacheyE.Thebraindoestherestoftheworkcombiningthetwopicturestogetherintooneandgivingtheshowtheappearanceofdepththethirddimension.Butdoesthisexposureespeciallylongexposurescauseharmtothechild’sdevelopingbrainandvisualsystem?Unfortunatelylong-termstudiesonnewflickerdigital3-Dtechnologyandchildrenaren’tyetavailablE.Wedonotknowifregularordaily3-Dviewingoveryearsaffectsthedevelopingvisualsystemalthougholder3-Dmethodsbasicallydothesamethingandarenotconsideredharmful.Thequestionofpossibleharminmodern3-DuseinTVisreallybasedontwofacts:theamountoftimechildrenwillnowbewatching3-DTVeachdayandthesensitivitysomechildrenshowinreactionto3-Dviewing.Itisdifficulttomakeactuallabstudiesoflongerterm3-Dviewinginchildrenbecauseofthepossibleharmoftheexperiment.Researcherswillhavetowaituntil3-DTVtechnologyisalreadyinthemarketplaceforanumberofyearsthencheckheavy3-DTVwatchersandcomparethemwithnon-watchers.Witha3-Dtelevisiontechnologyinthehomewewillsoonbeabletoanswerthequestionofwhetherornotlongerandmorefrequentperiodsof3-Dexposurecausemorechangesinthevisualsystem.WemayfindthatthebiggerproblemistheintroductionofanewtechnologythatleadstoevenmoretimespentonTVratherthanplayingoutdoors.47.Accordingtothetext3-Dtechnology______A.wasrefusedbypeoplewhenitfirstappeareD.B.willsoonchangethewaywewatchTV.C.doesnogoodtoourvisualsystem.D.hasahistoryofnearly200years.48.Paragraph2ismainlyabout________A.how3-Dtechnologyworks.B.why3-DmoviesarepopularC.thehistoryof3-Dtechnology.D.theinfluenceof3-Dtechnology.49.What’sthemethodsuggestedinparagraph4?A.TowaitandseeB.TocarryoutlabstudiesC.Tostopmaking3-DmoviesD.Toimprove3-Dtechnology50.Theauthor’spurposeinwritingthetextisto_______A.askchildrennottowatch3-DmoviesB.discussif3-Dviewingisharmfultochildren.C.introducetheadvantagesof3-Dtechnology.D.predictthedevelopmentof3-Dtechnology.
WhenDrJaneGoodallwasakidgrowingupinEnglandshedreamedofonedaylivingamongwildanimals.ThatopportunitycamewhenGoodallwas26yearsolD.GoodallmovedtotheAfricancountryandspent25yearstherE.Whatshelearnedaboutchimpanzees黑猩猩fascinatedpeopleallovertheworlD.AfterstudyinganimalsforthefirstpartofhercareerJaneGoodallbeganworkingtoprotectnotonlychimpanzeesbutallcreatures.HernewbookHopeforAnimalsandtheirWorldisacollectionofconservation保护successstories.TimeForKidsTFKtalkedtoGoodallabouthernewbookandheradviceforyoungpeoplE.TFK:Whatinspiredyoutowriteabookaboutconservationsuccessstories?DrGoodall:BecauseofallmytravelsImeettheseextraordinarypeopleandhearabouttheseamazingprojectsandtheyreallydogivehopE.TheyshowthatwecanturnthingsarounD.TFK:Whyarethesestoriesimportant?Goodall:TherearealotofyoungpeoplewhoaregoingoutandwantingtosavespeciesandtheyaresooftentoldGiveup.It’shopeless.Andifwehavethatattitudethensoontherewillbenothingleft.TFK:Howshouldkidswhowanttohelpgetstarted?Goodall:JoinRootsandShoots.ItgivesthemanopportunitytointeractwithotheryoungpeoplE.Thewebsitesatwww.rootsandshoots.orgisawayforthemtolearnmorE.36.AccordingtothepassageJaneGoodall______________.A.spent25yearsinAfricastudyingchimpanzeesB.isonlyinterestedinchimpanzeeresearchC.wroteanewbookaboutwhatshelearnedaboutchimpanzeesD.findsithopelesstoprotectwildanimals37.IntheinterviewDrGoodallwasaskedquestionsabout__________.A.hercareerasabiologistB.thedevelopmentofherresearchC.hernewbookandheradvicetokidsD.herrecenttriptoAfrica38.DrGoodallwrotetheconservationstories___________.A.togivehopetopeoplewhowanttosavespeciesB.towarnpeopleofthedangeroflosingwildanimalsC.toinstructchildrenonanimalconservationD.toletpeopleknowaboutawebsite39.WheredidGoodallgrowup?A.AmericaB.FranceC.BritishD.Canada
BadteethcanbepainfulandworsE.Theycanevenbedeadly.Infections感染ofthegums牙龈andtheteethcancausebacteria细菌togointothebloodsystem.Thosebacteriacanincreasethechanceofaheartattackandworsentheeffectsofotherdiseases.Andadultsarenottheonlyonesatrisk.Forexamplein2007doctorsintheWashingtonareasaidaboydiedwhenatoothinfectionspreadtohisbrain.Theysaiditmighthavebeenpreventedhadhereceivedthedentalcare牙齿保健heneedeD.HewastwelveyearsolD.ExpertsattheNationalInstitutesofHealthsaygooddentalcarestartsatbirth.Breastmilktheysayisthebestfoodforthehealthydevelopmentofteeth.Breastmilkcanhelpslowthegrowthofbacteriaandacidproductioninthemouth.Butdentistssayababy'sgumsandearlyteethshouldbecleanedaftereachfeeding.Useaclothwithalittlewarmwater.DothesameifababyisfedwithabottlE.Expertssayifyoudecidetoputyourbabytosleepwithabottleonlygivethechildwater.Whenbabyteethbegintoappearyoucancleanthemwithawettoothbrush.Dentistssayitisimportanttofindsofttoothbrushesmadeespeciallyforbabiesandtousethemverygently.Theuseoffluoride氟化物toprotectteethiscommoninmanypartsoftheworlD.Forexampleitisoftenaddedtodrinkingwatersupplies.Thefluoridemixeswithenamel法琅质thehardsurfaceonteethtohelppreventholesfromforming.32.Accordingtothepassagebadteethcanbe____________.A.painfulB.deadlyC.preventiveD.incurable33.Thewriterusestheboy'sdeathasanexampletoshowthat_______.A.notonlyadultsbuttheyoungmaysufferfromteethproblemB.babieswithbadteethcaneasilydieC.thedoctorsshouldberesponsibleforthecaseD.theboywasnotfedwithhisbreastmilk34.What'sthemainideaofparagraph4and5?A.Howtodevelopbabies'teeth.B.Whytoprotectbabies'teethC.Howtokeepbabies'teethcleanD.Whytokeepbabies'teethclean35.Thepassagetellsusthat_______.A.EnamelismostwidelyusedtoprotectteethintheworldB.BadteethmayaffectthehealthofadultsandtheyoungC.Breastmilkcancurebabies'badteethD.Babies'teethshouldbebrushedonceperday
Ameteorite陨石flewfastacrosstheskyandexplodedovercentralRussiaonFridayrainingfireballsoveravastareaandcausingashockwavethatsmashedwindowsdamagedbuildingsandinjuredl200peoplE.PeopleheadingtoworkinChelyabinskheardwhatsoundedlikeanexplosionsawabrightlightandthenfelttheshockwavE.AccordingtoRussianspaceagencyRoscosmosthefireballtravellingataspeedof30kmpersecondhadburntverybrightlyacrossthehorizonleavingalongwhitetrailthatcouldbeseenasfaras200kmaway.CaralarmswentoffthousandsofwindowsshatteredandmobilephonenetworksweredisrupteD.IwasdrivingtoworkitwasquitedarkbutitsuddenlybecameasbrightasifitweredaysaidViktorProkofiev36aresidentofYekaterinburgintheUralsMountains.IfeltlikeIwasblindedbyheadlights.Themeteoritewhichweighedabout20tonsandmayhavebeenmadeofironenteredEarth’satmosphereandbrokeapart30-50kmabovegroundaccordingtoRussia’sAcademyofSciences.TheenergyreleasedwhenitenteredtheEarth’satmospherewasaboutseveralthousandtonstheacademysaidthepowerofasmallatomicweaponexploding.NodeathswerereportedbuttheEmergenciesMinistrysaid20000rescueandclean-upworkersweresenttotheregionafterPresidentVladimirPutintoldEmergenciesMinisterVladimirPuchkovtoeasethedisruptionandhelpthevictims.TheInteriorMinistrysaidaboutl200peoplehadbeeninjuredatleast200ofthemchildrenandmostfrombrokenpiecesofglass.Whileeventsthisbigarerareanimpactthatcouldcausedamageanddeathcouldhappeneverycenturyorso.Unfortunatelythereisabsolutelynothingwecandotostopimpacts.51.Whendidthemeteoriteincidenthappen?A.Atmidnight.B.Intheearlymorning.C.Inthelatemorning.D.Intheevening.52.Accordingtothetextthemeteoriteexplosioncaused_________.A.somedeathsB.roadaccidentsC.communicationproblemsD.buildingcollapse53.TheRussiangovernment’sresponsetotheincidentwas________.A.alittleslowbuteffectiveB.quickandseriousC.coldandslowD.quickbutineffective54.Itcanbeinferredthatthelosscausedbymeteorites_________.A.isnearlyunavoidableB.happenseveryfewyearsC.canbeavoidedD.ishardtoestimate
Thejourneytothemoonhadbeenthefirststeptowardfutureexploration探险inspacE.ThedistancebetweentheMoonandEarthisveryshortindeedwhencomparedwiththedistancesbetweenEarthandtheotherplanets.MarsthenearestplanettoEarthismillionsofmilesaway.Travelingtotheplanetswillbeman’snextaim.Suchtravelswillbemorechallengingthanthetriptothemoonandcertainlymoreadventurous.RecentlytwoAmericanspaceshipsVikings1and2landedonMarstryingtodiscoverwhetherthatplanethasanylifeonit.SofarthesignsoflifeonMarshasneitherconfirmed确认norruledout.RussianshavediscoveredthatthesurfaceofVenus金星issohotthatitisalmostcertainthatthereisnolifetherE.AlsotheatmosphereofVenusisextremelydense稠andthepressureisnearlyahundredtimesgreaterthanthatoftheEarth’satmospherE.ScientistsbelievemanmayfindplanetswhichhavethesameconditionsasthosewehaveonEarthbutmanshouldrealizeEarthwillbehisonlyhomeforalongtimeandbegintoloveandcareforit.5.Accordingtothepassagetravelingtotheplanetswillbe________.A.mucheasierandevenmoreinterestingB.farmoreexcitinganddangerousC.man’sfinalaimD.man’sfirststep6.WhichofthefollowingisNottrue?A.Marsisnearertotheearththanthemoon.B.ThemoonismuchnearertotheearththanMars.C.OfalltheplanetsMarsisthenearesttotheearth.D.Alltheplanetsaremuchfarthertotheearth.7.Fromthepassagewecanguess_____.A.thereislifeonMarsB.thereisnolifeonMarsC.theatmosphereofMarsisnotsodenseasthatofVenusD.scientistswillhavelittlehopetofindtheanswers8.Mancanliveonundertheconditionsof_______.A.muchtoohotsurfaceB.thesamepressureaswegetonearthC.normalatmosphereaswehaveonearthD.bothB.andC.
SeoulAdangerousnewbirdfluinSouthKoreahasspreadnationwidedespiteeffortstomakeonthevirus.Authoritieshavekilled2.8millionhouseholdchickensandduckssincetheoutbreakbeganandthefluhasalsokilleddozensofBaikaltealandothermigratorybirds.Asyettherearenoreportsofhumaninfections.ScientistsarepuzzlingoverwheretheH5N8fluneverbeforeseeninahighlypathogenic病原的formoriginated.PortlandOregonAtinychub鲦鱼hasbouncedbackfromnearextinction灭绝.TheU.S.FishandWildlifeServiceFWSsayspopulationsoftheOregonchubarehealthyenoughtoremovethe9-cm-longfishfromitslistofthreatenedandendangeredwildlife.Lastweek’sannouncementmarksthefirsttimeanendangeredfishhasrecoveredenoughtobedelistedAfterthe1940sthechubpopulationsdroppedsharplyfromhabitatdamagebypollutionanddams.WhenthefishwaslistedbyFWSin1993onlynineremained.Predation捕食bylarge-mouthbassandothernon-nativefisheswasthelargestthreattotheremainingchub.SincethentheOregonDepartmentofFishandWildlifeandothergroupsstarted20newpopulationsofthechubinpredator-freepondsChangestodammanagementhaveloweredthethreattoremaininghabitat.MexicoCityTheaxolotlsalamander’sonlyknownhomeinthewildtheXochimilcocanalsofMexicoCityhasbecomeincreasinglypollutedbutrecentreportsofthesalamander’sextinctionhavebeenoverstated.Twoweeksafterannouncingthatmonthsofsearchingthecanalshadn’tturnedupanyaxolotlsscientistsinMexicoCityhavesomegoodnewstwooftheuniquesalamanderswerespottedon4FebruaryThere’sbeenanalarmingreductioninpopulation.saysLuisZambranoabiologistattheNationalUniversityofMexicobutIcanguaranteethatisnotyetextinctinthewild.60.Whichsectionofamagazinedoesthepassageprobablycomefrom?A.AroundtheWorldB.Health＆DietC.EndangeredSpeciesD.Energy＆Environment61.whichofthefollowingtitleswouldmostprobablyfitthebankbox?A.OregonChubSwimmingoffEndangeredSpeciesListB.OregonChubPutontheEndangeredSpeciesListC.PollutionandDamManagementThreateningOregonChubD.Predator-freePondsSettoBeBuiltforOregonChub62.wecanlearnfromthepassagethat_________.A.thepopulationofsalamandersisontheriseB.measureshavebeentakentopreserveOregonchubC.theXochimilcocanalsaretheonlyhometothesalamanderD.scientistsaresureaboutwhatcausednationwideNewBirdF1u
Ablackholeisaplaceinspacewheregravitypullssomuchthatevenlightcannotgetout.ThegravityissostrongbecausematterhasbeensqueezedintoatinyspacE.Thiscanhappenwhenastarisdying.Becausenolightcangetoutpeoplecan’tseeblackholes.Spacetelescopeswithspecialtoolscanhelpfindblackholes.Thespecialtoolscanseehowstarsthatareveryclosetoblackholesactdifferentlyfromotherones.Blackholescanbebigorsmall.Scientiststhinkthesmallestblackholesareassmallasjustoneatom.Theseblackholesareverytinybuthavethemassofalargemountain.Massistheamountofmatterorstaffinanobject.Anotherkindofblackholeiscalledstellar星球黑洞.Itsmasscanbeupto20timesmorethanthemassofthesun.TheremaybemanystellarmassblackholesinEarth’sgalaxy.Earth’sgalaxyiscalledtheMilkyWay.Thelargestblackholesarecalledsupermassive超大质量黑洞.Theseblackholeshavemassesthataremorethanonemillionsunstogether.Scientistshavefoundproofthateverylargegalaxycontainsasupermassiveblackholeatitscenter.ThesupermassiveblackholeatthecenteroftheMilkyWaygalaxyhasamassequaltoaboutfourmillionsunsandwouldfitinsideaverylargeballthatcouldholdafewmillionEarths.Scientiststhinkthesmallestblackholesformedwhentheuniversebegan.Stellarblackholesaremadewhenthecenterofaverybigstarfallsinuponitselforfallsapart.WhenthishappensitexplodedpartofthestarintospacE.Scientiststhinksupermassiveblackholesweremadeatthesametimeasthegalaxytheyarein.AblackholecannotbeseenbecausestronggravitypullsallofthelightintothemiddleoftheblackholE.ButscientistscanseehowthestronggravityaffectsthestarsandgasaroundtheblackholE.ScientistscanstudystarstofindoutiftheyareflyingaroundororbitingablackholE.Whenablackholeandastarareclosetogetherhigh-energylightismadE.Thiskindoflightcannotbeseenwithhumaneyes.Scientistsusesatellitesandtelescopesinspacetoseethehigh-energylight.31.Thegravityofablackholemaybecomesostrongthatlightcannotgetoutwhen____________.A.thestarisgoingtodieB.specialtoolsareusedonitC.otherstarscomeclosetoitD.itisseenfromthespacetelescopes32.AccordingtothepassagewhichofthefollowingisNOTtrue?A.A.blackholecanbeverytinybutextremelyheavy.B.Thegravityofablackholeholdsalllightinitscenter.C.Scientistsobservehigh-energylightthroughtheirowneyes.D.SomesmallblackholescameintobeingasearlyastheuniversE.33.Whichcanbeinferredfromthepassage?A.EverygalaxymusthaveablackholE.B.A.galaxyisthecenteroftheuniversE.C.A.galaxyconsistsofalargegroupofstarsandplanets.D.Earth’sgalaxyiscalledtheMilkyWay.34.WhatdoesthelastsentenceinParagraph5suggest?A.NeitherthesunnortheearthisasheavyasablackholE.B.ThereisonlyonesupermassiveblackholeatthecenteroftheMilkyWay.C.ThesupermassiveblackholehadexistedbeforetheMilkyWaywasformeD.D.Thereisareasonwhythelargeblackholesarecalledsupermassive.35.Thelasttwoparagraphmainlyfocusonthequestionof_________.A.whatablackholeisB.howblackholesformC.howbigblackholesareD.howscientistsknowaboutblackholes
Asshockingastheideaofbabybirdsgrowingupinacigarette-filledhomesoundsanewstudysuggeststhatsomebirdsmaybenefitfromputtingthestufffromcigarettebutts烟蒂intotheirnests.Thenicotine尼古丁remaininginsmokedfilters滤嘴mayserveasanaturalinsecticide杀虫剂drivingharmfulinsectsawayfromthenestsandthebabybirdslivingwithin.Tobaccoplantsproducenicotinebecauseitdefendsagainstinsectsthatwouldotherwiseeattheplants.Thebuttsareundoubtedlysmelly.Butbirdsareactuallyquitefondofsmellychemicalssuchasthosefoundinaromatic芳香的plants.Somenest-buildingspeciesregularlyfilltheirnestswithfresharomaticspossiblybecausetbechemicalsaregoodfortheimmunesystemorthedevelopmentofthechicks.Alternativelytheplantchemicalsmightactasinsecticides.InthestudyresearchersattheAutonomousUniversityofTlaxcalainMexicosetupheattrapswhichattractharmfulinsectsin55nestsaroundMexicoCity.Sometrapswerelinedwiththestuffinsmokedcigarettefilters.Theotherswerelinedwiththestufffromunsmokedcigarettefilterswhichdidnotcontainnicotineandothersmokingby-products.Whetherthenestheldeggschicksornothingtheunsmokedcigarettetrapscollectedmoreharmfulinsectssuggestingthatitisthechemicalsthatdroveharmfulinsectsaway.Inasecondexperimenttheresearcherscollected28housesparrownestsand29housefinch朱雀nestsfromMexicoCityimmediatelyafterthechicksflewoutforfooD.TheyfoundthatthemoresmokedfilterstufffilledanestthefewerharmfulinsectsithaD.Themissingpieceofthepuzzleiswhetherthereducednumberofharnffulinsectsinthenestsactuallyprovidedanybenefittothechicks.Itisalsounclearifnicotineoranotherchemicalfoundincigarettesmayhaveturnedtheharmfulinsectsoutofthenests.If'theresultsholdthenthisstudyisanexampleofwildlifeadaptationtoUrhanization--oratleastevidencethatbirdsaresmartandcanstillfollowtheirnosesinurbanenviromnents.67.Whatmaybethefimctionofnicotineincigarettebuttsforbirds?A.Todriveharmfulinsectsawayfrombirdnests.B.Toprovidebuildingmaterialsforbirdnests.C.Toprotecttheplantsfrombeingeatenbyinsects.D.Toattractbabybirdstostayinthenests.68.Whatisthefirstexperimentaimedat?A.ProvingthatheattrapsattractharmfulinsectsinMexicoCity.B.Comparingsmokedcigarettefilterswithunsmokedones.C.Analyzingwhatisproducedfromsmokedcigarettefilters.D.Studyingwhatitisthatdrivesharnffulinsectsaway.69.Whatcanyouinferfromthepassage?A.Birdstendtouseinsecticidetoprotectthebabybirds.B.Nicotineistheonlychemicalthatdrivesharmfulinsectsaway.C.Someinsectsareafraidofsmellychemicalsinaromaticplants.D.Unsmokedcigarettetrapsattractmoreharmfulinsects.70.Wherecouldyoupossiblyseethepassage?A.Inasciencereport.B.Inanurbanizationessay.C.Inatobaccoadvertisement.D.Inananti-smokingbrochurE.
Plantsarefloweringfasterthanscientistspredicted预测inreactiontoclimatechangewhichcouldhavelongdamagingeffectsonfoodchainsandecosystems.Globalwarmingishavingagreateffectonhundredsofplantandanimalspeciesaroundtheworldchangingsomelivingpatternsscientistssay.IncreasedcarbondioxideCO2intheairfromburningcoalandoilcanhaveaneffectonhowplantsproduceoxygenwhilehighertemperaturesandchangeablerainfallpatternscanchangetheirpatternsofgrowth.Predictingspecies’reactiontoclimatechangeisamajorchallengeinecologysaidtheresearchersofseveralU.S.universities.Theysaidplantshadbeenthekeyobjectofstudybecausetheirreactiontoclimatechangecouldhaveaneffectonfoodchainsandecosystemservices.ThestudypublishedontheNaturewebsiteusesthefindingsfromplantlifecyclestudiesandexperimentsacrossfourcontinentsand1634species.Itfoundthatsomeexperimentshadunderestimated低估thespeedoffloweringby8.5timesandleafingby4times.Acrossallspeciestheexperimentsunder-predictedthespeedoftheadvance—forbothleafingandflowering—thatresultsfromtemperatureincreasesthestudysaiD.ThedesignoffutureexperimentsmayneedtobeimprovedtobetterpredicthowplantswillreacttoclimatechangeitsaiD.PlantsarenecessaryforlifeontheEarth.Theyarethebaseofthefoodchainusingphotosynthesis光合作用toproducesugarfromcarbondioxideandwater.Theyletoutoxygenwhichisneededbynearlyeveryorganismontheplanet.Scientistsbelievetheworld’saveragetemperaturehasrisenbyabout0.8℃since1900andnearly0.2℃everytenyearssince1979.Sofareffortstocutemissions排放ofplanet-warminggreenhousegasesarenotseenasenoughtopreventtheEarthheatingupbeyond2℃thiscentury—apointscientistssaywillbringthedangerofachangeableclimateinwhichweatherextremesarecommonleadingtodroughtfloodscropfailuresandrisingsealevels.1.WhatisthekeyinformationtheauthorwantstogiveinParagraph1?A.Plants’reactiontoweathercouldhavedamagingeffectsonecosystems.B.Theincreasingspeedoffloweringisbeyondscientists’expectation.C.Climatechangeleadstothechangeoffoodproductionpatterns.D.Foodchainshavebeenseriouslydamagedbecauseofweather.2.WecanlearnfromthestudypublishedontheNaturewebsitethat.A.plants’floweringis8.5timesfasterthanleafingB.thereare1634plantspeciesonthefourcontinentsC.scientistsshouldimprovethedesignoftheexperimentsD.theexperimentsfailedtopredicthowplantsreacttoclimatechange3.Scientistspayspecialattentiontothestudyofplantsbecause.A.theycanprovetheclimatechangeclearlyB.theyareveryimportantinthefoodchainsC.theyplayaleadingroleinreducingglobalwarmingD.theyaregrowingandfloweringmuchfasterthanbefore4.Whatcanbeinferredfromthelasttwoparagraphsabouttheworld’stemperature?A.Ithasrisennearly0.2℃since1979.B.Itschangewillleadtoweatherextremes.C.Itis0.8℃higherin1979thanthatof1900.D.Itneedstobecontrolledwithin2℃inthiscentury.
Formorethan40yearsscientistshavesoughttolearnhowwellhumanbeingscanadapttolongperiodsinspacE.TheInternationalSpaceStationcontinuestoprovidevaluableknowledgeaboutspaceflight.ButanearlierspacestationSkylabhelpedmakethecurrentspaceprojectpossiblE.CanadianastronautChrisHadfieldsangaboardtheInternationalSpaceStationonMay122013.Hismusicvideohasbecomeextremelypopular.TheastronautplayedhisownversionofDavidBowie’ssongSpaceOddity.Heperformedwhilefloatingweightlesslywithimagesofplanetearthandspaceappearinginthewindowbehindhim.ChrisHadfieldrecentlyreturnedhomeafternearlyfivemonthsonthespacestation.ForhimthelongflightproducedahitvideoonYouTubeandnomajorphysicalproblems.But40yearsagoscientistsdidnotknowhowhumanswouldreacttolong-termspaceflight.TofindoutNASAtheAmericanspaceagencylaunchedSkylabinMay1973.OvernearlyayearthreeteamsofastronautsvisitedSkylabforstaysofbetween28to84days.TheylearnedhowpeoplereacttoextendedperiodsinspacE.GeraldCarrcommandedSkylab4.HespokeataNASAeventmarkingthe40thanniversaryofSkylab’slaunch.Hesaidthatthelossofthebody’smusclemasswasamainconcern.AstronautsonSkylabusedexerciseequipmenttostaystrong.Theastronautsspenttheirworkdayscarryingoutexperimentsincludingbiomedical生物医学的research.MarshallPorterfieldisthedirectorofNASA’sSpaceLifeandPhysicalSciencesDivision.HesaystheSkylabastronauts’understandingoftheirownabilitytodealwithlong-termspaceflightcontinuestohelpcurrentastronauts.NASAsaysthenextstepforlifeawayfromEarthisayear-longspacestationmissionsetfor2015.29.WhywasChrisHadfield’ssongsospecial?A.ItwasperformedinspacE.B.Itwascreatedbyanastronaut.C.Itwasaveryfamiliarsong.D.Itwasfirstsungbyafamoussinger.30.WhichofthefollowingbestdescribesthephysicalconditionofChrisHadfieldafterhisreturn?A.WorsE.B.Better.C.Normal.D.Weaker.31.ForwhatpurposedidNASAlaunchSkylab?A.ToresearchonwhetherhumanbeingscouldstayinspacE.B.Togatherupinformationonsettingupaspacestation.C.TostudythechangesinthebodywhenstayinglonginspacE.D.TofindoutthepossibilityofdoingexperimentsinspacE.32.Whatcanwelearnfromthelastparagraph?A.SkylabisstillinusetoexplorethespacE.B.TheresearchresultsonSkylabarestillvaluablE.C.SkylabismoreadvancedthantheInternationalSpaceStation.D.TheSkylabastronautsmadegreatcontributionstobiomedicalresearch.
Computervirusesareelectronicprogramsthatdestroyinformationonacomputerorcausethecomputertostopworking.computerexpertssaytheIloveyouvirusisoneofthemostdangeroustheyhaveeverseen.ItbeganspreadingMayFourthandquicklyattackedcomputersinmorethantwentycountries.Itmayhavecausedalossof10billiondollarsindestroyedinformationandlostcomputerworktimE.ThevirusgotineachcomputeraselectronicmailthatappearedtobesentfromafriendwithtitleIloveyou.Whenthecomputeruseropenedthemessagethevirusdidseveralthings.Firstitfoundthecomputer’saddressbookandimmediatelymailedcopiesofitselftoeachcomputeraddresslisteD.Itdestroyedelectronicpictureskeptinthecomputer’smemory.Italsosearchedforsecretwordsusedtoprotectcomputerinformationandattemptedtostealthem.TheIloveyouvirusquicklyspreadthroughcomputersusedingovernmentsandprivatebusinesses.Electronicaddressbooksinthesecomputersquicklysentcopiesofthevirustootherbusinesscomputers.WithindaystheIloveyouvirushadspreadfromcomputertocomputeraroundtheworlD.Expertsincomputercrimearestillinvestigatingtheincident.TheyhavefollowedelectronicevidencetothePhilippineswheretherearenolawsagainstthiskindofcomputeractivity.ItisacrimeinmanycountriesbutnotinthePhilippines.InternationallegalexpertssaynewlawsareneededthatbancomputerprogramsliketheIloveyouvirus.TheysaypeoplewhoinventandspreadharmfulprogramsmustbepunisheD.Computerexpertssayasmanyas50000computervirusesmaynowexistandtheywarncomputeruserstobecarefulaboutwhatelectronicmailtheyopen.29.HowdoestheIloveyouvirusspread?A.Byfindingthecomputer’saddressbookandmailingcopiesofitself.B.Bydestroyingtheprogramsthatprotectcomputerinformation.C.Bysendingvirusfrombusinesscomputerstogovernmentcomputers.D.Bysearchingforsecretwordsandattemptingtostealthem.30.Whatcanweinferfromthetext?A.TheIloveyouvirusisn’tasdangerousasthoseeverseen.B.TheIloveyouviruscanspreadthroughtheinternetquickly.C.TheIloveyouviruscopieselectronicpicturesinthecomputers.D.TheIloveyouvirusdoesn’texistinthePhilippines.31.Whatdocomputerexpertssuggest?A.Lawsshouldbemadeagainstcomputerviruses.B.Thegovernmentpaythosewhosufferedaloss.C.Computerusersbecarefulwhenopeninge-mails.D.Thosewhoinventedthevirusbepunished
CookingfoodoverasmokyfireisfoundeverywhereintheworlD.ItisoftendifficulttofindwoodforthefirE.Peoplewhodonothavewoodmustspendlargeamountsofmoneyoncookingfuel.Howeverthereisamucheasierwaytocookfoodusingenergyfromthesun.Solarcookersorovenshavebeenusedforcenturies.A.Swissscientistmadethefirstsolarovenin1767.TodaypeopleareusingsolarcookersinmanycountriesaroundtheworlD.Peopleusesolarovenstocookfoodandtoheatdrinkingwatertokillbacteriaandotherharmfulorganisms.Therearethreekindsofsolarovens.Thefirstisaboxcooker.Itisdesignedwithaspecialwallthatshinesorreflectssunlightintothebox.Heatgetstrappedunderapieceofglassorplasticcoveringthetopofthecooker.A.boxoveniseffectiveforslowcookingoflargeamountsoffooD.Thesecondkindofsolarovenisapanel嵌板式cooker.Itincludesseveralflatwallsorpanelswhichdirectlyreflectthesun’slightontothefooD.Thefoodisinsideaseparatecontainerofplasticorglassthattrapsheatenergy.Peoplecanbuildpanelcookersquicklyandwithveryfewsupplies.Theydonotcostmuch.InKenyaforexamplepanelcookersarebeingmanufacturedforjusttwodollars.Thethirdkindofsolarovenisaparabolic抛物线的cooker.Ithasroundedwallsthataimsunlightdirectlyintothebottomoftheoven.Foodcooksquicklyinparabolicovens.HoweverthesecookersarehardtomakE.Theymustbere-aimedoftentofollowthesun.Paraboliccookerscanalsocauseburnsandeyeinjuriesiftheyarenotusedcorrectly.Youcanmakesolarovensfromboxesorheavypaper.TheywillnotcatchfirE.Paperburnsat232degreesCelsius.A.solarcookernevergetsthathot.SolarovenscookfoodatlowtemperaturesoverlongperiodsoftimE.Thispermitspeopletoleavefoodtocookwhiletheydootherthings.TolearnmoreaboutsolarcookingyoucanwritetoSolarCookersInternational.Thepostaladdressisnineteen-nineteenTwenty-FirstStreetSacramentoCalifornianine-five-eight-one-oneUSA.Oryoucanvisitthegroup’sInternetWebsitE.Theaddressiswww.solarcooking.org.32.Howlongisthefirstsolarcookersinvented?A.About1767yearsB.Morethan300yearsC.Morethan250yearsD.Lessthan250years33.Inwhichofthefollowingcolumncouldwefindthepassage?A.DevelopmentReportB.AgriculturalReportC.HealthReportD.EducationReport34.WhichofthefollowingisTRUE?A.Thefirstsun-cookerwasmadebyaSwisssoldierB.ParaboliccookerscanbedangeroussometimesC.Sun-cookersoftengethotterthan232℃D.Itismoreexpensivetocookwithasun-cookerthanonfire35.Whichofthefollowingcouldbethebesttitleofthepassage?A.DifferentWaysofCookingB.TheHistoryoftheSolarCookers.C.HowtoChooseSolarCookers.D.CookingMealswiththeSunforFuel
InadrydesertliesasmallseeD.Itistheseedofacactus仙人掌plant.TheseedliesonthegrounD.Itliesthereforoneyear.Itiswaiting.Thecactusseedmustwaitforrain.Butnotjustanyrain.Itwaitsforaheavyrain.Itneedsaheavyrainsoitcangrow.Onedayaheavyrainfalls.Itmakestheseedsprout.Thesmallseedthensendsouttinyroots.Therootsgodownintotheearth.A.newcactusbeginstogrow.ThegrowingcactusneedsfooD.ItsfoodisintheseeD.Theseedfeedsthecactusasitgrows.Thecactussendsoutmoreroots.Theygodeeperintotheearth.Theretheyreachwater.Otherrootsarenotsodeep.Theytakewaterfromlightrains.SoonthefoodintheseedisgonE.ThenewcactusmustnowmakeitsownfooD.Thecactustakesinlightfromthesun.Ittakesinairandwater.ThecactusturnstheseintofooD.Fortwoormoreyearsthecactusgrows.Thenitisreadytoflower.Thecactusproducesabud花蕾.Thebudisthestartofaflower.Thebudhashairsonit.Thehairshelpkeepanimalsaway.Thenonedaythereisaflower.Butitwillnotstayforlong.Thecactusneedstosaveitsfoodandwater.Soitkeepsitsfloweronlyafewdays.Thenseedsfallfromtheflower.TheyfalltothegrounD.Heretheylieforayear.Theylieandwaitforrain.Onedaytheywillgrowintoanewcactus.60.Whydoestheseedofacactuslieontheground?A.Towaitforaheavyraintogrow.B.Toavoidbeinghurtbyanimals.C.Towaitforastrongwindtosenditfaraway.D.Tocontinueitsgrowthafterfallingfromthecactus.61.Thegrowingcactusgetsitsfoodfrom______.A.thewindB.theseedC.theheavyrainD.thedryearth62.WhatcanwelearnfromParagraph3?A.Therootsofthecactuscan’tgodeepintotheearth.B.Thecactuscanmakewaterfromtheair.C.Thecactusstopsgrowingwhenitsfoodisusedup.D.Thecactuscancreatefoodwithlightwaterandair.63.Thehairsonthebudofthecactusareusedfor______.A.takinginmoreairB.absorbingmorewaterC.notbeingeatenbyanimalsD.notgettingburntbylight
Owningasmartphonemaynotbeassmartasyouthink.ItmayletyousurftheInternetlistentomusicandsnapphotoswhereveryouarebutitalsoturnsyouintoaworkaholicitseems.A.studysuggeststhatbygivingyouaccesstoemailsatalltimestheall-singingall-dancingmobilephoneaddsasmuchastwohourstoyourworkingday.ResearchersfoundthatBritonsworkanadditional460hoursayearonaverageastheyareabletorespondtoemailsontheirmobiles.ThestudybytechnologyretailerPixmaniarevealstheaverageUKworkingdayisbetween9and10hoursbutafurthertwohoursisspentrespondingtoorsendingworkemailsormakingworkcalls.Morethan90percentofofficeworkershaveemail-enabledphoneswithathirdaccessingthemmorethan20timesaday.Almostoneintenadmitsspendinguptothreehoursoutsidetheirnormalworkingdaycheckingworkemails.Someworkersconfesstheyareoncallalmost24hoursadaywithnineoutoftensayingtheymakeworkemailsandcallsoutsidetheirnormalworkinghours.Theaveragetimeforfirstcheckingemailsisbetween6amand7amwithmorethanathirdcheckingtheirfirstemailsinthisperiodandaquartercheckingthembetween11pmandmidnight.GhadiHobeikamarketingdirectorofPixmaniasaidTheabilitytoaccessliterallymillionsofappskeepincontactviasocialnetworksandtakephotosandvideoaswellastextandcallhasmadesmartphonesinvaluableformanypeoplE.Howevertherearedrawbacks.Manycompaniesexpecttheiremployeestobeoncall24hoursadaysevendaysaweekandsmartphonesmeanthatpeopleliterallycannotgetawayfromwork.Themoreconstantlyincontactwebecomethemoreisexpectedofusinaworkcapacity容量.54.Whatcanweconcludefromthetext?A.AllthatglittersisnotgoldB.ItneverrainsbutpoursC.EverycoinshastwosidesD.It’snogoodcryingoverspiltmilk55.Theunderlinedwordaccessinginthethirdparagraphcanbereplacedby________.A.callingB.reachingC.gettingD.using56.Whichofthefollowingistrueaccordingtothetext?A.TheaverageUKworkingtimeisbetweennineandtwelvehoursB.Nine-tenthsspentoverthreehourscheckingworkemailsC.One-fourthchecktheirfirstmailbetween11pmandmidnight.D.Theaveragetimeforfirstcheckingemailsisbetween6amand8am.57.What’sthemainideaofthetext?A.workaholicslikesmartphones.B.Smartphonesbringaboutextrawork.C.smartphonesmakeourlifeeasier.D.Employersdon’tlikesmartphones.
AutumnmeansdifferentthingstodifferentpeoplE.Italldependsonyourpersonality.saidBritishnaturalistRichardMabey.PersonalityshapesyourviewoftheseasonhesaiD.Youmayseeitasafading-awayapacking-up结束orasatimeofpackinginanothersense---theexcitedgatheringofresourcesbeforealongjourney.IfthisistrueperhapsittellsusalittleaboutforinstanceThomasHoodthe19thCenturyEnglishpoet.AboutNovemberhewrote:NowarmthnocheerfulnessnohealthfuleaseNoshadenoshinenobutterfliesnobeesNovember!OntheotherhandanotherEnglishpoetJohnKeatsalreadysensinghewasseriouslyillwasinspiredbyalateSeptemberdaytopenoneofthemostfamouspoemsintheEnglishlanguageToAutumn.Hewrotetoafriendafterwardsthattherewassomethingcomfortingandhealingaboutit.AccordingtoRichardMabeyKeatshasthebiologicalevidenceonhissidE.Autumnisnotatimeofslowingdownbutatimeofnewbeginningsandgreatmovementsofcreatures.ForexamplejustatthemomentthatKeats'sgatheringswallowsinToAutumnaredepartingforAfricamillionsofcreaturesarefleeingfromthefrozennorthlikeIcelandGreenlandandRussiatowinteralongtheeastandsouthcoastsofBritain.Accordingtoscientistsbeforefallingtheleavestransfertheirchlorophyll叶绿素andcarbohydrates碳水化合物intothewoodypartsofthetreeforsafe-keepingoverwinter.Whatremainsarethenaturalantioxidants防老剂intheleaves:theyellowandorangecarotenoids类胡萝卜素andanotherprotectivechemicalspeciallyproducedforautumnthebright-redanthocyanin花青素.Highcolorisnotasignalofdeterioration退化anddeclinebutofdetox排毒的abilityandgoodhealth.AcenturyafterKeatstheAmericanpoetLorenEiseleywroteinhisjournal:Supposewesawourselvesburninglikemaplesinagoldenautumn.Andthatwecouldbreakuplikeautumnleavesdroppingtheirsubstancelikechlorophyll.Wouldnotourattitudetowardsdeathbedifferent?51.FromThomasHood’spoemwemayinferthat_______.A.hesufferedalotfromcoldNovemberB.hemissedtheshiningsummerdaysverymuchC.hehadanegativeattitudetowardsautumnD.heenjoyedbutterfliesandbeesverymuch52.Inautumnleavesturnyellowbeforefallingbecause______.A.theycan’tbearthefreezingB.theycan’tgetenoughwaterfromthewoodpartC.chlorophyllandcarbohydrateshavebeenlostthroughleavesD.chlorophyllandcarbohydrateshavecomebacktothewoodpart53.Fromthepassagewecanlearnthat________.A.autumnhasdifferentfacesindifferentpeople’seyesB.JohnKeatswasagoodbiologistaswellasapoetC.allcreaturesmovefromthecoldnorthtoBritainforwinterD.Thethreepoetswereonlyknownfortheirpoemsaboutautumn54.WhichwordcanbestdescribeLorenEiseley’sattitudetowardsautumn?A.FearfulB.OptimisticC.DoubtfulD.RealistiC.55.Whatdoestheunderlinedsentencemean?A.Mancanneverlivelongjustasleavesmustleavethetreeannually.B.Manisdifferentfromautumnleaveswhichwillcomeagainthenextspring.C.Manshouldhaveapositiveattitudetowardsdeathquitedifferentfromautumnleaves.D.ManshouldtreatdeathcalmlyjustlikeautumnleavesfalltothegrounD.
Insummermillionsofpeoplewillheadforthebeach.Andwhiletheoceancanbeagreatplacetoswimandplayitmayalsobeusefulinanotherway.Somescientiststhinkthatwavescouldhelpmakeelectricity.Haveyoueverbeenonasurfboardorboatandfeltyourselfbeingliftedupbyawave?Orhaveyoujumpedinthewaterandfelttheenergyaswavescrashedoveryou?askedJamieTayloroftheWaveEnergyGroupattheUniversityofEdinburghinScotland.Thereiscertainlyalotofenergyinwaves.Scientistsareworkingonusingthatenergytomakeelectricity.Mostwavesarecreatedwhenwindsblowacrosstheocean.Thewindsstartoutbymakinglittleripples波纹inthewaterbutiftheykeeponblowingthoseripplesgetbiggerandbiggerandturnintowavesTaylorsaid.Wavesareoneofnature’swaysofpickingupenergyandthensendingitoffonajourney.Whenwavescometowardstheshorepeoplecansetupdamsorotherbarricadestoblockthewaterandsenditthroughalargewheelcalledaturbine涡轮.Theturbinecanthenpoweranelectricalgenerator发电机.TheUnitedStatesandafewothercountrieshavestarteddoingresearchonwaveenergyanditisalreadybeingusedinScotland.Theresourceishuge.Wewillneverrunoutofwavepowerbesideswaveenergydoesnotcreatethesamepollutionasotherenergysourcessuchasoilandcoal.Oceanscoverthreequartersoftheearth’ssurface.Thatwouldmakewavepowerseemperfectforcreatingenergyaroundtheworld.Therearesomedrawbackshowever.JamieTaylorsaidthatwavepowerstillcosttoomuchmoney.Hesaidthatitseffectsonanimalsintheseawerestillunknown.Pluswavepowerwouldgetinthewayoffishingandboattraffic.WithmoreresearchhowevermanyoftheseproblemsmightbeovercomeTaylorsaid.DemandforenergytopowerourTVsandcomputersdriveourcarsandheatandcoolourhomesisgrowingquicklythroughouttheworld.Findingmoreenergysourcesisveryimportantfortraditionalsourcesofenergylikeoilandgasmayrunoutsomeday.Inthefuturewhenyouturnonalightswitchanoceanwavecouldbeprovidingtheelectricity!24.WhichofthefollowingisNOTtrue?A.Wavepowercoststoomuchmoney.B.Waveenergycreatesthesameamountofpollutionasotherenergysources.C.Wavepoweraffectsfishingandboattraffic.D.Wavepowermayaffectmarineanimals.25.Wecaninferfromthepassagethat______.A.findingnewenergysourceslikewaveenergyisimportantB.waveenergyisaresourcethatwillneverrunoutandisusedallovertheworldC.wavepowerisperfectforcreatingenergyaroundtheworldD.wavepowerdoesn’tcreateanypollution.26.Theunderlinedworddrawbacksprobablymeans______.A.regretsB.adventuresC.disadvantagesD.difficulties27.Whatcanbethebesttitleforthepassage?A.HowtoGetElectricitybyWaves.B.A.HugeResourceofEnergy.C.CanWavesMakeElectricity?D.TheDisadvantagesofWaveEnergy.
ThousandsofcitiesaroundtheglobeturnedofftheirlightsforanhourtomarkEarthHour2014asymbolicshowofsupportfortheenvironmentorganizedbytheWorldWideFundforNaturE.SincethemovementbeganinSydneyAustraliain2007ithasspreadtomorethan7000citiesacrossmorethan160countries.Singaporecontinuestoholdoneoftheworld'slargestlights-offeventsdrawingaround9000peoplethisyeartoMarinaBaySandsacommercialcentertypicallyawashinelectricity.TomarktheeventactorsAndrewGarfieldJamieFoxxEmmaStoneandagroupofotherfamousstarsfromTheAmazingSpider-Man2moviewereintown.OthericoniclandmarksthatfelldarkincludedthePetronasTwinTowersinKualaLumpurBangkok'sWatAruntempletheEmpireStateBuildinginNewYorktheEiffelTowerinParisSydneyOperaHouseRedSquareinMoscowtheBird'sNestinBeijingandHongKongHarbor.Asthemovementhasgrownmoreorganizationsandbusinesshavecommittedtoswitchingofftheirlightsinsupportofeffortstoreducetheirenvironmentalfootprint.InSingaporeatleast600organizationsandcompaniesagreedtoeitherswitchofftheirlightsorparticipateinmovementstousefewerplasticbagstakeshortershowersturnuptheirair-conditioningunitsorswitchtoLEDlighting.ThisyeartheWorldWideFundforNaturewhichfirstlaunchedworldwideEarthHouralsolaunchedEarthHourBlueacrowdfundingplatformaimedatraisingmoneyforenvironmentalprojectsaroundtheglobE.OnMar.26aprojecttostoptheillegalwildlifetradeinAsiabyprovidingassistancetowildliferangersbecamethefirstonetoreachitstargetof$20000byrelyingcompletelyoncrowdfunding.Thehour-longeventhaslittleifanyimpactonelectricityconsumptionbutasanawarenessraisingeventithasregisteredsuccess.InastatementtomarkSaturday'seventAndyRidleyCEOandCo-FounderofEarthHoursaidAsia’srapidlygrowingdigitalpresenceisanaddedbonusthathashelpedpowerourmovement.68.Whichofthefollowingmayserveasthebesttitleofthepassage?____A.EarthHour2014B.SaveOurEarthC.Lights-OffEventD.EarthHourBlue69.Wecaninferfromthereportthat_______A.AustraliaandSingaporewerethefirsttwocountriestolaunchEarthHourB.Morethan7000citiesfrom160countriestookpartinEarthHour2014C.SomefamousmoviestarsfromTheAmazingSpider-Man2wereinvitedtoSingaporetocelebratetheeventD.TheWorldWideFundforNaturefirstorganizedEarthHourworldwide70.HowmanydifferentspecificplacesarementionedinthetexttohaveparticipatedinEarthHour2014acrosstheworld?A.7B.8C.9D.1071.BasedonthereportwhichofthefollowingstatementsisNOTcorrect?____A.MarinaBaySandsisacommercialtownlocatedinSingaporeB.EarthHourBlueisaplatformintendedtocollectmoneyforenvironmentalprojectsaroundtheglobeC.AndyRidleyisthechiefexecutiveofficerofEarthHourandoneofitsfounders.D.LEDlightingisanenergy-savingdevicewhichdoesn’tuseelectricity
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