2025屆浙江省樂清市樂成公立寄宿學(xué)校英語高三第一學(xué)期期末學(xué)業(yè)水平測試試題含解析

2025屆浙江省樂清市樂成公立寄宿學(xué)校英語高三第一學(xué)期期末學(xué)業(yè)水平測試試題考生須知：1．全卷分選擇題和非選擇題兩部分，全部在答題紙上作答。選擇題必須用2B鉛筆填涂；非選擇題的答案必須用黑色字跡的鋼筆或答字筆寫在“答題紙”相應(yīng)位置上。2．請(qǐng)用黑色字跡的鋼筆或答字筆在“答題紙”上先填寫姓名和準(zhǔn)考證號(hào)。3．保持卡面清潔，不要折疊，不要弄破、弄皺，在草稿紙、試題卷上答題無效。第一部分（共20小題，每小題1.5分，滿分30分）1．—HowcanIwakeupsoearly?—Setthealarmat5:00am.,youwillmakeit.A．a(chǎn)nd B．butC．or D．so2．Whenthegirldid________thecouragetotellherparentswhathadhappened,unfortunatelyherownfamilydidn'tbelieveher.A．workout B．workup C．workat D．workon3．Wethetopofthemountainbutforthisawfulweather．Itrainedallday．A．willreach B．wouldreach C．havereached D．wouldhavereached4．—Ibelieveitistheonlysolutiontothisproblem.—That’sdebatable,Ithink.Icanfiveothersolutionsasgoodasthat.A．comeupwith B．makeupwith C．liveupwith D．keepupwith5．Asateacher,youhaveto_____yourmethodtosuittheneedsofslowerchildren.A．display B．testC．a(chǎn)djust D．transfer6．IliketheseEnglishsongsandthey________manytimesontheradio.A．taught B．havetaughtC．a(chǎn)retaught D．havebeentaught7．---How’syourtouraroundtheNorthLake?Isitbeautiful?---It________be,butitisnowheavilypolluted.A．willB．wouldC．shouldD．must8．That’s

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lightB．cometolifeC．comeacross9．________onlinepaymentissafe,peoplewillbemorelikelytolinktheirbankcardstoWeChat.A．EventhoughB．AsthoughC．EversinceD．Aslongas10．Whenintrouble，remembertostaycalm，andeverythingwillwell．A．turnback B．turnup C．turndown D．turnout11．Theyhaveleadingexpertsinthisfield,andthat's____they'vemadeimportantprogress.A．whereB．whyC．whetherD．who12．Iwonder________theequipmentwillbeavailableintendays.A．that B．when C．whether D．where13．—Accordingtomymother,itisagoodideatohavesomechickensoupwhenyouhaveacold．—_____,scientistsagreewithher．A．SoonerorlaterB．OnceinawhileC．BelieveitornotD．Tobeexact14．—Ifeltitverydifficulttocarryontheworkallbymyself.—Icouldhavehelpedyou,butyou_____meto.A．hadn’tasked B．didn’task C．haven’tasked D．don’task15．NASAhasmadea________thatourearthhasnothreatassociatedwiththefilm2012whichisbasedonpuremyths.A．clarification B．classification C．identification D．presentation16．Ifyouweretohaveafewminutesfree,I______theopportunitytoaskyouonemorequestion.A．wouldappreciate B．wouldhaveappreciatedC．weretoappreciate D．hadappreciated17．Policementhinkthatwherethereisviolence,drugswithdamagingeffectsonkidsarealways______it．A．beyond B．before C．behind D．besides18．Thepoliceareinvestigatingthecompany,threeof________managershavealreadybeenarrested.A．whose B．thatC．which D．where19．Taughtinamoreprofessionalway,you_________theswimmingskillmuchbetter.A．mightmaster B．wouldhavemasteredC．canhavemastered D．couldmaster20．He________inauniversityforfiveyears,butnowherunsacompanyofhisown.A．hastaught B．hadtaughtC．taught D．hasbeenteaching第二部分閱讀理解（滿分40分）閱讀下列短文，從每題所給的A、B、C、D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。21．（6分）Wanted,SomeoneforaKissWe’relookingforproducerstojoinusinthesecondofLondon100FM.You’llworkonthestation’smusicprogrammes.Musicproductionexperienceinradioisnecessary,alongwithrichknowledgeofmoderndancemusic.Pleaseapply(申請(qǐng))inwritingtoProducerVacancies,Kiss100.FatherChristmasWe’relookingforaveryspecialpersonpreferablyover40,tofillourFatherChristmassuit.Workingdays:EverySaturdayfromNovember24toDecember15andeverydayfromDecember17toDecember24exceptSunday,10:30—16:00.Excellentpay.Pleasecontact(聯(lián)系)theEnterpriseShoppingCenter,StationParade,Eastbourne.AccountantsAssistantWhenyoujoininourRevenueAdministrationUnit,youwillbeprovidingassistancewithinallpartsoftheRevenueDivision,dealingwithpostandothergeneralduties.IfyouareeducatedtoGCSEgradeClevelwewouldliketotalktoyou.Thispositionisequallysuitableforaschoolleaverorforsomebodywhohasofficeexperience.WealdenDistrictCouncilSoftwareTrainerIfyouareaged24-45andhaveexperienceinteachingandtraining,youcouldbethepersonwearelookingfor.Youshouldbegoodatthecomputerandhavesomeexperienceinprogrammewriting.Youwillbeallowedtomakeourdecision,andtodesigncoursesaswellaspresentthem.Payupwardsof￡15,000fortherightperson.PleaseapplybysendingyourCV(簡歷)toMrsR.Oglivie,PalmlaceLimited.1、Whoshouldyougetintouchwithifyouhopetoworkinaradiostation?A．ProducerVacancies,Kiss100. B．MrsR.Oglivie,PalmlaceLimited.C．TheEnterpriseShoppingCentre. D．WealdenDistrictCouncil2、WelearnfromtheadsthattheEnterpriseShoppingCentreneedsapersonwho__________________.A．isagedbetween24and40 B．maydosometrainingworkC．shoulddealwithgeneralduties D．canworkforaboutamonth3、Whichpositionisopentorecentschoolgraduates?A．Producer,LondonKiss. B．FatherChristmas.C．AccountantsAssistant D．SoftwareTrainer4、WhatkindofpersonwouldprobablyapplytoPalmaceLimited?A．OnewithGCSEgradeClevel. B．Onewithsomeofficeexperience.C．Onehavinggoodcomputerknowledge. D．Onetrainedinproducingmusicprogrammes.22．（8分）Thetimesarechanging.OnThursdayOctober13th,singer-songwriterBobDylanwasawardedtheNobelPrizeinLiterature,markingthefirsttimethehighly-eyed-onliteraryawardhasgonetosomeonewhoismainlyseenasamusician,andgivingrisetoheateddiscussions.The75-year-oldwontheprize“forhavingcreatednewpoeticexpressionswithinthegreatAmericansongtradition”,theSwedishAcademysaid.“For54yearshehasbeenatit,reinventinghimself,”saidSaraDanius,theacademy’spermanentsecretary.“BobDylanwritespoetryforthecar.Butit’sperfectlyfinetoreadhisworksaspoetry.”AndwhilemanyDylan’sfanshavefoundgreatdelightatthenews,othersonlineandintheliterarycommunityarecrosswiththeCommittee,sayingtheawardhasskippedoverfictionwritersforthesecondyear.NewYorkTimesBookRevieweditorPamelaPaulsaiditwasgoodnewsbutpointedouthowmany“deserving”noveliststhereare.DirectorMartinScorseseputoutastatementsayinghewas“overjoyed”thatDylanwasawardedtheprize.“Dylan’spoetry,hismusicalgenius,hasmeantsomuchtomepersonallyandtogenerationsofpeoplearoundtheworld,”Scorsesesaid.“Hisworkhasinfluencedandshapedculture,andhehasneverstoppedexploringandgrowingasanartist.TheNobelCommitteehasgivenDylanaformofrecognitionthatfitshisroleinourculture—inworldculture.”DylanwonaPulitzerPrizein2008forhis“greatinfluenceonpopularmusicandAmericanculture”.He’sthefirstAmericantowintheliteraryNobelsinceToniMorrisonin1993.1、WhydoesBobDylan’swinningtheNobelPrizecausehealeddiscussions?A．Hecreatedpoeticexpressions.B．Heisknownasamusician.C．Hereinventshimself.D．Heis75yearsold.2、WhichisclosestinmeaningtotheunderlinedpartinParagraph4?A．a(chǎn)rethankfultoB．a(chǎn)resatisfiedwithC．a(chǎn)reangrywithD．a(chǎn)reworriedabout3、WhatcanweknowaboutDylanaccordingtoMartinScorsese?A．DylaninfluencesMartinalot.B．Dylanishappywiththeaward.C．Dylanisapoetratherthanamusician.D．Dylanbenefitsalotfromworldculture.4、Whatisthepassagemainlyabout?A．AbriefintroductiontoBobDylan.B．ThereasonforBobDylan’ssuccess.C．BobDylan’sinfluenceonAmericanculture.D．DifferentviewsonBobDylan’swinningtheNobelPrize.23．（8分）Sydney'sRoyalBotanicGardensaretostartawarongray-headedflyingfoxes.ThesesuperbatshaveinvadedoneofAustralia’smostfamouspublicspaces.Officialshavesaidtheanimalsaredestroyingtreesandhavetomoveon.TheseunwantedguestsatSydney’sRoyalBotanicGardenslookliketinyfoxeswithwings.Officialshaveestimatedthereareabout11,000ofthemlivinginthepicturesqueharbor-sidepark.Afterinspectingdamagetodozensoftreestheynowbelievetherearetwiceasmanyaspreviouslythought.Brancheshavebeenbreakingundertheweightofthesefurryinvadersandtheirdroppingshavebeenpoisoningplants.Helpmaywellbeathand,however,intheshapeoftheordinarygarbagebin.Thegardens’directorDr.TimEntwistlehopestheunpleasantsoundsofcrashingbinlidswillagitatetheflyingfoxesandforcethemtomoveon.“Thewaytodisturbthemistousenoises,sowe’veusedtheloudnoisesmadebyrubbishbinsinthepast.Youcanalsousespeakersaslongasyoumovethenoisearound,andwhatwe’lldoishaveaseriesofnoises,atthebeginningandendoftheday.Whatwe’vefoundinthepastisthattheflyingfoxesleavethegardensandgosomewhereelse,”saidTim.Thegray-headedflyingfoxisAustralia’slargestbat.Itfliesaroundatnightusingitseyesandapowerfulsenseofsmelltosearchforfruitandflowers.OfficialsattheRoyalBotanicGardensinSydneyhavesaidthey’reoptimistictheunwelcomecolonycanbeuprooted.Ifandwhenthebatsdomovetootherpartsofthecitytheywillofcoursethenbecomesomeoneelse’sproblem.1、Accordingtothepassage,Whydopeoplewanttogetridoftheflyingfoxes?A．Becausethegardenareimportantpublicplaces.B．Becausetheyarepollutingthecity.C．Becausemanygarbagebinshavebeendamagedbythem.D．Becausethey’rethreateningthesurvivaloftreesandotherplants.2、Inordertogetridoftheflyingfoxes,whatarepeopledoing?A．Theyareshootingthem.B．Theyareusingrubbishcontainers.C．Theyareshakingthetreeshard.D．Theyarecuttingsometreesdown.3、Whichofthefollowingcanreplacetheunderlined“agitate”inParagraph3?A．Excite B．killC．disturb D．discourage4、Whatdoesthewriterimplyfromthelastparagraph?A．Thebatswillstillstayinthegardens.B．Someareawillhavetodealwiththebats.C．Thegrey-headedflyingfoxofteneattreesD．Thedamagecausedbythebatsisserious24．（8分）Statistically,airtravelisbyfarthesafestwaytotravelandyoucanmakeflyingevensafer,justbyfollowingthesesimplerules．Asyourchancesofbeinginvolvedinanairaccidentarepracticallynil（零）,manyoftheserulesconcernwhatyoushouldandshouldn’tdotomakeyourjourneysaferwhenyouareintheair.●Flyonnon-stoproutesMostaccidentsoccurduringthetakeoff,climb,descentandlandingperiodofaflight,soflyingnon-stopreducesyourexposuretothesecomplicatedprocedures.●ChooselargeraircraftAlthoughsmallaircraftshaveverygoodsafetyrecords,thosewithmorethan30passengerseatsaredesignedtocomply（遵守）withmuchstricterregulationsandaretestedmoreregularlytomakesuretheystillcomply.Also,intheunlikelyeventofaseriousaccident,largeraircraftsprovideabetteropportunityforpassengersurvival.●Payattentiontothepre-flightsafetybriefing（簡報(bào)）Theinformationmayseemtoberepeated,butit'sworthlisteningtotheflightattendants.Andevenifyouhaveflownbefore,itdoesn'tmeanyouknoweverythingabouttheaircraftyou'reon,suchasthelocationoftheclosestemergencyexit.●StorethingssafelyNeverputveryheavyarticlesintheoverheadstoragebins.Theymayfalloutwhensomeoneopensthebinandcauseinjury.Also,thebinmaynotbeabletoholdheavierobjectsduringtheviolentmovementsofaircausedbythewind.●KeepyourseatbeltfastenedwhileyouareseatedCabincrewalwaystellyouthis,butit'simportant.Youcouldbeseriouslyinjurediftheplanehitstheviolentmovementofairunexpectedly.Alwaysfastenyourseatbeltifyouaretoldto.Thegeneralruleofflyingisthis:Ifyouaretoldtodosomething,doitfirstandaskquestionslater.●LettheflightattendantpouryourhotdrinksFlightattendantsaretrainedtohandlehotdrinkslikecoffeeorteainacrowdedaisleonamovingaircraft,soallowthemtopourthedrinkandhandittoyou.Neverasktotakeacoffeepotfromoneofthem.1、Whatisthegeneralreasonfortheseairsafetyrules?A．Whattodointheeventofacrash.B．Howtoavoidsuddenchange.C．Howtoimprovesafetywhileyouareflying.D．Howtoavoidinjury.2、Theunderlinedphrase"Thegeneralrule"inthefifthrefersto.A．a(chǎn)nythingtheflightstafftellyoutodoB．generalsafetyadviceC．walkingaroundtheplaneD．pouringhotdrinks3、WhichofthefollowingisNOTtrue?A．largerplaneshavemoresafetychecksandaresaferinanaccident.B．Take-offsaresaferonnon-stopflightsthanlanding.C．Everyaircraftisdifferent,sothesafetyproceduresmaybedifferent.D．Seatbeltsshouldbeworntoprotectagainstsuddenchange.4、Thebesttitleshouldbe.A．ThesafestwaytotravelB．AirsafetytipsC．Non-stopRoutesD．Howtotakeaplane25．（10分）Manypeoplewanttogrowtheirowngarden,buttheysimplydonothavetheroom.Donotworry.Thereisasolution.Considercontainergardening.Thegreatthingaboutcontainergardeningisthatyoucanuseavarietyofdifferentcontainers.Yousimplyhavetouseyourimagination.Youcouldcreateabeautifulgardenwiththingssuchascementblocks,hangingbaskets,claypots,orwindowboxes.Therearesomanyoptionswhenitcomestocontainergardening;itisonlylimitedbyyourimagination.Ofcourse,youwillwanttotakethefollowingintoconsiderationwhenyouarereadytobegincontainergardening,inorderforittobesuccessful.First,youshouldavoidanycontainersthathavebeenusedtostorechemicals,aswellastreatedwood.Thiscouldleadtothesuddendeathofyourflowersandleadtothefailureofyourcontainergardening.Withanycontainerthatyouchoose,youneedtoensurethatitallowsthewaterinittodrainwhennecessary.Soitmaybeessentialforyoutocreateholesinthecontainertohelpthisalong.Youshouldalsomakesurethecontainersareplacedonaraisedsurface,notuponthefloor,toensurethebestpossibledrainage.Ensurethatthecontainersyouchooseareappropriateinsizefortheplantsyouchoose,Youneedtopreventtherootsfromovergrowingthecontainer.Ifyoulikefreshveggies,youcouldconsidercontainergardeningwithvegetables.Thisrequiresaprocessthatdiffersfromthatofflowergardening.Talktoanemployeeatasupplystoreinyourarea,Theycanhelpyouchoosetherightcontainersforthevegetablesyouarewishingtogrow.1、Whichofthefollowingmaybeimpropermaterialsforcontainergardening?A．Claypots.B．Cementblocks.C．Treatedwood.D．Windowboxes.2、Whatdocstheunderlinedword"drain"inParagraph5mean?A．Toflowaway.B．Togiveoff.C．Topourdown.D．Toholdback.3、Comparedtoflowergardening,whatdoweknowaboutvegetablegardening?A．Itseemsmucheasier.B．Itrequiresmoretime,C．Itdemandsmorewater.D．Itneedsspecialcontainers.4、Whomaybeinterestedinthetext?A．Farmerswhoaregoodatgardening.B．Citizenswhoenjoygardening.C．Childrenwholikeoutdooractivities.D．Peoplewhohaveabigyard.第三部分語言知識(shí)運(yùn)用（共兩節(jié)）第一節(jié)（每小題1.5分，滿分30分）閱讀下面短文，從短文后各題所給的A、B、C和D四個(gè)選項(xiàng)中，選出可以填入空白處的最佳選項(xiàng)．26．（30分）閱讀下面短文，從短文后各題所給的四個(gè)選項(xiàng)（A、B、C和D）中，選出可以填人空白處的最佳選項(xiàng)，并在答題卡上將該項(xiàng)涂黑。Itwasabitter,coldeveninginnorthernVirginiamanyyearsago.Theoldmanwas____forarideacrosstheriver.Thewaitseemed____.Hiebodybecamestiff(僵硬的)fromthecoldnorthwind.Heheardthe____ofapproachinghooves(馬蹄)runningalongthefrozenpath.Anxiously,he___asseveralhorsemenroundedthebend.Heletthefirstonepassby____anefforttogethisattention.Thenanotherpassedby,andanother.____,thelastriderdrewnear.Theoldmancaughttherider’seyesandsaid,“Sir,wouldyou____givinganoldmanaridetotheotherside?”Reining(勒住)hishorse,theriderreplied,“Surething.Hop____.”Thehorsemangotoffandhelpedtheoldmanontothehorse.Hetooktheoldmannot____acrosstheriver,buttohisdestination.Astheynearedthetinybutcozycottage,thehorseman’s____causedhimtoinquire,“Sir,Inoticedthatyouletseveralotherriderspassby.I’mcurious___youwouldwaitandaskthelastrider.WhatifIhad____andleftyouthere?”Theoldmanreplied,“Ilookedintotheeyesoftheother___andimmediatelysawtherewasnoconcernformysituation.Itwouldhavebeen____eventoaskthemforaride.ButwhenIlookedintoyoureyes,kindnessandcompassionwere____.Iknewyourgentlespiritwould_____theopportunitytohelpme.”Thoseheartwarmingcomments____thehorsemandeeply.“I’mmost____forwhatyouhavesaid,”hetoldtheoldman.“MayI___gettoobusyinmyownaffairssothatIfailto____totheneedsofotherswithkindnessandcompassion.”withthat,ThomasJeffersonturnedhishorsearoundandmadehiswaybacktotheWhiteHouse.1、A．waiting B．searching C．preparing D．leaving2、A．wordless B．priceless C．careless D．endless3、A．number B．distance C．rhythm D．length4、A．stopped B．watched C．followed D．wandered5、A．beyond B．with C．through D．without6、A．Finally B．Luckily C．Sadly D．Slowly7、A．enjoy B．a(chǎn)void C．mind D．a(chǎn)dmit8、A．a(chǎn)head B．a(chǎn)board C．below D．a(chǎn)bove9、A．still B．yet C．even D．just10、A．courage B．determination C．curiosity D．bravery11、A．why B．when C．how D．where12、A．a(chǎn)greed B．changed C．escaped D．refused13、A．soldiers B．riders C．leaders D．enemies14、A．successful B．necessary C．useless D．impolite15、A．obvious B．missing C．hidden D．helpful16、A．order B．force C．a(chǎn)llow D．welcome17、A．a(chǎn)ffected B．touched C．injured D．shocked18、A．careful B．peaceful C．grateful D．powerful19、A．never B．a(chǎn)lways C．usually D．often20、A．stick B．lead C．point D．respond第二節(jié)（每小題1.5分，滿分15分）閱讀下面材料，在空白處填入1個(gè)適當(dāng)?shù)膯卧~或括號(hào)內(nèi)單詞的正確形式。27．（15分）ManypeoplemaythinktheForbiddenCity,orthePalaceMuseumasit’salsocalled,is1．old-fashionedmuseum.2．,inrecentyears,themuseumhasbeenworkinghard3．（promote）Chineseculturalheritageamongyoungpeople.Themuseum’sonlinestorenowoffersspecialculturalandcreative4．（product）.Forexample,in2014,itstartedtomakeT-shirtsthatlooklikeanemperor’scoat.Italsosoldearphonesthatlooklikethenecklaces5．（wear）byancientofficials.ThemuseumhasalsolaunchedanappcalledADayofanEmperor.Whenusing6．peoplearetaughtaboutaregulardayinthelifeofanemperoroftheQingDynasty.Lastyear,adocumentarytitledMastersintheForbiddenCity7．（become）popularonline.Thedocumentaryisaboutthepeople8．jobistorepairtherelicsinthemuseum.Manyoftheseworkersareyoung,andsomeareeven9．their20s.Someothermuseumsacrossthecountry,suchastheNationalMuseumofChina,10．（inspire）bythePalaceMuseum’seffortsinthepastfiveyearsandareworkingonsimilarprojectsoftheirown.第四部分寫作（共兩節(jié)）第一節(jié)短文改錯(cuò)（滿分10分）28．（10分）假定英語課上老師要求同桌之間交換修改作文，請(qǐng)你修改你同桌寫的以下短文。短文中共有10處錯(cuò)誤，每句中最多有兩處。錯(cuò)誤涉及一個(gè)單詞的增加、刪除或修改。增加：在缺詞處加一個(gè)漏字符號(hào)（∧），并在此符號(hào)下面寫出該加的詞。刪除：把多余的詞用斜線（＼）劃掉。修改：在錯(cuò)的詞下劃一橫線，并在該詞下面寫出修改后的詞。注意：1.每處錯(cuò)誤及其修改均僅限一詞；2.只允許修改10處，多者（從第11處起）不計(jì)分。China'shighereducationisdevelopingveryfast.Thenumberofcollegestudentsarequitesmallinthe1980s,andnownearlyfourteenmillionstudentsarestudyingincollegesanduniversities.WhydoesChina'shighereducationdevelopsuchquickly?Severalfactorscontributetoit.Firstofall,itsquickdevelopmentresultsChina'srapidsociallyandeconomicdevelopment.Throughthereformandopeningup,peoplehavebecomericherandhavemuchmoneytoinvestineducation.Secondly,ourgovernmenthadattachedgreatimportancetohighereducationandtakenoutpracticalmeasurestoencouragepeopletogotocollege.Beside,withthedevelopmentofsociety,moreandmorepeoplehopetoreceivinghighereducation.第二節(jié)書面表達(dá)（滿分25分）29．（25分）假定你是李華，你的英國朋友Jack在觀看《中國漢語橋》節(jié)目時(shí)，決定學(xué)習(xí)中國語言文化，希望你能給他一些建議。請(qǐng)你根據(jù)以下提示寫一封email.1.通過中國古典作品了解中國文化：2.借助電視節(jié)目以及報(bào)刊更好地了解中國國情；3.和中國朋友多溝通。注意：1.詞數(shù)100詞左右.2.可適當(dāng)增加細(xì)節(jié)，以使行文連貫.3.短文中不能出現(xiàn)與本人相關(guān)的倍息。參考詞匯：《中國漢語橋》：ChineseBridgeContest;中國古典作品:classicalliteratureDearJack,___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Yours,LiHua

參考答案第一部分（共20小題，每小題1.5分，滿分30分）1、A2、B3、D4、A5、C6、D7、A8、A9、D10、D11、B12、C13、C14、B15、A16、A17、C18、A19、B20、C第二部分閱讀理解（滿分40分）閱讀下列短文，從每題所給的A、B、C、D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。21、1、A2、D3、C4、C22、1、B2、C3、A4、D23、1、D2、B3、C4、B24、Spaceiswhereourfutureis—tripstotheMoon,Marsandbeyond.Mostpeoplewouldthinkthatasidefromcomets(彗星)andstars,thereislittleelseoutthere.But,sinceourspacejourneystartedwehaveleftsomuchtrash（垃圾）therethatscientistsarenowconcernedthatifwedon'tcleanitup,wemayallbeinmortal（致命的）danger.Thefirstpieceofspacejunkwascreatedin1964,whentheAmericansatelliteVanguardIstoppedoperatingandlostitsconnectionwiththegroundcenter.However,sinceitkeptorbitingaroundtheEarthwithoutanyconsequences,scientistsbecameincreasinglycomfortableabandoning（拋棄）thingsthatnolongerservedanyusefulpurposeinspace.Itisestimated（估計(jì)）thattherearenowover500,000piecesofman-madetrashorbitingtheEarthatspeedsofupto17,500milesperhour.Thejunkvariesfromtinypiecesofpaintchippedoffrocketstocameras,hugefueltanks,andevenodditemslikethemillion-dollartoolkitthatastronautHeidemarieStefanyshynPiperlostduringaspacewalk.Themajorproblemwiththespacetrashisthatitmayhit