安徽滁州市定远县西片三校2024届高三一诊考试英语试卷含解析

安徽滁州市定远县西片三校2024届高三一诊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．IntheUS,therearecurrentlyover5,000communityschools_____,inadditiontoservingaseducationalinstitutions,functionascommunitycentersforthesurroundingneighborhood.A．which B．whereC．whose D．as2．—Haveyoufoundthenewflatadvertisedinthenewspaper?—Yes.Butthecommunity____verylargeandInearlygotlostjustnow.A．hadbeen B．was C．willbe D．is3．Theboystoodhisheaddown,listeningtohismotherscoldinghimforbreakingthewindows.A．for B．of C．with D．around4．Greatpity!Hisillnessis________thetreatmentavailablesofar.A．within B．above C．about D．beyond5．Youlookbeautifulinthisdressandthereisonlyoneofthiskindlefthere.Iwonderifyouwouldbuy________.A．it B．oneC．some D．any6．Therehasbeenpositivereactiontotheproposaltohelpthedisabled,theimpactwillbelastingespeciallyforyoungerones.A．onwhich B．onwhomC．ofwhich D．ofwhom7．Humansspendalotoftimeandmoneyontheirpetsandthepetsgivealltheyhave_____forthat.A．inreturnB．infactC．inshortD．inall8．Aproposalwasputforwardatthemeeting__________thenewcementplantshouldn’tbebuiltneartheschool.A．whenB．whereC．thatD．which9．—DidLindaseethetrafficaccident?—No,nosooner________thanithappened.A．hadshegone B．shehadgoneC．hasshegone D．shehasgone10．---I’lltaketheblueone.Thisistwentydollars.---Here’sthechange..A．Bestwishes B．MypleasureC．Haveaniceday D．Let’scallitaday11．That’swhyIhelpbrightenpeople’sdays.Ifyou________,who’stosaythatanotherpersonwill?A．didn’t B．don’tC．weren’t D．haven’t12．Theguidanceteacherwastheiradviser,offeringthemsuggestionsandsolutionswhenthey______difficulties.A．aroseB．encounteredC．emergedD．evaluated13．______muchpressuretheU.S.governmentputontheChinesegovernment,Chinawouldsticktoitsownpolicyofexchangerate.A．However B．Wherever C．Whatever D．Whoever14．—Don’tmakeaspecialjourneytopickupthelaundryforme.—It’sOK.I________totheshopanyway.A．wasgoingB．willhavegoneC．havegoneD．willbegoing15．Inspiteof_________hasbeensaid,quitealotofpeoplearestilluncertainaboutthestateofthecountry’seconomy.A．what B．whichC．that D．as16．Youcanonlybesureof_____youhaveatpresent;youcannotbesureofsomething_____youmightgetinthefuture.A．that;what B．what;/ C．which;that D．/;that17．Tomisproudand________,neveradmittingheiswrongandalwayslookingforsomeoneelsetoblame.A．strict B．stubbornC．sympathetic D．sensitive18．—Nancy,whatclassesareyoutakingthisterm?—_____IwanttotaketwoEnglishcourses,ormaybeSpanish.A．What’sup?B．It’snoneofyourbusiness.C．I’venoidea. D．I’mnotsureyet.19．Iamsurethatthegirlyouaregoingtomeetismorebeautiful_______thaninherpictures.A．innature B．inmovement C．intheflesh D．inthemood20．—Areweabouttohavingdinner?—Yes,it________inthediningroom.A．serveB．isservingC．isbeingservedD．hasbeenserving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）Thelightfromthecampfirebrightenedthedarkness,butitcouldnotpreventthedampcoldofDennis’sSwamp(沼泽地)creepingintotheirbones.Itwasastrangeplace.MartinandTomwishedthattheyhadnotacceptedJack’sdare.Theylikedcamping,butnotnearthisswamp.“So,”Martinaskedastheysatwatchingthehotcoals.“Howdidthisplacegetitsname?”“Areyousureyouwanttohearit?It’sascarystory,”warnedJack.“Ofcourse!”criedoutTom.“Iftherewereanythingtobescaredof,youwouldn’thavechosenthisplace!”“Ok,butdon’tsayIdidn’twarnyou,”saidJack,andhebeganthistale.“Waybackintime,amancalledDennistriedtostartafarmhere.Hebuiltthatcottageovertheretolivein.Inthosedays,thearealookedquitedifferent—itwascoveredwithtalltreesandtheswampwasacrystal-clearriver.Afterthreehardyears,Dennishadclearedseveralfieldsandplantedcrops.Hewassoproudofhissuccessthatherefusedtolistentoadvice.“‘Youareclearingtoomuchland,’warnedoneoldman.‘Thelandisalivingthing.Itwillhitbackatyouifyouabuseit.’”“‘Sillyfool,’saidDennistohimself.‘IfIclearmoreland,Icangrowmorecrops.I’llbecomewealthier.He’sjustjealous!’”“Denniscontinuedtochopdowntrees.Smallanimalsthatreliedonthemforfoodandshelterweredestroyed.Hewassoeagertoexpandhisfarmthathedidnotnoticetheriverflowingslowlytowardshisdoor.Hedidnotnoticesaltseepingtothesurfaceoftheland.Hedidnotnoticeswampplantschokingallthenativeplants.”“Whathappened?”Martinasked.Itwasgrowingcolder.Hetrembled,twistinghisbodyclosertothefire.“Thelandhitback—justastheoldmanwarned,”Jackshrugged.“Dennisdisappeared.Oldfolksaroundherebelievethatswampplantsmovedupfromtheriveranddraggedhimunderwater.Hisbodywasneverfound.”“Whatastupidstory,”laughedTom.“Plantscan’t…”Beforehehadfinishedspeaking,hescreamedandfainted(晕倒).Theothertwoboysjumpedupwithfright,staringatTom.Suddenly,theyburstoutlaughing.Somegreenswampivy(常春藤)hadcoveredTom’sface.ItwasawhilebeforeTomcouldappreciatethejoke.1、Theunderlinedword“dare”inParagraph1isclosedinmeaningto________.A．courage B．assistance C．instruction D．challenge2、WhydidJacktellTomandMartinthestory?A．Tofrightenthem.B．Tosatisfytheircuriosity.C．Towarnthemofthedangeroftheplace.D．Topersuadethemtocampintheswamp.3、WhydidDennisignorethewarningoftheoldman?A．Theoldmanenviedhim.B．TheoldmanwasfoolishC．Hewastoobusytolistentoothers.D．Hewasgreedyformorecrops.4、WhydidTomscreamandfaint?A．HesawDennis’sshadow.B．Hewasscaredbyaplant.C．Hisfriendsplayedajokeonhim.D．Theweatherbecameextremelycold.5、WhatlessoncanwelearnfromthestoryofDennis?A．Graspall,loseall.B．Nosweat,nosweet.C．Itisnousecryingoverspiltmilk.D．Hewhomakesnomistakesmakesnothing.22．（8分）WHO’SWHOINTHEZOO?IsitamazingthattheWHO’SWHOINTHEZOOmakesitfunforyoungchildrentosave?WiththehelpofStandardBank’sKidzAPPandtheBigFiveanimalfriends,teachingyourchildrenaboutmanagingtheircashhasneverbeenmorefun.LettheWHO’SWHOINTHEZOOshowyourlittleoneswhatitmeanstoearnandsavemoneyaswellasshareintheenjoymentofspendingtheirwell－earnedcash.ElephantAsyourchildrenusethemobileapptocompletevariousactions—achievingsavingsgoals,completingmissionsandachievingwishes—herevariousmedalswillberewarded.Earnedmedalsaredisplayedintheelephanthabitataswellaslockedmedalsstilltobeachieved.LeopardRewardyourkidswithpocketmoneyforcompleting‘missions’:householdchores,achievements,etc.Youcancreateamissionforyourchild,oryourchildcanrequestanewmission.Oncecreated,itmustbeaccepted.Themissionneedstobecompletedbyyourchildandapprovedbyyoubeforeyoucanpayhimorher.LionHelpyourchildrencreateandfulfilwishes.Wishcardsandtheirsavingsprogresscanbetrackedfromyourbankingapp.Oncetheirsavingsgoalisreached,lionwillinformyouoftheirachievement.BuffaloKidzcanrequesttowithdrawcashorpurchaseairtimeanddatausingtheirsavings.RhinoRhinoshowsyourchild’slatestaccountbalanceandtransactions.DownloadtheStandardBank’sKidzAPPfromAppleAppStoreonthephone.UsethecommentsectiontointeractwithotherStandardBankcustomersandbankconsultants.1、WhatistheWHO’SWHOINTHEZOOdesignedfor?A．Playersofboardgames. B．Kidsforself－servicebanking.C．Parentsforonlinebanking. D．Travelersinthezoo.2、Rewardswillbepaidif________.A．thekidsfulfilyourcreatedmissionsB．yourkidsgetenoughlockedmedalsC．youkeeptheaccountbalancedD．youapprovetherequestviaKidzAPP3、Whichofthefollowinganimalsisrelatedtospending?A．Rhino. B．Leopard. C．Lion. D．Buffalo.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（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．Howtotakeaplane24．（8分）LondonHeathrowAirportLondonHeathrowAirportisamajorinternationalairportinwestLondon,England,UnitedKingdom.HeathrowisthebusiestairportintheUnitedKingdomandthebusiestairportinEuropebypassengertraffic.Heathrowisalsothethirdbusiestairportintheworldbytotalpassengertraffic.In2016,ithandledarecord75.7millionpassengers,a1.0percentincreasefrom2015.LocationHeathrowis14mileswestofcentralLondon.Theairportissurroundedbythebuilt-upareasofHarlington.Harmondsworth,LongfordandCranfordtothenorthandbyHounslowandHattontotheeast.TothesouthlieBedfontandStanwellwhiletothewestHeathrowisseparatedfromColnbrookinBerkshirebytheM25motorway.HistoryHeathrowAirportstartedin1929asasmallairfieldonlandsouth-eastofthehamletofHeathrowfromwhichtheairporttakesitsname.Atthattimetherewerefarmsandmarketgardensandorchardsthere.DevelopmentofthewholeHeathrowareaasaverybigairfieldstartedin1944:itwasstatedtobeforlong-distancemilitaryaircraftboundfortheFarEast.Butbythetimetheairfieldwasnearingcompletion,WorldWarⅡhadended.Thegovernmentcontinuedtodeveloptheairfieldasacivilairport;openedasLondonAirportin1946andrenamedHeathrowAirportin1966.FacilitiesHeathrowAirportisusedbyover90airlinesflyingto170destinationsworldwide.TheairportistheprimaryhubofBritishAirways,andisabaseforVirginAtlantic.OfHeathrow's75.7millionpassengersin2016,93%wereinternationaltravellers;theremaining70%wereboundforUKdestinations.ThebusiestsingledestinationinpassengernumbersisNewYork,withover3millionpassengersflyingbetweenHeathrowandJFKAirportin2016.1、WecanknowfromthetextthatHeathrowAirportisnamedaftera(n)____.A．personB．animalC．placeD．plant2、WhatcanwelearnaboutLondonHeathrowAirportfromthetext?A．Ithasahistoryorover90years.B．Ithandledfewerthan70millionpassengersin2016.C．MostofitspassengersareboundforUKdestinations.D．Ithasthethirdlargestnumberofpassengersintheworld.3、Whatisthepurposeofthetext?A．TointroducebasicinformationaboutHeathrowAirport.B．ToattractmoretravelerstoHeathrowAirport.C．ToindicatethehistoryofHeathrowAirport.D．ToshowtheconvenienceofHeathrowAirport.25．（10分）JohnBlanchardwasstudyingthecrowdmakingtheirwaythroughthestation.Hewaslookingforthegirlwhoseheartheknew,butwhosefacehedidn't,thegirlwiththerose.WhenreadingabookinaFloridalibraryayearbefore,Johnbecameinterestednotinthecontentsofthebook,butinthenotespenciledinthemargin.Thehandwritingreflectedathoughtfulsoulandbeautifulmind.Hediscoveredtheformerowner'snameinthefrontofthebook:MissHollisMaynell.Helocatedheraddressandwrotealetterintroducinghimself.Thenextdayhewasshippedoverseastoserveinthearmy.Duringthenextyear,theygrewtoknoweachotherthroughthemailandtheirfriendshipdeveloped.Johnrequestedaphotograph,butsherefused,sayingifhereallycared,itwouldn'tmatterwhatshelookedlike.Whenthedayfinallycameforhimtoreturnhome,theirfirstmeetingwassuggested—7:00p.m.attheGrandCentralStationinNewYork.Shewrote,“You’llrecognizemebytheredroseIwearonmycoat.”SonowJohnwasinthestationtomeetthegirlwitharose.Asaprettyandslimgirlingreencameover,Johnnoticedherblueeyeslikeflowersinspring.Hewalkeddirectlytowardsher,entirelyforgettingshewasnotwearingarose.AsJohncameclosertoher,hesawanotherwomanwitharedrosestoodnearby.Wellpast40,thiswomanhadgrayinghairdoneunderawornhat.Seeingthegirlingreenwalkquicklyaway,Johnfeltasifheweresplitintwo.Hedesiredtofollowthatgirl,butlongedforthewomanwhosespirithadtrulycompanionedandsupportedhim.Thewomanlookedgentleandsensible.Johnwenttoher,saying,“I’mCaptainJohnBlanchard.YoumustbeMissMaynell.Iamgladtomeetyouhere.MayItakeyoutodinner?”Sherepliedwithasmile,“Idon’tknowwhatthisisabout.Buttheladyingreenwhojustwentby,beggedmetowearthisroseonmycoat.Shesaidifyouaskedmeouttodinner,I’dtellyousheiswaitingforyouinthebigrestaurantacrossthestreet.Shesaiditwassomekindoftest!”1、Johnwaseagertoknowtheformerownerofthebookbecausehe______.A．wasveryinterestedinthecontentsofthebookB．wasimpressedbythenoteswrittenbyitsownerC．wantedtoimprovehishandwritingD．wantedtodiscussthebookwithher2、WhathappenedtoJohnaftergettingintouchwithMissHollisMaynell?A．Heservedinthearmyabroad.B．Hewentoverseasforvacation.C．HewentonabusinesstripinNewYork.D．HevisitedMissMaynell.3、Whatdoweknowaboutthewomanwitharose?A．ShewasMissMaynell’sclosefriend.B．Shewasawaitressinthebigrestaurant.C．Shewasprobablyapasserby.D．ShewaspaidtomeetJohnattheStation.4、Whichwouldbethebesttitleofthetext?A．AnInterestingBook B．AWomanWithaRoseC．ABraveSoldier D．ALoveTest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）Todaythereismoretoreadthaneverbefore.Thewebsitestrytheirbestto1witheachotherbyofferingreadingupdates.Thesocialnewssitesarealwaysfilledwiththe2newsandstoriesonecanreadeverywhereonline.3,thereisnolastingvalueamidthewholecompetition.Asfarastheirvalueis4,Iassumeitmakesnomuch5whetheryoufindonetoreador6it.Ifyouaresomeonewhotendsto7meaninginlife,Iamsureyou’vefeltthiswayaswell.Wheneverthishappens,Ichoosetoturnbacktothe8,theoldenduringmeaningfulbooksthathave9thetestoftime.Mostpeoplebelieve,withourmodern10wehaveinventednewlife.Butthisisnotthe11.Whentheythinktheyareleadingalifecompletely12whattheirancestorshaddecadesago,theyare13stillsurroundedbyminordetailsandtheirliferemains14.Everythinghasitsparticularplace.Oldbooksteachyouhowtoliveandwhatit15tobehuman,withmoralstandards.Thisis16theystillplayanimportantpartinourlife.I’mgladthatIamnot17inthisopinion.Manypeopleagreethatthewisdomofthegreatesthumanminds18throughcenturiesisthemostvaluable19ofmankind.Tomakeclassicbooks20toyoungsters,schoolsshouldmakeitpossiblefortheirstudentstofindthebooksrecommendedbytheirteachersonthebook-shelvesinthelibrary.1、A．struggleB．communicateC．cooperateD．compete2、A．temporaryB．finalC．latestD．present3、A．HoweverB．ThereforeC．InsteadD．Besides4、A．regardedB．suggestedC．consideredD．concerned5、A．differenceB．senseC．commentD．progress6、A．preventB．loseC．missD．avoid7、A．giveupB．searchforC．setasideD．jokeabout8、A．articlesB．fictionsC．expertsD．classics9、A．madeB．stoodC．createdD．experimented10、A．serviceB．editionC．technologyD．construction11、A．caseB．baseC．lifeD．matter12、A．equaltoB．consistentwithC．differentfromD．similarto13、A．probablyB．actuallyC．usuallyD．potentially14、A．unchangedB．stableC．safeD．peaceful15、A．showsB．provesC．offersD．means16、A．whetherB．whyC．whenD．where17、A．aloneB．lonelyC．discouragedD．optimistic18、A．givenupB．carriedawayC．passeddownD．broughtup19、A．revolutionB．performancesC．processD．possessions20、A．attractiveB．accessibleC．suitableD．beneficial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）Didyouknowthatwhatyouthinkyoulikeanddon’tlikeisoftentheresultoffalsebeliefs?Ashumans,wetendtobe1．(easy)influencedwhenitcomestolikingordislikingsomething,andwe’rehappytohaveourexistingbeliefsconfirmed.Butoncethesebeliefsbecamefixed,weoftenloseourabilitytobe2．(object)andwedon’tliketohaveourideaschallenged.Generallyspeaking,humanbeingsarenotgoodattakinga3．(balance)viewofthings.Forinstance,weunconsciouslystarttolistenforandselectinformationthat4．(match)ourbeliefsandturnablindeyetoinformationthatdoesn’t,5．(reject)itoutofhand.Wedon’talwaysliketoacceptnewinformationthatdoesn’tmatchupwithwhatwealreadybelieve.Asaresult,weoftendon’tevenconsiderthereasonsbehind6．opposingpointofview.Instead,welookforevidencethatconfirms7．wehadalreadythought,andwhichconformstoourownpointofview.We’remorelikely8．(give)meaningtoinformationthatmatchesthebeliefswealreadyhave.Inotherwords,wearebiased(偏见)towardscertaininformation.9．cancomeasashockwheninformationwe10．(trust)isactuallyexposedtobeuntrue.第四部分写作（共两节）第一节短文改错（满分10分）28．（10分）短文改错只允许修改5处，多者(从第6处起)不计分。Hello,boysandgirls!Today,Iamgoingtotalkaboutwhatyoushoulddowhenafirealarmgooff、Ifyouhearthealarm,standinlineatthedoorandwaityourteachertoleadyououtside、Stayclosetoyourteacherandclassmates、Don’tpanicorgetoutofline,andtrytoremainquietandcalmly、Soonthefirefighterswillcomeandputoutthefire、Ifit’safalsealarmandthereisnofire,yourteacherwillleadusbacktotheclassroom、Ifyounoticethatwhensomeoneismissingorhurt,tellyourteacherimmediately、137第二节书面表达（满分25分）29．（25分）假如你是李华，刚从英国旅游回来，你非常感谢好友Rick的款待。得知他对中国即将到来的端午节（theDragonBoatFestival）感兴趣，请给他写封信，内容包括：1.感谢Rick的款待；2.介绍端午节（节日目的，庆祝活动等）；3.欢迎他来中国。_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

参考答案第一部分（共20小题，每小题1.5分，满分30分）1、A2、D3、C4、D5、A6、C7、A8、C9、A10、C11、B12、B13、A14、D15、A16、B17、B18、D19、C20、C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、B3、D4、B5、A22、1、B2、A3、D23、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）witheachotherandbreakintopieceswhichfallbacktotheEarth.Toavoidthis,scientistshaveinvented