江西省新余市重点中学2025届高考全国统考预测密卷英语试卷含解析

江西省新余市重点中学2025届高考全国统考预测密卷英语试卷注意事项1．考生要认真填写考场号和座位序号。2．试题所有答案必须填涂或书写在答题卡上，在试卷上作答无效。第一部分必须用2B铅笔作答；第二部分必须用黑色字迹的签字笔作答。3．考试结束后，考生须将试卷和答题卡放在桌面上，待监考员收回。第一部分（共20小题，每小题1.5分，满分30分）1．Wasitfromthelake______heoftenwentfishing______hesavedthedrowninggirl?A．that;thatB．where;whereC．where;thatD．that;where2．_______thatIwouldn’tsupportmyselfatthatmoment.A．IwasweakenoughB．IwastooweakC．SoweakwasID．SuchweakwasI3．Theproblem_______hewillhavehiscollegeeducationathomeorabroadremainsuntouched.A．howB．whetherC．thatD．when4．Nobodycangobackandstartanewbeginning,______anyonecanstartnowandmakeanewending.A．forB．andC．butD．so5．Mr.Greenwasveryfamouswhenhelivedthere.Thereis______tobesomeoneinthisdistrictwhoremembershim.A．content B．opposedC．bound D．restricted6．—Ineedtoadvertiseforaroommatefornextterm.—______?Maryisinterested.A．Whatfor B．WhynotC．Sowhat D．Whybother7．Theredsandgolds_____intoeachotherasthesunsank.Whatabeautifulsight!A．bumped B．pressedC．melted D．turned8．-Lateagain！Where_____________？-Sorry，I________________intheheavytraffic，orIwouldhavebeenhereearlier.A．wereyou；havegotstuck B．haveyoubeen；havegotstuckC．wereyou；gotstuck D．haveyoubeen；gotstuck9．ThisJanuarywillbeverypreciousforusbywhichtimewe________reviewingSeniorBookI.A．willfinish B．willhavefinishedC．havefinished D．willbefinished10．Takethemedicinerightaway!______ityesterday,youwouldbequiteallrightnow.A．Hadyoutaken B．WouldyoutakeC．Shouldyoutake D．Wereyoutotake11．Togetaslimfigure,Fannyhastriedmanyways,butinvain.Sonowsheisreducedanythingforsupper.A．tonoteating B．nottoeatC．nottoeating D．tonoteat12．—WhorecommendedNancyforthepost?—ItwasJames______admirationforherwasobvious.A．who B．that C．whose D．whom13．Morethanonedoctor_____involvedintherescuethattookplaceaftertheearthquake．A．wasB．isC．wereD．are14．WhenIwassmall,mymom________readmestoriesatnight.A．could B．shouldC．might D．would15．_____annoystheteachermostisthatallthestudentsaretooquietinclass.A．WhatB．ThatC．WhenD．Who16．___________theeffectofcultureshock,heistryingtoreadalotaboutitbeforegoingtoFranceforfurtherstudy.A．ToreduceB．ReducedC．ReducingD．Havingreduced17．Theaffairsofeachcountryshouldbebyitsownpeople.A．electedB．settledC．developedD．contained18．Distinguishedguestsandfriends,welcometoourschool,_____theceremonyofthe50thAnniversarythismorningareouralumni（校友）fromhomeandabroad.A．Attend B．Toattend C．Attending D．Havingattended19．InAustralia,manyroadsignsarenowbothinEnglishandChinese,______iteasierforChinesetouriststotravel.A．makingB．madeC．makeD．makes20．---Howoftendoyouworkout?---_________,butusuallyonceaweek.A．Havenoidea. B．Itdepends. C．Asusual. D．Generallyspeaking.第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。21．（6分）Plantsareboring.Theyjustsittherephotosynthesizing（光合作用）whileanimalshaveallthefun.Right?Notsomuch.Anewstudyhasfoundthatthereisalonghistoryofinteractionsbetweenantsandplants.Theantandplantco-evolution（协同进化）startedwithantsfeedingonplantsandplantsevolvingant-friendlyfeatures.Plantsmakeanumberofdifferentstructuresthatarespecificforantuse.Someplantshaveevolvedfeaturesthatpersuadeantsintodefendingthemfromattackfromotherinsectsandevenmаmmаlѕ.Тhеѕеіnсludеhollowthornsthatаntѕwillliveіnѕіdе,orехtranесtаr(琼浆)оnlеаvеѕorstemsfortheantstoeat.Someantswilljustcheatandtakethenectarandrun,butsomewillstickaroundandattackanythingthattriestohurttheplant.Otherplantsgetantstohelpthemmovetheirseedsaround,byprovidingthemwithrichfoodpacketsattachedtotheseeds.Theantwillpickuptheseedandcarryitaway,eatthefoodpacket,andleavetheseed-ofteninanutrient-richareawhereit'llgrowbetter,andsinceit'sfartherawayfromitsparent,theywon'thavetocompeteforresources.Butscientistsweren'tsurehowtheevolutionaryrelationshipbetweenantsandplantsgotstarted.Ifevolutionisanarmsracebetweenspeciesdevelopingwaystomakeuseoftheirneighbors,thenscientistswantedtoknowwhetherplantsorantsfiredthefirstshot.Itwasachicken-and-eggquestion,whetherthingsstartedwithantsdevelopingbehaviorstotakeadvantageofplants,orplantsevolvingstructurestotakeadvantageofants.Thehistoryofantsandplantsevolvingtogethergoesbacktothetimeofthedinosaurs,andit'snoteasytotellfromfossilswhofiredthefirstshot.However,itisaquestionoflittlesignificance.Scientistssaytheirstudymatersbecauseitprovidesalookathowthesewidespreadandcomplexinteractionsevolved.1、Someplantsattachfoodpacketstotheirseedsinorderto.A．rewardtheants B．makeafoolofantsC．providenutritionfortheseeds D．gettheseedsmovedaround2、WhatdoesParagraph2mainlytellus?A．Howplantsandantsinteract. B．Whatantsdotoprotectplants.C．Howplantsandantssurviveattacks. D．Whyplantsandantsneedco-evolution.3、Whichistrueabouttheevolutionaryrelationshipbetweenantsandplants?A．Antsdependedmoreuponplants. B．Itcausedaraceforbetterevolution.C．Howitgotstartedwasuncertain. D．Itwasoflittlevalueforfuturestudies.4、What'stheauthor’spurposeofwritingthepassage?A．Tointroduceascienceresearchmethod.B．ToinformreadersofalatestresearchfindingC．Toarousereaders'interestinscienceresearch.D．Tocriticizepeople'straditionalviewsaboutplants.22．（8分）ItmaybecommonknowledgethatwhatBritishpeoplecall“football”isknownas“soccer”intheUS,and“colour”inBritishEnglish(BrE)goeswithoutthe“u”inAmericanEnglish(AmE).ButaccordingtoachartmaderecentlybywebsiteGrammarCheck,thesearefarfrombeingtheonlydifferencesbetweenthetwocountries’useofEnglish.Thechartoutlined63ofthemaincontrastsbetweenBrEandAmE,fromthemorewell-known“lift/elevator”and“autumn/fall”tothelesser-known“garden/yard”and“petrol/gasoline”.Someofthevocabularymismatchesaresodifferentthattwopeopleinaconversationmayfailtounderstandeachother.Forexample，thetwocountrieshavedifferentnamesforcertainfood.“Biscuits“and“sweets”inBritainareknownas“cookies”and“candy”,respectively,intheUS.Butwhilegettingfoodnamesmixeduponlycausesconfusion,somemisunderstandingsmayleadtoembarrassmentifyou’renotcareful.IfaBritishmanintheUSisaskedtoshowupapartyin“pants”,there’sachancethathemightgetalotofstaresfromotherguests.“Pants”intheUKmeansunderwear.“Trousers”arewhatyouneedtoaskaBritishfriendtowearifyoudon’twantthemtocauseasceneamongyourfriends.However,evenif63isalreadyalot,therearestillmanydifferencesthatthechartfailedtocover.IfaUSgirlwalksintoaUKbarberandsays“Iwanttohavemybangsfixed”,forexample,itcouldtakeawhilebeforethehairdresserrealizeswhatshemeansisactuallyher“fringe”.1、Bypresentingthefirstparagraph,theauthormainlytellus.A．thechartismadebyGrammarCheckB．peoplearemuchmorefamiliarwith“lift/elevator”C．BrEandAmEaredifferentinspellingD．TherearemanydifferencesbetweenBrEandAmE2、IfaBritishmanisaskedtojoininapartyin“pants”,hemight.A．getintoanembarrassmentB．beattractiveamonghisfriendsC．bepuzzledatothers’dressesD．askforapairoftrousersinstead3、Whyistheexampleinthebarbermentioned?A．Toconfirmsomeexamplesareunknown.B．Tosupporttheauthor'sopiniononthetopic.C．ToindicatetheBritishareslowinunderstanding.D．Toshowthehairdresserisn’tfamiliarwith“bangs”.23．（8分）Companiesthatemployworkershaveaninterestinkeepingtheworkplacesafe.Job-relatedinjuriesaresomethingthatresponsibleemployersavoid.Theytakethetimeandusecompanyresourcestomakesurethatthepeoplewhocometoworkeachdayaresafe.Notonlydoesthismakegoodsensefromamoralstandpoint,butitalsomakesgoodfinancialsense.Ifaworkerisinjuredonthejob,itcoststhecompanyintermsoflostmamtours,increasedinsurancecosts,worker’scompensationpremiums（赔偿金）,andlegalposts.Productivityislostwhenotherworkershavetostopdoingtheirjobstodealwiththesituation.Evenaftertheinjuredworkerhasbeensenthomeortakentohospital,otheremployeesmaybeunfocusedorneedtotaketimeofffromworkintheresultoftheincident.Whenaworkplaceissafe,workersfeelmorecomfortableandconfidentwhentheyareinthatenvironment.Productivitygetsapromotion,andprofitsfollowsuit.Absencealsodropswhenemployerstakestepstocarryoutaneffectivesafetyprogram.Investinginagoodsafetyprogrambringswithitotherbenefitstoo.Whenemployeesfeelsafeintheworkplaceandabsenceratesarekeptdown,theycanfocusonservingthecompany’scustomersproperly.Manycompaniesofferproducesorservicesthataresimilartothosethatothercompaniescarryorprovide.Customerswilldecidewhichcompaniestheywanttodealwithbasedonwhichonetheyfeelprovidesthebestcustomerservice.Increasedabsencemeanslongerwaittimesandcustomersarequitepreparedtomoveontoanothercompanytheyfeelwillbeabletohelptheminamoretimelymanneriftheyarenotgettingthelevelofattentionthattheydeserve.Everyoneintheworkplacehasadutyandaresponsibilitytodowhatevertheycantokeeptheworkingenvironmentsafe.Managersshoulddealwithemployeeconcernsaboutsafelyissuesinanappropriatemanner.1、Whatbadeffectdoesanincidenthaveaccordingtothetext?A．Workersmayrefusetoworkagain.B．Thequalityofproductsmaydecline.C．Workersmaybehardtoconcentrate.D．Thecompanymayclosedown.2、WhatdoweknowaboutthesafeworkplaceformParagraph4?A．Itcaninspireworkers’creativity.B．Itcanbringworkersahigherpay.C．Itcanputanendtoworker’absence.D．Itcanbringtheemployermoremoney.3、Onwhatconditionwillthecustomersmoveontoanothercompanyaccordingtothetext?A．Iftheycan’tgetasaferproduct.B．Iftheyhavetowaitforalongtimetogetdeservedattention.C．Iftheyfeelthecompanycan’tprovideasaferworkplaceforthem.D．Iftheyfindthecompanyprovidesthesomeproductsasothersoffer.4、Whichofthefollowingcanbethebesttitleofthetext?A．HowEmployeesCanProtectThemselvesB．CompaniesAreEnsuringEmployees’SafetyC．WhySafetyIsImportantintheWorkplaceD．HowtoCreateaSaferWorkplace24．（8分）Asistradition,technologycompaniesfromaroundtheworldhaveflockedtoLasVegasfortheannualConsumerElectronicsShow.Therearethousandsofeye-catchingitemstoswoonover,whetheryou’reanerdornot.Hereareafewofthemostinteresting,excitingandpossiblylife-changingproductsseenattheshow,whichrunsfromTuesdaytoFriday.Item1YouthoughtyourcurvedTVwascool?TheLGSignatureOLEDTVRisa65-inch4KTVthatis,unlikeyourlameandrigidscreen,rollable,andcanretract(收回)intoitsbasewhenyou’renotenjoyingit.WhileyoucancontrolitusingeitherGoogleAssistantorAmazonAlexa,theTVRalsosupportsApple’sAirPlay2andHomeKit.Item2Gaminglaptopsaren’tnew,buttheyusuallylackpowercomparedtotheirbeefierdesktopcounterparts.Nvidia’slatestannouncementchangesthat,andbringsthedesktop-classpowerfoundinitsRTXlineofgraphicscardstolaptops.Morethan40laptopmodelswillturnupbytheendofthemonthwithRTXgraphicscardsinside,whichcanproducemorerealisticgraphicsandboostperformanceforthemostgamers.Item3Ifsleepingisharderthanitshouldbe,theDreembandmightbeabletohelpyoufigureoutwhatyou’redoingwrong.TheDreembandisafabric-coveredheadbandthatwrapsaroundyourheadandusesacombinationofsensorsliketheonesinyourAppleWatchtodetectvariousbiometricslikeyourheartrateandrespirationactivity.Italsousesboneconductiontocommunicateaudiocuestoyouprivately.Item4Samsung’sshownoffitsMicroLEDtechnologyinthepast,usingittobuildTheWall,a146-inchTV.Thecompany’snowshowingoffasmallerMicroLEDTV.UsingSamsung’sMicroLEDpanels,youcancreateavarietyofdisplaysizessupportingdifferentaspectratios,goingfromanultra-wide21:9screentoaperfectlysquare1:1displaywithoutlosingimagequality.125、Ifonelikesdoingthingsbyhimself,whichoftheitemssuitshimbest?A．Item1. B．Item2.C．Item3. D．Item4.1、Whichofthefollowingtechnologiesappearedforthefirsttimeintheshow?A．TheTVRUser’scontrollingtheTVbyGoogleAssistantB．Nvidia’slaptops’solvingtheproblemofpowerC．TheDreemband’sdetectyourheartrateD．Samsung’sMicroLEDtechnologymakinga146-inchTVpossible25．（10分）Statistically,airtravelisbyfarthesafestwaytotravelandyoucanmakeflyingevensafer,justbyfollowingthesesimplerules．Asyourchancesofbeinginvolvedinanairaccidentarepracticallynil（零）,manyoftheserulesconcernwhatyoushouldandshouldn’tdotomakeyourjourneysaferwhenyouareintheair.●Flyonnon-stoproutesMostaccidentsoccurduringthetakeoff,climb,descentandlandingperiodofaflight,soflyingnon-stopreducesyourexposuretothesecomplicatedprocedures.●ChooselargeraircraftAlthoughsmallaircraftshaveverygoodsafetyrecords,thosewithmorethan30passengerseatsaredesignedtocomply（遵守）withmuchstricterregulationsandaretestedmoreregularlytomakesuretheystillcomply.Also,intheunlikelyeventofaseriousaccident,largeraircraftsprovideabetteropportunityforpassengersurvival.●Payattentiontothepre-flightsafetybriefing（简报）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．anythingtheflightstafftellyoutodoB．generalsafetyadviceC．walkingaroundtheplaneD．pouringhotdrinks3、WhichofthefollowingisNOTtrue?A．largerplaneshavemoresafetychecksandaresaferinanaccident.B．Take-offsaresaferonnon-stopflightsthanlanding.C．Everyaircraftisdifferent,sothesafetyproceduresmaybedifferent.D．Seatbeltsshouldbeworntoprotectagainstsuddenchange.4、Thebesttitleshouldbe.A．ThesafestwaytotravelB．AirsafetytipsC．Non-stopRoutesD．Howtotakeaplane第三部分语言知识运用（共两节）第一节（每小题1.5分，满分30分）阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项．26．（30分）Anotherperson’senthusiasmwaswhatsetmemovingtowardthesuccessIhaveachieved.Thatpersonwasmystepmother.IwasnineyearsoldwhensheenteredourhomeinruralVirginia.Myfather1metoherwiththesewords:“Iwouldlikeyoutomeetthefellowwhois2forbeingtheworstboyinthiscountyandwillprobablystartthrowingrocksatyouno3thantomorrowmorning.”Mystepmotherwalkedovertome,4myheadslightlyupward,andlookedmerightintheeye.Thenshelookedatmyfatherandreplied,“Youare5.Thisisnottheworstboyatall,6thesmartestonewhohasn’tyetfoundanoutlet(释放的途径)forhisenthusiasm.”Thatstatementbegana(n)7betweenus.Noonehadevercalledmesmart,Myfamilyandneighborshadbuiltmeupinmy8asabadboy.Mystepmotherchangedallthat.Shechangedmanythings.She9myfathertogotoadentalschool,fromwhichhegraduatedwithhonors.Shemovedourfamilyintothecountyseat,wheremyfather’scareercouldbemore10andmybrotherandIcouldbebetter11.WhenIturnedfourteen,sheboughtmeasecondhand12andtoldmethatshebelievedthatIcouldbecomeawriter.Iknewherenthusiasm,I13it,andIsawhowithadalreadyimprovedourlives.Iacceptedher14andbegantowriteforlocalnewspapers.Iwasdoingthesamekindof15thatgreatdayIwenttointerviewAndrewCarnegieandreceivedthetaskwhichbecamemylife’sworklater.Iwasn’tthe16beneficiary(受益者).Myfatherbecamethe17manintown.Mybrotherandstepbrothersbecameaphysician,adentist,alawyer,andacollegepresident.Whatpower18has!Whenthatpowerisreleasedtosupportthecertaintyofone’spurposeandis19strengthenedbyfaith,itbecomesanirresistible（不可抗拒的）forcewhichpovertyandtemporarydefeatcannever20.Youcancommunicatethatpowertoanyonewhoneedsit.Thisisprobablythegreatestworkyoucandowithyourenthusiasm.1、A．rushedB．introducedC．carriedD．sent2、A．distinguishedB．favoredC．mistakenD．rewarded3、A．soonerB．earlierC．longerD．later4、A．draggedB．shookC．raisedD．bent5、A．perfectB．rightC．wrongD．impolite6、A．butB．soC．andD．or7、A．agreementB．friendshipC．gapD．relationship8、A．opinionB．imageC．expectationD．mind9、A．beggedB．persuadedC．orderedD．invited10、A．successfulB．meaningfulC．helpfulD．useful11、A．treatedB．entertainedC．educatedD．respected12、A．cameraB．radioC．bicycleD．typewriter13、A．consideredB．suspectedC．ignoredD．appreciated14、A．beliefB．requestC．criticismD．description15、A．teachingB．studyingC．writingD．reading16、A．nextB．sameC．onlyD．real17、A．cleverestB．strongestC．wealthiestD．healthiest18、A．enthusiasmB．sympathyC．fortuneD．confidence19、A．deliberatelyB．happilyC．traditionallyD．constantly20、A．matchB．winC．reachD．doubt第二节（每小题1.5分，满分15分）阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。27．（15分）InChina,thepandaisasymbolofpeace,harmonyandfriendship.Thatmakesittheperfetchoicetobeanewrepresentativetoexpandgreenenergyin1．country.Overthenextfiveyears,PandaGreenEnergy2．(set)up3．(vary)powerplantsacrossthecountry.Theseplantslooklikelovablecartoonpandasinshape.ThefirstpandaplantwasrecentlysetupinDatong,China,andlookslikeahappypandawitheyes4．lookindifferentdirections.Theblackpartsofthepanda5．(make)withmonocrystallinesiliconesolarcells(单晶体硅太阳能电池)withthegrayandwhitepartscomposed6．thinfilmsolarcells.Over25years,theplantswillbeabletooffer3.2billionkilowatthoursofgreenpower,reducingcarbonemissionsby2.74milliontons.“Bydesigningthesolarpowerstationintothepatternofapanda,weaimtostimulateteenagers’interestand7．(enthusiastic)forsolarenergyapplication,”ChinaMerchantsNewEnergyGroupCEO,AlanLi,saidatthe2016G20EnergyMinisterialMeeting.”8．(deal)withclimatechange,weshouldnotonlyappealtothegovernmentsand9．(company),butalsogetthenextgenerationinvolvedin,thus10．(make)jointeffortsforagreenfuture.第四部分写作（共两节）第一节短文改错（满分10分）28．（10分）假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。增加：在缺词处加一个漏字符号（^），并在其下面写出该加的词。删除：把多余的词用斜线（\）划掉。修改：在错的词下画一横线，并在该词下面写出修改后的词。注意：1、每处错误及其修改均仅限一词：2、只允许修改10处，多者（从第11处起）不计分。Atthebeginningoftheyear2018,mostpartofChina,includingKunmingandShaoguan,experiencetheheaviestsnowinwinter、Thisunexpectedheavysnowmadeusunpreparedandledmanyproblems、Thesnowblockedcitytrafficandcausedpowercuts,makevehiclesinstreetsrunslowlyandmanytrafficaccidentshappen、Besides,somehighwayswerebeenclosedandalotofflightswascanceledordelayed、Therefore,thissurprisingsnowalsobroughtmuchjoytopeople、Hewentouthappilyandtookagoodmanypicturesofthebeautifulmoments、Childrenwerethrowingsnowballsorsnowmenwereseeneverywhere、Iwillalwaysrememberthismagicallysnow、第二节书面表达（满分25分）29．（25分）假设你是李华。一年来，你爸爸给你报了很多学习辅导班（tutorialclass），对此你感到很反感。就此请用英语给你的美国网友Peter写封邮件，主要内容包括：1.简单介绍此事；2.你反感的理由；3.你内心的想法。注意：1.词数100左右；2.可以适当增加细节，以使行文连贯。3.开头和结尾已给出，不计入总词数。DearPeter,Howareyou?_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________I’mlookingforwardtoyourreply.Bestwishes!Yours,LiHua

参考答案第一部分（共20小题，每小题1.5分，满分30分）1、C2、C3、B4、C5、C6、D7、C8、D9、B10、A11、A12、C13、A14、D15、A16、A17、B18、C19、A20、B第二部分阅读理解（满分40分）阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。21、1、D2、A3、C4、B22、1、D2、A3、B23、1、C2、D3、B4、C24、125、D1、B25、Spaceiswhereourfutureis—tripstotheMoon,Marsandbeyond.Mostpeoplewouldthinkthatasidefromcomets(彗星)andstars,thereislittleelseoutthere.But,sinceourspacejourneystartedwehaveleftsomuchtrash（垃圾）therethatscientistsarenowconcernedthatifwedon'tcleanitup,wemayallbeinmortal（致命的）danger.Thefirstpieceofspacejunkwascreatedin1964,whentheAmericansatelliteVanguardIstoppedoperatingandlostitsconnectionwiththegroundcenter.However,sinceitkeptorbitingaroundtheEarthwithoutanyconsequences,scientistsbecameincreasinglycomfortableabandoning（抛弃）thingsthatnolongerservedanyusefulpurposeinspace.Itisestimated（估计）thattherearenowover500,000piecesofman-madetrashorbitingtheEarthatspeedsofupto17,500milesperhour.Thejunkvariesfromtinypiecesofpaintchippedoffrocketstocameras,hugefueltanks,andevenodditemslikethemillion-dollartoolkitthatastronautHeidemarieStefanyshynPiperlostduringaspacewalk.Themajorproblemwiththespacetrashisthatitmayhitworking