吉林省通榆县第一中2025届高三第二次联考英语试卷含解析

吉林省通榆县第一中2025届高三第二次联考英语试卷注意事项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．Asteachersweshouldn’taccepttheargumentgivenbysomepeople_______standardizedtestsrestricteducatorstoomuchandtakethejoyoutofteaching.A．where B．whatC．how D．that2．—It’stoocomplex,Ithink．—________.Sowe’dbettermakeiteasierforstudentstogetinvolved．A．That’sridiculous B．That’sthepointC．That’ssettled D．That’sallright3．Theproblem_______hewillhavehiscollegeeducationathomeorabroadremainsuntouched.A．howB．whetherC．thatD．when4．Itisclearlystatedthattheseregulations______everyoneinthecommunity,withoutexception.A．appealto B．adapttoC．applyto D．attachto5．Ifyousleeplessthansevenhours,youarethreetimesmoretocatchacold．A．possible B．certainly C．probable D．likely6．Hewrotealetter________heexplainedwhathadhappenedintheaccident.A．that B．whichC．where D．what7．Youcanaskanyoneforhelp.________hereiswillingtolendyouahand.A．Everyone B．NooneC．One D．Someone8．—I’dratherhavesomewine,ifyoudon’tmind.—______.Don’tforgetthatyou’lldrive.A．Byallmeans B．AnythingbutthatC．Takeiteasy D．Iwouldn’tsaynotothis9．Theyoungman,________inheavytrafficontheway,gothomeanhourlaterthanusual.A．catching B．caught.C．havingcaught D．tobecaught10．Thenewsupermarketannouncedthatthefirsttopurchasegoodsontheopeningday______________getabigprize.A．must B．willC．shall D．need11．Thegovernmentisto_____thetechnologiestothefullinthestructuraltransformationoftheeconomy.A．adaptB．exposeC．exploitD．attach12．—Theterribleaccidentisunderinvestigation.—Actually,quickeraction_________thoseworkerstrappedinthemine.A．mighthavesaved B．musthavesaved C．shouldhavesaved D．couldhavesaved13．Shemusthaverankedherbirthdaypresentsinorderof_becausethetoponeisherfavorite．A．value B．time C．interest D．preference14．Alongwiththeemailwasmybrother’spromise______Icamefirstinthecompetition,hewouldbuymeanMP4.A．what B．that C．thatif D．whether15．Idon’tthinkRosemarywillbeupsetaboutit,butI’llgotoseeherincaseshe_______.A．is B．willbe C．does D．need16．Cambridgegaveapositiveanswerinquiriesonwhetheritrecognizesgaokaoscores.A．infavorof B．inresponsetoC．insaluteto D．inconsequenceof17．Ourteacherenteredtheclassroom,__________.A．abookinhand B．bookinhandC．bookinhishandD．abookinhands18．________andopentovariousinterpretations,thetermsofthenewproposalneedimprovingbasedontheinterestsofbothsides.A．AccessibleB．ApparentC．AmbiguousD．Aggressive19．Ithinkyou’vegottothepointachangeisneeded,otherwiseyou’llfail.A．when B．which C．where D．there20．TwoprofessorsatHarvardUniversitypublishedastudyof3,300newgraduates,lookingat________theirnameshadanybearingontheiracademicperformance.A．that B．how C．why D．whether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）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．Howtotakeaplane22．（8分）InmostpartsofBritain,theblackcatisasymbolofgoodluckandowningablackcatmaybringgoodlucktothefamily.Butrecently,blackcatscannolongerenjoysomuchfavor.TheRoyalSocietyforthePreventionofCrueltytoAnimals（英国防止虐待动物协会）announcedariseinthenumberofblackcatsbeingabandonedbytheirowners,duetonotlookinggoodinselfies（自拍）.AccordingtotheRSPCA,morethan70percentofthecatsinitscareareblack.Thebiggestreasonforthatisblackcatstendnottophotographastheirlighterandbrighter-coloredfellowswithmoreobviousmarkings.AnRSPCAspokesmansaid,“Thishasbecomeanationalproblem.Andweareurgingpeopletoneverjudgeacatbyitscolorbutlookatitspersonalityinstead.”TheMillwoodCatRescueCentrehastakeninniceblackcatsinthepasttwoweeks.Thefounderoftherescuecentresaid,“Wehavehadalotofblackcatsbecausepeopledon’tlikeblackatthemoment.Otherlookattheblackcatsandthenjustsay

‘Oh,haveyougotanythingelse?’”AnimalloverGabriellaFletcherownsa16-year-oldblackcat,Susie.Sheregularlytakesselfieswithherpet.Shesaid,“Itishardtogetagoodpictureasyoucan’treallyseehowbeautifulSusieis.Sheisjustasspecialasanyothercat.”1、（小题1）Whyareblackcatslessfavoredbypeople?A．Theyarerisinginnumber.B．Theydon’tbringgoodluckanymoreC．TheyarebannedbyRSPCA．D．Theydon’tlookgoodinphotos.2、（小题2）WhatdoestheunderlinedsentenceinParagraph3imply?A．Peoplewantmoreblackcats.B．Peoplewanttohavesomethingtoeat.C．Peoplewantmorepetanimals.D．Peopleareunwillingtoseesomanyblackcats.3、（小题3）InGabriellaFletcher’seyes,blackcatsare_______.A．disgustingB．unluckyC．ordinaryD．attractive4、（小题4）Whichofthefollowingcanbethebesttitleofthistext?A．Blackcatsoutin“selfies”.B．BlackcatsabandonedintheUK.C．Blackcatsinneedofcaring.D．Blackcatsfavoredagain.23．（8分）Children’sActivities(6—13years)—Summer2017Thereisnochanceofchildrengettingboredintheholidayswiththeseaction-packedweeksoffunandgames.Daysbeginwithteambuildingactivitiestohelp“breaktheice”andgetthechildreninthemood.ThewonderfullysafeandsecureenvironmentofPortRegisenablesthechildrentoexplorethewoodsandenjoytheirowncreativeplay.WEEK1:FestivalofSport(Monday12ndJulytoFriday26thJuly)Thesummeractivitieskick-offwithawonderfulweekofsportingfunincludingcricket,athleticsothergreatteamgames.Swimsinthepoolandgamesinthegym.WEEK1:Let’sGoWild(Monday29thJulytoFriday2ndAugust)AWholeweekinthegreatoutdoorswithtreasurehunts,campbedandcavebuildingalongwithamazingteamgamesinwoods.Thisweekguaranteestobelikenoother.Navigateyourselfthroughthehugespiders'webandguideballsthroughthehugeballmaze…thisisagreatweekformakingnewfriends.WEEK3:SportingMadness(Monday5thAugusttoFriday9thAugust)Awildandstrangeweekoftournamentsandtwin(bothtraiditionalandafewofthehomemadevariety)games,butbewarned,youmightgetwet!Artsandcrafts,funinthegymandswimsinthepoolmakethisahardweek.Besidesexhaustionyou'dbetterlearntogetusedtochallengesandacceptanyresult.Activitieswillbedependentontheweather.WEEK3:MakeaRacquet(球拍)（Monday12thAugusttoFriday16thAugust）Whataracquetthisweekbringswithallthebat,racquetandclubsportyoucouldwishfor…crazygolf,tennis,hadmintion,cricketandtabletennistonamebutafoeforthechildrentoenjoy.WEEK5:HavingaBull(Monday19thAugusttoFriday23rdAugust)Quizzjes,artsandcrafts,funinthegymandswimsinthepoolarenottobewitninthisweekofFun.WEEK6:MgdalMedley(混战）(Tuesday27thAugusttoFridy30thAugust)Thisweekre-runsthebestbitsofthelastfiveweekswithgreatteamgamesandtournaments,action-packedballsports,floatyfuninthepoolandadventuresinthewoods.Childrenwillneedtobring:Swimmingkit,plentytodrinkandbreaksnacks.Dependantontheweather,childrenwillneedeithersunscreenandsunhatsorwetweathergear.1、Whatcanwelearnfromthefirstparagraph?A．Childrenwillgraduallyadapttothecoldweakerintheactivities.B．ChildrenwillformagoodmoodnaturallyinPortRegisSchool.C．ChildrenwillexplorenaturetotallyontheirowninthesecureenvironmentofPortRegis.D．Childrenwillbecomecomfortablewitheachotherthroughteambuildingactivities.2、WhichactivityMillbeunique?A．MakeaRacquet.B．Let’sgowild.C．Festivalofsport.D．Sportingmadness.3、Accordingtothepassage,WEEK3willbeaweekwhen________.A．childrenmayexperiencethefeelingoffailureB．thegamesmaybeplayedindoorsC．childrenmaygetwarnedforfailingingamesD．childrenmayswimintheriverinthewild4、Whencanchildrenreviewtheactivitiestheyhadbefore?A．29thJulyto2ndAugust.B．Thursday27thJulytoFriday30thAngust.C．Tuesday27thAugusttoFriday30thAugust.D．Monday19thAugusttoFriday23rdAugust.5、Whatinformationcanwelearnfromthepassage?A．Childrenwillbeprovictedwithsnackstoeat.B．Childrenmustwearsunscreenorsunhats.C．Childrenreedtoprepareforrainyday.D．Childrenhavetodrinkalotforswimming.24．（8分）It’snoteasyfeelinglikeyou’realwaysunderthespotlightbeingjudgedforeachlittlemistakeyoumake.Yourmindisinanendlesscircleplayingwhatyousaidanddidoverandoveragain.Youwishyouhadatimecapsuletogobackandmakethingsfightifyoufindmistakes.Youfearwhatotherswillthinkaboutyouandthattheywillrejectanddislikeyou.Youseektobesociallyperfect.Academically，youworklongendlesshoursjusttomakethoseexcellentmarks.Althoughmostwouldsay“it'sgoodtohavehighstandards，”theyhavenoideaabouttheinternalhellyouputyourselfthroughtoachieveperfection.Ifyoucomeuplessthanyourdesiredgoalyoufeelasthoughyouhavefailed，butyou’refarfromfailing，youjustdon’tseeitthatway.Soinsteadyouaretellingyourselfthatyou’restupid，andnotsmart.Thepressureyouplaceonyourselfweighsyoudownandyouwearthe“notgoodenough”labeleachandeveryday.Younotonlyhavehighstandardsforyourselfbutyoualsohavethemforothers.Ifpeopledon’tperformuptoyourexpectations，thenyouthinkthemincompetent.Thiscausesalotoffrustrationbecauseyoucan’ttrustanyonetogetthingsright.Soinsteadofbeingateamplayeryouflysolo(单飞)andtrytodotwoorthreejobsatonce.Yourunrealisticexpectationscauseyoutocriticizeandjudgeothersandthatleadstoproblemsinotherareasofyourlife.Theattempttobeperfectiscalledperfectionismandit'stheunachievableAmericandreamthat’sdamagingouremotionalandmentalhealth.Westriveforperfectionwithourbody，inourperformance，andinourrelationships.Inasocietythatoverstatesmistakes，isitanywonderthatsomanyyoungpeopleattempttheimpossibletaskofbeingperfect?Weallhaveflaws，fears，andmakemistakes，andthat’sperfectlyOK.It’sourimperfectionsthatmakelifeinterestingandtheyhelpusgrowintoastrongermoreadaptableperson.Wedon’thavetostrivetoachievetheimpossible.Wearedesignedtobeperfectlyimperfect.1、Whatmightbethemostsuitabletitleofthetext?A．FarfromfailingB．PerfectlyImperfectC．PerfectionismPhenomenonD．UnachievableAmericanDream2、Whichofthefollowingisaperfectionistmostlikelytoagree?A．Nobodyisperfect.B．Begenerouswithpraise.C．Thereisnobest，onlybetter.D．Acontentedmindisaneverlastingfeast.3、Whatcanweinferfromtheunderlinedsentenceinparagraph4?A．Moreandmorepeoplearetoleratingmistakes.B．Thesocietyispartlytoblameforperfectionism.C．Manyyoungpeoplefinditimpossibletobeperfect.D．It’sunusualforasocietytoseekperfectionismnowadays.4、Whatdoestheauthorthinkofimperfection?A．It’spartofourlife.B．It’sunbearable.C．Itdeservestobeovercome.D．Itdoesharmtoourmentalhealth.25．（10分）MirroringChina’sPast:EmperorsandTheirBronzesChinesebronzes(青铜)ofthesecondandfirstmillenniaBCaresomeofthemostdistinctiveachievementsinthehistoryofart.Thesevessels(容器)weremadetocarrysacrificialofferings,touseinburialortohonornoblefamiliesinpublicceremonies.Whentheywerefoundbyemperorscenturieslater,thesespirituallysignificantobjectswereseenassignsofheavenlymessagesaboutaruleroradynastyandbecameprizeditemsinroyalcollections.Thisexhibition—thefirsttoexploretheseancientobjectsthroughoutChinesehistory—presentsarareopportunitytoexperiencealargenumberoftheseworkstogetherintheUnitedStates.UnlikeGreekandRomanbronzesculpturesofhumanandanimalforms,mostobjectsfromBronzeAgeChina(about2000-221BC)werevesselsforceremonialuse.BeginningwiththeSongdynasty(960-1279),emperorsunearthedthesesymbolicworksandbegancollectingthem,consideringthemtobeevidenceoftheirownauthorityasrulers.Inadditiontoimpressivecollections,theroyalfascinationwithbronzesledtothecreationofnumerousreproductionsandthecomprehensivecataloguingofpalaceholdings.Thesecataloguesareworksofartthemselves,featuringbeautifuldrawingsanddetaileddescriptionsofeachobject.Fromthe12thcenturyonward,scholarsandartistsalsoengagedincollectingandunderstandingancientbronzes.Unlikeemperors,scholarsregardedbronzesasmaterialevidenceoftheireffortstorecoverandreconstructthepast,andtheyoccasionallyexchangedthemastokens(象征)offriendship.TodayancientbronzesstilloccupyaprimarypositioninChineseculture—ashistoricalobjectsandassignifiersofanimportantculturalheritagethatinspiresnewgenerations,asseenintheworksofcontemporaryartistsonviewinthispresentation.MirroringChina’sPastbringstogetherapproximately180worksfromtheAnInstituteofChicago’sstrongholdingsandfromthePalaceMuseuminBeijing,theShanghaiMuseum,andimportantmuseumsandprivatecollectionsintheUnitedStates.Byprovidingviewerswithanewunderstandingofancientbronzesandtheirsignificancethroughtime,theexhibitiondemonstratesChina’sfascinatinghistoryanditsdevelopingpresent.1、InwhatwayareChinesebronzesdifferentfromGreekandRomanones?A．Theyfascinatedtheroyalfamily.B．Theytookanimalorhumanforms.C．Theyservedceremonialpurposes.D．Theywereimportantculturalheritage.2、Whatdoestheauthorthinkofcataloguesofbronzes?A．Unreal.B．Creative.C．Artistic.D．Necessary.3、Whatcanweinferabouttheexhibitionaccordingtothetext?A．ItisheldinChina.B．Itisarrangedbytime.C．Itisorganizedbyscholars.D．Itincludesmodernartworks.4、Whatdoestheunderlinedword“holdings”inthelastparagraphreferto?A．Viewers.B．Collections.C．Museums.D．Artdealers.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）Lifeiscolorful.Sometimesit’sjustlikepotatosalad;whenit’sshared,itbecameapicnic.Withthreeyoungchildrentobringup,myhusbandJohnandIwerevery1."Canwegoonapicnic,Mom?"mysix-year-olddaughter,Becky2."Please."Ihadsaidnosomanytimesin3months,andIdecidedtheusualSaturdaymorningchorescould4.Toher5,Iagreed.Ipreparedafewsandwichesand6acoolerwithiceanddrinksandcalledJohn7.Myeleven-year-oldtwinsonsloadedthecoolerandthepicnicbasketinthetrunkandoffwewenttospendsome8timetogetherasafamily.AboutthetimeIgotthelunch9outonthetable,Johnarrivedonthe10.Thatwasoneofthehappiestmealsweeversharedtogether.Themealwasfullof11.Wefeltaclosenessthathadbeenhiddenbyworkandschoolresponsibilitiesforsomanymonths.Johnandtheboys12rocksintothelake,BeckyfedtheducksandIsatquietlyatthepicnictable,13Godforblessingmewithsuchawonderfulfamily.Thatnightasourchildrenwenttobed,Ikissedtheircheeks.It14mewhatawonderfullifeIhad.AsIwalkedoutoftheroomitdawnedonmethateventhebusiest15couldbecomeapicnicwhenit’ssharedwiththeonesyou16.Eventhoughkidshavenowgrownupand17fromhome,IcanstillrememberhowIfeltthatdaywhilesittingatthepicnictable.Maybetodaywouldbeagoodtimeto18potatosalad,callallofmy19kids,feedsomehungryducksandskippedafewrocksintothelake.Sincelifeislikepotatosalad,let’smakeita20.1、A．patient B．old C．occupied D．poor2、A．begged B．doubted C．asked D．wondered3、A．coming B．recent C．following D．late4、A．last B．approach C．relax D．wait5、A．disappointment B．sadness C．surprise D．embarrassment6、A．supplied B．filled C．provide D．compared7、A．atwork B．offwork C．onbusiness D．athome8、A．unhappy B．quantity C．quality D．unfortunate9、A．cooked B．spread C．taken D．made10、A．scene B．sight C．view D．scenery11、A．communication B．expectation C．hope D．laughter12、A．missed B．took C．skipped D．left13、A．trusting B．thanking C．praising D．praying14、A．refreshed B．questioned C．beat D．hit15、A．lifestyle B．time C．world D．occupation16、A．love B．enjoy C．own D．have17、A．leftalone B．leftbehind C．movedaway D．ranaway18、A．watch B．appreciate C．plant D．cook19、A．handsome B．young C．mature D．grown20、A．picnic B．salad C．life D．purpose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）NowadaysChineseareusingthesolarcalendar.Butatthesametime,Chinesearealsousingtheirownlunarcalendar.Eachlunaryear1．(give)thenameofoneoftheseanimals:therat,theox,thetiger,thehare,thedragon,thesnake,thehorse,thesheep,themonkey,thecock,thedogandthepig.Thislistrepeats2．(it)everytwelveyears,3．isamainfeatureoftheChineselunarcalendar.EachChinesemonthstartsonthedayofthenewmoon,andthefullmoonalwayscomesonthe4．(fifteen)dayofthemonth.TheNewYear,5．(actual)wellknownastheSpringFestival,alwaysfalls6．January21standFebruary20th.Onthelastdayofeachlunaryear,theChinesewillhold7．bigfamilyreuniondinner.Allthemembersofafamily,withthe8．(except)ofmarrieddaughters,willtrytobepresentonthisfestivaloccasion,eveniftheyhavetotravelmanymiles9．(return)tothehomeoftheirparents.Afterthedinner,evenchildrenwillstay10．(wake)untilthemidnighttowelcomethenewyear.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短文。短文中共有10处错误，每句中最多有两处。错误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（∧），并在此符号下面写出该加的词。删除：把多余的词用斜线（＼）划掉。修改：在错的词下划一横线，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。I'llneverforgetthenightwhenourcarbrokendown.Wewereheadinghomeafterawonderfullyeveningwithourfriends.Itwaswellaftermidnightbutwewerestillmilesawayfromhome.Therewasnotrafficsontheroad,sowehadtowalktohome.Worsestill,itstartedtorain,butbythetimewegothome,wewerewetthrough.Anditwasthenwhatwediscoveredthatwehadleftourfrontdoorkeyinthecar.Wehavenochoicebutbreakawindowandclimbin.Thenanpolicemancameandwehadtoexplainthesituationforhim.Wewenttobedat3am.第二节书面表达（满分25分）29．（25分）假设你是中国某高中学生李华。请给你的朋友Mark介绍一个中国节日，包含以下内容：1.节日名字，时间；2.节日的习俗；3.节日的意义。___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

参考答案第一部分（共20小题，每小题1.5分，满分30分）1、D2、B3、B4、C5、D6、C7、A8、B9、B10、C11、C12、D13、D14、C15、A16、B17、B18、C19、C20、D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、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.Themajorproblemwiththespacetrashisthatitmayhitworkingsatellitesanddamagetravelingspacecraft(飞船).Moreover,piecesofjunkmaycollide（碰撞）witheachotherand