2023-2024学年河北省邢台市重点中学高三第六次模拟考试英语试卷含解析

2023-2024学年河北省邢台市重点中学高三第六次模拟考试英语试卷注意事项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．Don’ttospring-cleanthewholehousejustbecausemymotheriscoming—there’snoneedtodothat.A．undertake B．attemptC．bother D．hesitate2．_____workingability，youarenoworsethantheothers，itisjustyouwhodon’tputyourheartinyourwork．A．Infavorof B．Inhonorof C．Intermsof D．Incaseof3．—Juliasaidshesentyouabirthdaycardyesterday.Haveyougotit?—Oh,really!Ihaven’t________mymailboxyet.A．examined B．reviewed.C．tested D．checked4．Butforthemetalcagetopulltheminerstosafety,theminersinChile____inlessthantwenty-fourhours.A．wouldnotberescued B．wouldnothavebeenrescuedC．wouldberescued D．wouldhavebeenrescued5．—Ihavebeenconsideringcancellingtheprojectbecauseitseemshardtogofarther.—Butit'stooearlyto________now.There'sstillmuchhope.A．pickupthepieces B．throwinthetowelC．gothroughyourpaces D．jumpdownyourthroat6．Sopopular_____inhisadoptedhometownthathehasbeennamedhonorarycitizenofBeijing.A．StephonMarburyisB．StephonMarburywillbeC．isStephonMarburyD．willStephonMarburybe7．DoyouknowwhatTomdoesallday?IknowhespendsatleastasmuchtimewatchingTVashe____________hislessons.A．isdoing B．does C．spendstodo D．doesdoing8．Wearelivinginanage________QRcodes(二维码)arebecomingmoreandmorepopularinourdailylife.A．why B．thatC．whose D．when9．Justasthefamousman_____it,“Anythingonemancanimagine,othermencanmake____real.”A．says,it B．put,/ C．says,/ D．put,them10．Intheforest,soundisthebestmeansofcommunicationoverdistance________incomparisonwithlight,itwon'tbeblockedbytreeswhentravelling.A．whileB．becauseC．whenD．though11．－Doyoureallymeanitwhenyousayhewillagoodpresident?A．judge B．duit C．turn D．Serve12．—Ilikeyournewshoes!—Thanks.Ihadtotryonalmostadozenpairs_________Idecidedtogetthem.A．as B．whenC．after D．before13．WolfWarrior2,which________the“AwardforBestVisualEffects”attheBeijingFilmFestival,indicatesChina'sfilmindustryhascomeofage.A．winsB．wonC．haswonD．hadwon14．Agoodsuitcaseisessentialforsomeonewhois

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asmuchasJackieis.A．ontheriseB．onthelineC．onthespotD．ontherun15．Perhapsyou________stopplayingcomputergamesnow.Yourbossmaybeturningupintheofficeatanymoment.A．will B．must C．should D．can16．Theywenttothestreetto________tothewholecitytohelpthepoorboy.A．apply B．appealC．add D．reply17．ProfessorLi________forhisinformativelecture,waswarmlyreceivedbythestudents.A．knownB．knowingC．havingknownD．tobeknown18．_____everyyear,manypeopledonotholdahighopinionoftheCCTVSpringFestivalGala,ithasbecomeasomewhatnecessarypartofthefestival.A．AsB．ThereforeC．While D．Since19．Manyyoungpeoplejustcan’tlivewithouttheInternet,theydependonforwhateverinformationtheyneed.A．which B．when C．where D．what20．I_________tohelpyoutodohomeworkbutIcouldn'tspareanytime.I________acompositionlastnightandI'llfinishittomorrow.A．wanted；wrote B．hadwanted；waswritingC．hadwanted；wrote D．wanted；havebeenwriting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）You’resoyoungrightnow,butIhopethisletterwillbehelpfultoyouonedaywhenyou’reolder.Ifeelitismyresponsibility,asamotheroftwolittlegirls,toleadyoudownapaththatisrelativelyhealthywhenitcomestobeautyandself-image.Inalotofwomen’seyes,I’veprobablyalreadyfailedinthisaspectduetoalotofpinkBarbiedollsinVera’sroomrightnow.ButIwillsaythisaboutBarbiedolls:IplayedwithBarbiedollsformanyyearswhenIwasgrowingupandhereIhaveahealthybodyandapositiveimage.Ihaveamaster’sdegree,asuccessfulcareerandapublishedbook.IfBarbiedollswerereallysodamagingtomyfemininity(女人气质)andself-image,IhighlydoubtwhetherIcouldlistalloftheseachievements.It’shardforwomennottoworryaboutourweightortowishwecouldaffordmorestylishclothes.It’shardnottowantsomeoneelse’shairoreyelashes.Wewomengoroundandroundincircles,holdinghandsandtryingtobeoneanothersometimes.ThethingI’lltellyouisthis:noteventheprettiestofusfeelsettled.Thegirlyouthinklooksthemostperfectinalltheworldisprobablythegirlwhowantstochangeherselfmorethananyoneelse.Don’tletthatmessagecarryanyweightwithinyourselves.Youarenotworthless.Youaresofullofloveandlightandyoushouldletitshinethroughyoureverysecond.Ifsomeonepushesyoudownforstandingtallthenjustpushyourselfbackupandstandeventaller,andknowthatthereasonwhytheypushedyoudowninthefirstplaceisjustthatthey’rescared.IwanttotellyouthatIhaveneverinmylifefeltmorebeautifulthanwhenIhavestoodmytallest.1、WhatdoestheauthorthinkaboutBarbiedolls?A．Theydidnoharmtoherimage. B．Theyenablehertoachievealot.C．Theypreventedherdevelopment. D．Theycontributedtoherpromotion.2、Whatcanwelearnfromthethirdparagraph?A．It’swomen’snaturetobeenvious. B．It’seasytoreadwomen’sthoughts.C．Womenliketobeclosetoeachother. D．Womentendtopursueaperfectappearance.3、Whatdoestheauthorsuggestherdaughtersdo?A．Trytobethemostbeautiful. B．Standtallwithloveandtoughness.C．Comparethemselveswithotherstoimprove. D．Pushothersdownonthewaytobethetallest.4、What’stheauthor’spurposeinwritingtheletter?A．Totellherdaughterswhatrealbeautyis. B．Towarnherdaughtersofthetroubleinlife.C．Tosharewithherdaughtersallherexperience. D．Topersuadeherdaughterstofollowherexample.22．（8分）Whydoyougotothelibrary?Forbooks,yes—butyoulikebooksbecausetheytellstories.Youhopetogetlostinastoryorbetransportedintosomeoneelse’slife.Atonetypeoflibraryyoucandojustthat—eventhoughthere’snotasinglebook.AtaHumanLibrary,insteadofbooks.youcan“borrow”people.Peoplewithuniquelifestoriesvolunteertobethe“books.”Foracertainamountoftime,youcanaskthemquestionsandlistentotheirstories,whichareasfascinatingasanyyoucanfindinabook.(Ifyouattend,makesuretoreviewthehabitsthatmakeyouagoodlistener.)Manyofthestorieshavetodowithsomekindofdepressingtopic.Youcanspeakwitharefugee,asoldiersufferingfromPISD(创伤后遗症),ahomelesspersonandawomanlivingwithHIV.TheHumanLibraryencouragespeopletotaketimetotrulygettoknowandlearnfromsomeonetheymightotherwisemakeasnapjudgementabout.Accordingtoitswebsite,theHumanLibraryis“aplacewheredifficultquestionsareexpected,appreciatedandanswered.”TheHumanLibraryOrganizationcametobeinCopenhagen,Denmarkin2000.RomniAbergelandhiscolleagueshostedafour-dayeventduringamajorNorthernEuropeanfestival.Afterthesuccessofthisevent,AbergelfoundedtheHumanLibraryOrganization,hopingtoraiseawarenessamongyouthaboutdepression,whichhasbeengrowingeversince.Thoughthereareafewpermanenthumanlibraries,mostaren’tplacesatall,butevents.Thoughmanydotakeplaceatphysicallibraries,youdon’tneedalibrarycard—anyonecancomeandbepartoftheexperience.Therehavebeenhumanlibraryeventsallovertheglobe,inuniversitiesandinpubs,fromChicagotoTunistoEdinburghtoSanAntonio.Checkouttheorganization’sFacebookpagetoseewhentheHumanLibrarymightbearrivingnearyou.1、WhatshallwedobeforegoingtotheHumanLibrary?A．Bringabook.B．Getalibrarycard.C．Gooversomelisteninghabits.D．Makeanappointment.2、Whatdoestheunderlinedword“snap”inparagraph2mean?A．True.B．Obvious.C．WrongD．Quick.3、WhydidRormiAbergelfoundtheHumanLibraryOrganization?A．Heexpectedtoanswerdifferentquestion.B．Hewantedyoungpeopletopayattentiontodepression.C．HesuccessfullyheldaneventinNorthernEurope.D．HehadsetuptheHumanLibrariesallovertheworld.4、Whatisthebesttitleofthetext?A．ALibraryinDenmarkB．HumanLibraryOrganizationC．HumanLibraryIsNearYouD．“Borrow”PeopleInsteadofBooks23．（8分）Let'sGoFlyaKite...—atPiedmontMiddleSchool'scelebrationofkites!Comeandlearnhowtobuildallsortsofkites,fromthesimplestdiamond-shapedkitestothemostcomplexboxkites.Stayaslongasyoulikeandbuildasmanykitesasyouwant.Onceyouhavefinishedakite,getadviceonflyingtechniquesfromkiteexpertLorenaHallsberg.ThecelebrationwillbeatPiedmontMiddleSchool,151PiedmontSchoolDrive.ThePiedmontMiddleSchoolParentTeacherOrganization(PTO)hasorganizedarefreshment(茶点)tent.AllprofitswillbenefitfuturePTOactivities.Takeabreakfromkiteflyinganddrinksomelemonade!Whileyouaredoingso,whynotjointhePTO?Membershipisfree;youjustdonateyourtime.ShowyoursupportforPiedmontMiddleSchoolbyjoiningthePTOthisSaturday!When:Saturday,April11,from9:00amto5:00pmWhere:PiedmontMiddleSchoolWhy:Forfun!Cost:Free,thankstoagenerousgiftfromBizarcoKiteCompany!Schedule9:00am:Kite-buildingboothsopen.Allmaterialsaresuppliedforkites.10:00am:Kite-buildingshowsbyLorenaHallsberginthecourtyard.Comebyandlearnhowtobuildboxkitesandkitesthatlookandflylikebutterflies.11:00am:Kite-flyingshowsontheschooltrack.Learnallthemostimportantskills.12:00pm:Kite-flyingcompetitionsontheschooltrack.1:00pm:PresentationbyDr.BrianLehrmanintheshowtent:"TheHistoryofKites".2:00pm:BestKitecompetitionsandjudgingintheshowtent.Comeseethemostartistickitesandthemostinterestingthemekites.3:00pm:PresentationbyDr.Lehrmanintheshowtent:"KitesandScience".3:30pm:AwardsceremonyconductedbyHeadmasterSewardonthefootballfield.Theresultsoftheday'sjudgingwillbeannounced,withawardssuchasBestofShow,MostArtistic,HighestFlyer,andothers.WinnerswillreceivegiftsfromtheBizarcoKiteCompany!4:00-5:00pm:Let'sallgoflyakite!Everyoneflieskitesatthesametime,creatingawonderfulsightforalltoenjoy.Cometothekitecelebration,enjoyyourselfandlearnmore.1、ThemainpurposeofParagraph2istoaskpeopleto____.A．buildakite B．supportthePTOC．takeabreak D．jointhefun2、Whichtimesaremostimportantforpeoplewhowanttojoininkitecompetitions?A．10:00amand11:00am. B．12:00pmand2:00pm.C．1:00pmand3:00pm. D．2:00pmand4:00pm.3、Fromthepassage,weknowthatthekitecelebration___.A．isenjoyableandeducationalB．isstrictabouttheshapesofkitesC．getsmoneyfromPTOofPiedmontMiddleSchoolD．givespeopleachancetoseekitesfromaroundtheworld4、Thepassageisintendedfor____.A．schoolstaff B．kiteexpertsC．studentsandparents D．kitecompanies24．（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（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．Howtotakeaplane25．（10分）LocatedinTimesSquareandtheBroadwaytheatredistrict,thishoteloffersfreecoffee,teaandhotchocolate.Continentalbreakfastisprovided.Aflat—screensatelliteTVwithHBOisincludedineveryroomatEconoLodgeTimesSquare.Asafetydepositboxandadeskareprovided,andfreelocalandlongdistancecallstotheUSandCanadaareoffered.The50thStreetundergroundstationis3blocksfromtheEconoLodgeTimesSquare.RockefellerCenterandtheMuseumofModernArtarea5-minutewalkfromthehotel.Hell’sKitchenisagreatchoicefortravellersinterestedinsightseeing,shoppingandtheatre.ThisisourguestsfavouritepartofNewYork,accordingtoindependentreviews.ThispropertyisalsoratedforthebestvalueinNewYork!Guestsaregettingmorefortheirmoneywhencomparedtootherpropertiesinthiscity.Wespeakyourlanguage!Mostpopularfacilities:FreeWiFi,Parking,Non-smokingrooms,Facilitiesfordisabledguests,Dailymaidservice.GoodtoknowCheck-in15:00-00:00hoursCheck-outUntil12:00hoursCancellation/prepaymentCancellationandprepaymentpoliciesvaryaccordingtoroomtype.PleaseenterthedatesofyourstayandchecktheconditionsofyourrequiredroomChildrenandextrabedsAllchildrenarewelcome.Free!Uptothreechildrenunder5yearsstayfreeofchargewhenusingexistingbeds.Thereisnocapacityforextrabedsintheroom.Travellingwithpets?Petsarenotallowed.GroupWhenbookingmorethan4rooms,differentpoliciesandadditionalsupplementsmayapply.Address:302West47thStreet,Hell’sKitchen,NewYork,NY10036,USAreservations@econolodgetimessquaremTel:(212)2461991WelcometothebrandnewEconoLodge

®TimesSquare1、WhatisthebestchoiceifyougotoRockefellerCenterfromthehotel?A．Onfoot.B．Bysubway.C．Bytaxi.D．Bytrain.2、Whichofthefollowingisn’tfreeinEconoLodgeTimesSquare?A．WiFi.B．Parking.C．Alllongdistancecalls.D．Coffee,teaandhotchocolate.3、Whatcanbelearntfromthepassage?A．Thebesttimetoliveinthehotelis3:00am.B．Allchildrenunder5yearsstayfreeofcharge.C．Thecancellationpoliciesofeachroominthehotelarethesame.D．Customersfromallovertheworldhavenodifficultycommunicatingwiththehotel.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）AsIwalkedthroughaparkinglotonacoldnight,Isawahomelessman.Hewassettlinginto1againstthewallsurroundingatrashbin.ThoughIknewasawoman,itwas2formetoaskgstrangemanifheneeded3,Iturnedandwalkedback.“Sir,”Ibegan,“Iliveoverthere.”Ipointedtomycomplexand4thatthepoliceofficerinthecommunitysaidtheywouldtrytohelpthehomelessfind5ifwecalled.Iaskedifitwasokayto6thepolice,andhesaidthatitwas.7Idonotcarryacellphone,I8acallatanearbybusiness.Iwasafraidthepolicewouldpassbyandnotseehim.Ididnotwanthimtobe9.WhenIreturned,Iaskedifitwasokayformeto10withhim.Again,hecalmly11.Hethenasked,“Doyouthinkthey’llfindmeanapartment?”“Idobelieveso”ismy12tohim.Ididnothaveanymoneyorfoodwithme—13.twowaterbottles.Ismiled,pulledoutoneofthewaterbottlesand14ittohim.Hetookthebottleandthensatup,asifhewantedtorespectthe15Imade.Hethoughtforamomentandthenbegandrinkingsmallsipsofthewater.Whentheofficersarrived,they16methathewouldhavehousingandeventhankedme.Tomy17,Iwasunwillingtoleavetheman.Irealizedanunexpected18wasborn.ItwasthecalmmanwhosenameIneverknewthat19methatthoughtherewillalwaysbepeoplewhoarebetterabletodo20,sometimesyoumuststopbecauseyouaretheonewhoisthere.1、A．eatB．learnC．sleepD．lean2、A．strangeB．unwiseC．necessaryD．vital3、A．helpB．guideC．donationD．sponsor4、A．excusedB．inquiredC．expressedD．explained5、A．shelterB．moneyC．foodD．drink6、A．begB．questionC．contactD．touch7、A．WhileB．SinceC．WhenD．If8、A．receivedB．confirmedC．returnedD．made9、A．invisibleB．impoliteC．ignorantD．annoyed10、A．playB．chatC．liveD．wait11、A．forgotB．agreedC．refusedD．doubted12、A．ideaB．reasonC．causeD．response13、A．yetB．evenC．justD．still14、A．offeredB．lentC．sentD．owed15、A．decisionB．effortC．promiseD．difference16、A．requiredB．warnedC．assuredD．informed17、A．surpriseB．joyC．regretD．pride18、A．businessB．actionC．organizationD．connection19、A．advisedB．calledC．remindedD．allowed20、A．everythingB．somethingC．nothingD．anything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）FelicityMiller,a32-year-oldBritishwoman,1．hasaChinesehusband,stillremembersthe2．(excite)whenshefirstlearnedtousethe“redpacket”functiononWeChatin2015.ShesentandgrabbedsomeredpacketsinherChinesefamily’sgroup.Theruleinherfamilywasthatthepersonwhograbbedthe3．(high)amountsentthenext.Attractedbytheuniquewayofcommunicating,manyforeigners4．(join)insendingandgrabbingredpacketssofar.Usually,themoneyineachpacketisrandom.Thustheamountofmoneyonecangrab5．(large)dependsonhisorherluck,from0.01yuantolessthan200yuan.Manyforeignersgetmorefamiliar6．Chineseculturethrough“redpackets”.Twoyearsago,whenFelicityMillerwassent5.20or8.88yuanredpackets,shehadnoclueaboutthe7．(hide)meanings.Now,shehasknownaboutthem.However,thepopularityofvirtualredpacketsdoesn’tstoppeoplesendingpaperredpackets8．(contain)realcashduringtheSpringFestival.It9．(call)luckymoney.InChinesetradition,peopletakeluckymoneyforchildrenas10．blessing.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。Iwillshareoneexperiencewithyou、WiththeCollegeEntranceExaminationdrawnear,Iamfilledwithgreatanxiety、Therefore,Icouldn’tbeabsorbedinstudies,resultingfrommyfailingintheexamination、Igotextremediscouraged、Justthen,myteacher,MissZhang,approachedmeandsaid,“Itisnaturalthatinlifeweallhavemomentwhenwecan’tachievewhatwewantit、Don’tallowthemtoweakenyou,andturnthemintomotivationtoinspireyou、”Herwordswerereminderwhichprovidedmyselfwithconstantencouragementtosmileatlife、Consequently,IgainedwhatIdeserved、Soitisanoptimisticattitudewhichmattersmostofall、Itgivesyoutheconfidencetodealwithdifficultiesandtoachievewhatyouwantinyourlife、第二节书面表达（满分25分）29．（25分）假设你是李明，请你写一封信给校长，包括以下内容:1.目前学校体育设施(sportsfacilities)状况的不足；2.体育设施对学生的重要性；3.提出建议。注意:1.字数100左右；2.可适当增加细节，以使行文连贯。3.开头已给出，不计入总词数。DearMr.President,Iamwritingthislettertoyoutoexpressmyconcernaboutthesportsfacilitiesinourschool.________________________________________________________________________________________________________________________________

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、D4、B5、B6、C7、D8、D9、B10、B11、C12、D13、B14、D15、C16、B17、A18、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、A2、D3、B4、A22、1、C2、D3、B4、D23、1、B2、B3、A4、C24、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.Themajorproblemwiththespacetras