2025屆山東省平原縣第一中學英語高三上期末檢測試題含解析

2025屆山東省平原縣第一中學英語高三上期末檢測試題考生請注意：1．答題前請將考場、試室號、座位號、考生號、姓名寫在試卷密封線內(nèi)，不得在試卷上作任何標記。2．第一部分選擇題每小題選出答案后，需將答案寫在試卷指定的括號內(nèi)，第二部分非選擇題答案寫在試卷題目指定的位置上。3．考生必須保證答題卡的整潔。考試結(jié)束后，請將本試卷和答題卡一并交回。第一部分（共20小題，每小題1.5分，滿分30分）1．----Whichofthesedigitalcamerasdoyoulikebest?----______.Theyarebothexpensiveandoflittleuse.A．None B．Neither C．Nothing D．Noone2．You________havebookedtheticketsinadvance;therewereplentyleft.A．needn’t B．can’tC．shouldn’t D．mustn’t3．Inthestudents’eyes,MrsSmithisamothermorethanateacher.shetreatsthestudentsjustlikeherownchildren.A．AsaresultB．InotherwordsC．WhatismoreD．Firstofall4．Don'tyouthink_______ofgreatimportancethatweshouldkeepfitbytakingexerciseregularly?A．this B．that C．which D．it5．—HaveyouseenJiangWen’smovieLettheBulletsFlyrecently?—Yes.Iittwicelastweek,Athomeandinthetheatre.A．hadenjoyed B．enjoyed C．haveenjoyed D．wasenjoying6．________somepeoplecriticizegraffitiforbeinguglyanddestructive,thosegraffitiloversstillseeitasrealart.A．AsB．WhileC．OnceD．Until7．AChineseproverbhasitthatatowerisbuiltwhensoilonearth_________,andariverisformedwhenstreamscometogether.A．a(chǎn)ccumulates B．a(chǎn)ccelerates C．collapses D．loosens8．Thesediagramsareespeciallyhelpfulwhenwehaveaconcreteproblem______athand.A．besolvedB．tosolveC．solvedD．beingsolved9．Itwasn’tuntilthen_______theirmarriagewasbreakingupbecausetheyhadlittleincommon.A.didIrealize B.thatIrealizedC.hadIrealize D.whenIrealized10．Allthedishesinthismenu，_____otherwisestated，willservetwotothreepeople.A．a(chǎn)s B．if C．though D．unless11．Haveyoueverbeeninasituation______youknowtheotherpersonisrightyetyoucannotagreewithhim?A．where B．which C．that D．a(chǎn)s12．Theyovercamesomedifficultiesandcompletedtheworkaheadoftime,________wassomethingwehadnotexpected.A．that B．whichC．it D．what13．Meyerandhisteamwerethefirst______howthediseasespreadsfromanimalstohumans.A．showing B．show C．toshow D．shown14．TheJapanesepeoplekeepupcheerfulspirits________theworldthattheycangetoverthecrisiscausedbytheterribletsunami（海嘯）.A．beingconvinced B．convinced C．toconvince D．havingconvinced15．Sincemanyformerdrugabusershavepsychologicalproblems,theyoftenneedsupportgroups_________theycantalkabouttheirstrugglesandfindnewwaystomanageintheworld.A．which B．whatC．where D．when16．Thehealthofgardenplantsdependsonthesoil_____--theproperbalanceofmineralpieces,organicmatter,airandwater.A．constructionB．conservationC．corporationD．composition.17．Icouldnot________mytearswhenIsawthepictureofmyfatherworkingatthequakezone.A．bringInB．turnupC．takeoffD．holdback18．_____isoftenthecase,wehaveworkedouttheproductionplan.A．WhichB．WhenC．WhatD．As19．—DidLindaseethetrafficaccident?—No,nosooner________thanithappened.A．hadshegone B．shehadgoneC．hasshegone D．shehasgone20．Theaccidentwhichleft15peopleonboarddead________ifboththeangryfemalepassengerandthebusdriverhadkeptcalm.A．shouldhaveavoided B．shouldbeavoidedC．couldhaveavoided D．couldhavebeenavoided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四個選項中，選出最佳選項。21．（6分）MeetbigbrotherBlueandhissistersMeadowandLittleWillow,afamilyofthreeblindcatsthatjustgotadoptedbythefamilyCatherineMagno.TheirstorystartsjustbeforetheChristmasof2014whenthekittens（小貓）werefoundinanabandonedhouseinDubai.Bythentheyhadalreadylosttheirsightduetoacatfluthatwasleftuntreatedbytheirprevious（先前的）owner.Afterthattheycametoananimalhome.Atsomepoint,brotherBluealmostgotadoptedbythepreviousowner'sneighbor,butthepoorconfusedcatcouldn’tbearlivingwithouthissistersandcriedallnightwhilesearchingforthem.Soontheywereallunitedintheanimalhomeuntiltheimportantnightof19February2015,whenCatherinetookthemunderherwing."Ihadzeroexperiencehavingadoptedmyfirsteverrescuekittenjustacoupleofmonthsago,"Catherinesaid."ButtheirstorytouchedmyheartsomuchthatIcouldn'tbearthethoughtofthembeingputinacageforaverylongtimeorevenworse."Catherinewasworriedaboutthespecialneedsofhernewpetfriends:“Myworrywasthatit'sgoingtonotonlybechallengingbutalsorequirealotofadjustmentsonmypart,”butapparentlyitwasn'tthatmuchdifferent.“Theonlyadjustmentearlyonwaskeepingeverythingwhereitwasbuttheyaresoonadaptive（適應(yīng)的）.”Andasshewonderfullyputit:“Blindpetsseethroughtheirhearts."1、Whatcausedthethreecatstobeblindaccordingtothepassage?A．Becauseofacertainkindofdisease.B．Becauseofaseriouscaraccident.C．Becauseofsomebadpersonshurtingthem.D．Thepassagedidn'tmentionit.2、Whatdoestheunderlinedword"them"meaninParagraph2?A．Theownerandhisneighbor.B．MeadowandLittleWillow.C．CatherineMagnoandherfamily.D．Alltheotherblindpetsintheanimalhome.3、WhatkindofpersonisCatherine?A．Hard-working.B．Selfish.C．Kind.D．Rude.22．（8分）JoiningUsasaGamesVolunteer！Thesuccessofthe2020TokyoOlympicGamesdependsonyourcontribution！JoinusasaGamesVolunteer！GamesvolunteerswillbedirectlyinvolvedinassistingGamesoperationsbefore.duringandaftertheTokyo2020Games,Gamesvolunteerswillguideathletesaround,welcomeimportantpeopleandhelplostvisitorsNumberofVolunteeringDaysandDailyHours※TheTokyoOlympicGameswillbeheldfromFriday24JulytoSunday9August2020.Inprinciple,Gamesvolunteerswillberequiredtoworkforatleastafortnightbefore,duringandaftertheOlympicGames.※Gamesvolunteerswillworkapproximatelyeighthoursperdayincludingrestbreaks.Actualshiftlengthsdependoneventschedules,activities,activitysites,etc.AgeandResidentialRequirementsApplicantsmustfulfillthefollowingtworequirements:※BornonorbeforeApril1,2002※JapanesenationalorpersonwithvalidvisapermittingresidenceinJapanduringthevolunteerperiod(temporaryvisitorsincluded).NativespeakersofEnglishwillbepreferredNumberofGamesVolunteerOpportunities80,000MethodandApplicantCategories※Applicationswillbesubmittedonline※IndividualsonlyOffersandConfirmationThoseapplicantswhoattendthetrainingsessions(會議)andareassignedavolunteerrolewillbeofferedtobecomeaTokyo2020Gamesvolunteer.Pleasenotethattheaboveofferwillbecancelledintheeventofanyofthefollowing:※IfthevolunteerengagesinanyactivitythatdamagestheimageoftheTokyo2020Games※Ifthevolunteerengagesinanyactivitythatseverelydamagesteamwork※IfanyinformationcontainedintheoriginalapplicationformisclearlyfoundtobefalseItemsandWelfaresProvidedtoVolunteersVolunteerswillbeprovidedwithasetoffreeOlympicGamesvolunteeruniformsandmealsduringtheworkday1、AGamesvolunteerwillberequiredtoworkforatleast__________.A．oneweek B．twoweeks C．threeweeks D．fourweeks2、WhowillbemorelikelytobeacceptedasaGamesvolunteer?A．AChinese B．ARussian C．AnAustralian D．AGerman3、WhatwillGamesvolunteersbeprovidedwithforfree?A．Accommodation. B．Clothing. C．Transportation. D．Amusements.23．（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）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．Howtotakeaplane24．（8分）Whatmakesapersonagiverortaker?Theidea“givevs.take”takesshapeinallinteractions(互動)andrelationshipsofourlives.We’reeithergivingadvice,makingtimeforpeople,orwe’reonthereceivingend.Wekeepchangingbetweenthetwobasedondifferentsituationsonadailybasis,ifnotanhourlyone.AccordingtoAdamGrant,aprofessorattheUniversityofPennsylvania,mostpeoplearematchers.Theymakecarefulobservationsontakersandmakeitapointforthemtopaysomethingback.Theyhatetoseepeoplewhoactsogenerouslytowardsothersnotreceiveanyrewards.Actually,mostmatcherswilltryhardtopromoteandsupportgiverssothattheycangetthegoodtheydeserve.Isthereagenderfactor(性別因素)thatplaysapartinthis?AstudyledbyHannahRileyBowles,aprofessoratHarvardUniversity,focusedonthisquestion.Sheasked200seniormanagerstositdowninpairswhereonepersonwouldactasthebossandtheotherasanemployeetodiscusssalarypromotions.Male“employees”askedforanaveragesalaryof$146kwhilethefemalesaskedforonly$141k.Butwhydidtheynotbargainashardasthemen?Simplybecausetheyweremorelikelytobegivers.Asawoman,Idoenjoytheactofgivingupmytime,myknowledge,andmycareandmyattentiontoothers.Idon’texpectanythinginreturn,butIdotendtopullmyselfawaywhenIfeellikeI’mbeingtakenforgranted.IalsotendtogetupsetwhenIseealovedone’scontinuousactionsofkindnessgounnoticed.So,it’ssafetosayI’m50%giver,35%matcherand15%taker.Idoknowsomeone,however,whois99%giver.They’reconstantlydevotingtheirtime,sharingvaluableinsights(洞察力)andgoingoutoftheirwayforeveryonewhocrossestheirpath.Althoughthey’rechangedthelivesofmanypeople,theyrarelyseeanyofitreturned.Buttheuniverseisslowlyrepayingthem;they’renowextremelysuccessful,wellknownforwhattheydo.1、Wecanlearnfromthefirstparagraphthat________.A．mostpeoplethinktheyaregiversB．peoplearenotalwaysgiversortakersC．a(chǎn)nindividualisborntobeagiveroratakerD．fewdifferencesexistbetweengiversandtakers2、InAdamGrant’sopinion,mostpeople________.A．hatetakers B．prefergivingtotakingC．enjoyrelyingonthemselves D．balancegivingandtaking3、Hannah’sstudyfocusedon________.A．theroleofgivingandtakinginjobsB．thegenderdifferenceingivingandtakingC．theroleofmenandwomeninsocietyD．thesalarydifferencebetweenwomenandmen4、Theauthortendsto________.A．thinkactsofkindnessshouldbevaluedB．expectsomethinginreturnforgivingmostofthetimeC．takegivingforgrantedD．beacompletematcher5、Whatcanbeinferredfromthelastparagraph?A．Givingistheshortestpathtosuccess.B．Sharingisthegreatesthumanquality.C．Nogooddeedgoesundone.D．Giversareworthrespecting.25．（10分）DuringWorldWarItheRedCrosssetupaprogramforpeopletosendletterstosoldiersinEuropesotheywouldneverbelonely.Duringthecourseofthisprogramasoldierreceivedaletterfromawomanhedidn’tknowandhadnevermet.Sheaskedhimthetypicalthingsandhewroteareturnletterwiththetypicalanswers.Astheirlettersbecamemorefrequenttheyrealizedthattheyhadmuchincommonandafriendshipwasformed.Thoughtheever0increasingletterstheycametoknoweachothermoreandbelookedforwardtothemashemovedeverforwardintocombatanddanger.Overtimetheirfriendshipbegantoblossomintolove,buttheyneverexchangedphotos.Eventuallythewarended.HetoldherhewascominghomeandtheymadeaplantomeetatGrandCentralStation.Hewouldlooklikecountlessothersoldierssohetoldherhewouldholdabouquetofcarnations（康乃馨）andshesaidshewouldbecarryingaparticularbook.Iftheirlovewasrealtheycouldmeet.Atthestationhewaseagerlysearchingforthebookinthehandsofeverywomanhemet.Shortlyafter,ashort,plainandoverweightwomanappearedcarryingabook.Heknewitwasher.Hisexcitementformeetingtheloveofhislifedashedaway.Butheputabigsmileonhisfaceandcalledhername.Shesmiledandcameovertohim.Hebenttokisshercheek,butshepushedhimoff.Insteadshehandedhimthebookandwalkedoff.Confused,hesuddenlyturnedaroundandabeautifulwomanwasstandingandsmilingbeforehim.“Ihadtobesure,“shesaidtohim,“ifyouwerethemanofpersonalityIdreamedabout.Andyouare.”AndshecameintohisarmsandtheykissedforthefirsttimeunderthebigclockinthecenterofGrandCentralStation.1、Whatdoestheunderlinedword“them”inParagraph2referto?A．SoldiersB．LettersC．ThetypicalanswersD．Thetypicalthings2、Whydidthesoldierdecidetofoldabouquetofcarnations?A．TocheckiftheirlovewastrueB．TofulfillthepromisehemadeyearsagoC．Todistinguishhimselffromothersoldiers.D．Topresentawelcomegifttothewoman.3、Howdidthemanfeelatthefirstsightofthewomanwithabook?A．EagerB．CautionsC．EmbarrassedD．Disappointed4、What’sthekeytopicofthepassage?A．WarandpeaceB．Dreamandreality.C．CheatandtrustD．Friendshipandlove第三部分語言知識運用（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四個選項中，選出可以填入空白處的最佳選項．26．（30分）BeforeIcametocollege,IwassureIknewallaboutit,sinceIhadmetsomecollegestudentsandhadseenmorethanmyshareofold“college”movieswherethe1belongedto“playboys”andtheheroinestosophisticates(圓滑世故的人）.But,now,afteronesemesterasacollegestudent,manyofmyoldideashave2completely.Iusedtoimaginebossyupper-classmen,forexample.Ithoughttheywouldbeknow-it-allrulersofthecampuswho3freshmenforfun.Ipicturedbeing4tothewrongclassrooms,beingignored.But,infact,theupper-classmenturnedouttobequite5.Theyofferedtohelpmeandinspiredmeto6mytoughcourses.Theupper-classmenweren’ttheonlyonesIworriedabout.Iwasalso7abouttheotherfreshmen.IwasafraidtheymightthinkIwastoofat,tooshy,too8,oreventoodumbtobotherwith.9,Iwaswrong.WhenIfinallygottocollege,IdiscoveredthatmoststudentsfeltexactlyasIdid.TheywereasuneasywithmeasIwaswiththem,andaswestartedtoopenup,webeganto10oneanother.Webegantobecomecuriousabouteachother’sbackgroundsandinterests;thedifferencesamongusactuallybecame11.Ichangedmymindaboutotherthingstoo.Ihad12homeworktobeabook-fillednightmare,whichwouldkeepmefrommeeting13dates.Ididhavesome14tests;Ididbreakoutinaclammysweat,and15astomachupsetandagiganticheadache,butcontrarytoexpectations,Ipassedallofmyexamswithgoodgrades.I’vealwaysbeen16.Theniftheworsthappens,I’mjustreadyforit.Ihaveplannedtolive17thisprinciplebefore.Butafterthis,Iknownotallschoolswouldbethesame.Thisone18tobemuchbetterthanIthoughtitwouldbe—agood19innotjumpingtoconclusions.Nodoubtmy20towardcollegewillshiftstillmoreasIgoon,butIknowI’llneverbeasnegativeasIwasbeforeIgottocollege.1、A．directorsB．heroesC．starsD．a(chǎn)ctors2、A．changedB．a(chǎn)dvancedC．developedD．occurred3、A．a(chǎn)ttackedB．challengedC．trickedD．reminded4、A．a(chǎn)ttractedB．persuadedC．followedD．directed5、A．considerateB．unusualC．strangeD．honest6、A．stickwithB．competewithC．comparewithD．meetwith7、A．crazyB．concernedC．guiltyD．serious8、A．nervousB．embarrassedC．uglyD．a(chǎn)nxious9、A．MeanwhileB．BesidesC．ThereforeD．Again10、A．a(chǎn)ssistB．trustC．considerD．praise11、A．worriesB．problemsC．a(chǎn)ttractionsD．a(chǎn)dvantages12、A．imaginedB．intendedC．hopedD．expected13、A．rightB．dueC．wrongD．proper14、A．a(chǎn)wfulB．guiltyC．unforgettableD．successful15、A．senseB．cureC．sufferD．find16、A．foolishB．negativeC．positiveD．confident17、A．onB．forC．inD．by18、A．turnedoverB．turnedupC．turnedoutD．turneddown19、A．lessonB．theoryC．memoryD．knowledge20、A．conceptB．dreamC．methodD．a(chǎn)ttitude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個適當?shù)膯卧~或括號內(nèi)單詞的正確形式。27．（15分）UNChineseLanguageDay1．(celebrate)yearlyonApril20.Thisyear,DoreenHyndwasamongthoseinvitees,whoareeitherexpertsontheChineseculture2．haveaspecialskillrelatedtoit.HyndastonishedallthosepresentwhileperformingTaiChi,3．Chinesemartial(武術(shù)的)artform,ataneventheldbytheUNTaiChiClub.Theaudiencecouldhardlybelieveshewasa93-year-oldgrandma.Itwasdefinitelyamazingthatshecouldbendherbodyandraiseherlegso4．(easy)andkeepherselfstillstandingononeleg.Hyndowes(歸功于)allthistohercontinuouspracticeofTaiChi.BorninAustraliain1925,HyndbeganTaiChitraininginher50sandthenmovedtotheUS,5．shelaterbecameaninstructorherself.When6．(ask)aboutthegreatestbenefitshegainedfromTaiChi,Hyndsaid,“balance.”Hyndhasbeenteachingpeopleofallagesanddifferent7．(culture)backgroundshowtopracticeTaiChi.TheyhavebenefitedgreatlyfromtheirassociationwiththeChineseculture.They’vedevelopedabalancedstateofmindandimprovedtheirhealthafter8．(month)ofpractice.TaiChiallowsthesepeople9．(understand)that,fromtheperspective（視角）ofyinandyang,allthingsarecloselyconnectedwitheachother.ThismightbewheretheattractionofTaiChi10．(lie).HyndenjoyssharingthisgreatgiftfromChinawithherstudents.第四部分寫作（共兩節(jié)）第一節(jié)短文改錯（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，下文就是你同桌的一篇作文。文中共有10處語言錯誤，每句最多有兩處。每處錯誤僅涉及一個單詞的增加、刪除或修改。增加：在缺詞處加一個漏字符號（∧），并在其下面寫出該加的詞。刪除：把多余的詞用斜線（＼）劃掉。修改：在錯的詞下劃一橫線，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）不計分。NowI’dliketosharewithyouastrangeexperienceIhadamonthbefore、Itmaysoundfunny,andit’strue、Afteraday’shardworkIwenttobedearlythanusual、Itwasabouttwoo’clockinthemorning,andsuddenlyIwokeup、Iheardanoise、Igotoutofbedandwentslowdownstairs、Ilistenedcarefully、Icouldheardtwomenspeakingquietly、IbelievedtwothieveshadbrokenintomyhouseandIwasreallyfrightened,soIwentbacktoupstairs,andimmediatelyphonethepolicefrommybedroom、Thepolicearrivedquickly、Theyopenedfrontdoorwithaspecialkeyandwentintothelivingroom、YoucanimaginewhatembarrassedIwaswhentheycameupstairsandtoldmewehadturnedthetelevisionoffformeandeverythingwasallright、第二節(jié)書面表達（滿分25分）29．（25分）假定你是李華，下周瑞典某中學師生團將訪問你校。請你給你將接待的瑞典學生Peterson寫封電子郵件，內(nèi)容包括:1.表示熱烈歡迎:2.告知活動安排:3.詢問有何要求。注意:1.詞數(shù)80左右:2.可以適當增加細節(jié)，以使行文連貫。____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

參考答案第一部分（共20小題，每小題1.5分，滿分30分）1、A2、A3、B4、D5、B6、B7、A8、B9、Ｂ10、D11、A12、B13、C14、C15、C16、D17、D18、D19、A20、D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四個選項中，選出最佳選項。21、1、A2、B3、C22、1、B2、C3、B23、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）thattherearenowover500,000piecesofman-madetrashorbitingtheEarthatspeedsofupto17,500milesperhour.Thejunkvariesfromtinypiecesofpaintchippedoffrocketstocameras,hugefueltanks,andevenodditemslikethemillion-dollartoolkitthatastronautHeidemarieStefanyshynPiperlostduringaspacewalk.Themajorproblemwiththespacetrashist