福建省泉港區(qū)第一中學(xué)2024屆高三第二次模擬考試英語試卷含解析

福建省泉港區(qū)第一中學(xué)2024屆高三第二次模擬考試英語試卷考生須知：1．全卷分選擇題和非選擇題兩部分，全部在答題紙上作答。選擇題必須用2B鉛筆填涂；非選擇題的答案必須用黑色字跡的鋼筆或答字筆寫在“答題紙”相應(yīng)位置上。2．請用黑色字跡的鋼筆或答字筆在“答題紙”上先填寫姓名和準(zhǔn)考證號。3．保持卡面清潔，不要折疊，不要弄破、弄皺，在草稿紙、試題卷上答題無效。第一部分（共20小題，每小題1.5分，滿分30分）1．KatewasverysadoverlossofthephotosshehadshotinChina,____thiswasamemorysheespeciallytreasured.A．ifB．whenC．a(chǎn)sD．which2．—Wewouldappreciateitifyoucouldstayforlunch.—Sorry,I.Ihaveanotherappointment.A．won’t B．shan’t C．can’t D．mustn’t3．________yourblog,Iwouldhavewrittenbacktwodaysago.A．IfIread B．ShouldIreadC．HadIread D．IfIcouldhaveread4．Willitbeages______hegoesbacktoschool?I'msoworriedabouthim.A．before B．a(chǎn)fterC．when D．a(chǎn)s5．Themajorityofnewbusinessesfailbecause,________theyhaveaproductorservicethatfillsagapinthemarket,theyusuallylacktheskillsinsales,marketing,andadministration.A．nowthatB．evenifC．a(chǎn)slongasD．a(chǎn)sthough6．Moreandmorepeopleprefertoliveinthecountryside,_______appealforthemliesinthequietandslow-pacedlife.A．who B．WhichC．whose D．what7．I’veheardalotaboutyou.Yougotpromoted,right?______Manythanks.A．GoodforyouB．YouaskedforitC．ThereyouareD．You’vegonetoofar8．—Hey!EveryoneintheofficewasatthedinnerpartyinhonorofMr.Charlesexceptyou.Whathappened?—I______afterMike,mycolleague.Hewasbadlyill.A．havelookedB．waslookingC．wouldlookD．hadlooked9．Don'tyouthink_______ofgreatimportancethatweshouldkeepfitbytakingexerciseregularly?A．this B．that C．which D．it10．Julieisoneofthosewomenwhoalwaysthelatestfashion.A．putupwith B．keepupwith C．comeupwith D．getonwith11．—MayIgoouttoplaybasketball,Mum?—________Dowhatyoulike.A．Goahead! B．You’vegotit.C．It’syourturn. D．Notatall!12．Youwon’tfindpapercuttingdifficult_____youkeeppracticingit.A．evenifB．a(chǎn)slongasC．a(chǎn)sifD．eversince13．Hawkingbelievestheearthisunlikelytobetheonlyplanet_____lifehasdevelopedgradually.A．that B．whyC．where D．whose14．(2015·北京)___________theearlyflight,weorderedataxiinadvanceandgotupveryearly.A．Catching B．CaughtC．Tocatch D．Catch15．IwishI______atmysister’sweddinglastTuesday,butIwasonabusinesstripinNewYorkthen.A．willbe B．wouldbeC．havebeen D．hadbeen16．Obamadidn’texplain______anylargerprincipleshaveguidedhimthroughthehistoricconvulsionsofthe2011ArabSpring.A．what B．that C．where D．whether17．Yourletterwillgetattention!Theyknowyou’reexpectingtheanswer.A．careful B．common C．instant D．general18．Wherewasit______theroadaccidenthappenedtheotherday?A．that B．whenC．how D．which19．TrumpsaidhebelievesNorthKoreawill________itspromisetosuspendmissiletestswhilehepreparesforasummitwithKimJongUn.A．taketoB．makeupC．standbyD．holdout20．--Ifeelnervouswhentakinganexam.--andyoucandoitwell.A．TakeitweasyB．TakeyourtimeC．GoodluckD．It’suptoyou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）Asanyplanepassengerwillconfirm,acryingbabyisalmostimpossibletoignore,nomatterhowhardyoutry.Nowscientistsbelievetheymayhaveworkedoutwhy.Ababy’scrypullsattheheartstrings(扣人心弦)inawaywhileothercriesdon’t,researchersfound.Researchersfoundthatababy’scrycantriggeruniqueemotionalresponsesinthebrain,makingitimpossibleforustoignorethemwhetherweareparentsornot.Othertypesofcries,includingcallsofanimalsingreatpain,failtogetthesameresponsesuggestingthebrainisprogrammedtorespondspecificallytoababy’scry.AteamofOxfordUniversityscientistsscannedthebrainsof28menandwomenastheylistenedtoavarietyofcallsandcries.After100milliseconds,twopartsofthebrainthatrespondtoemotionlitup.Theirresponsetoababy’scrywasparticularlystrong.Theresponsewasseeninbothmenandwomen-eveniftheyhadnochildren.ResearcherDr,ChristineParsonssaid,“Youmightreadthatmenshouldjustnoticeababyandstepoveritandnotseeit,butit’snottrue.Thereisaspecialprocessinginmenandwomen,whichmakessensefromanevolutionaryviewthatbothmenandwomenwouldberespondingtothesecries,”Thestudyinvolvedpeoplewhowerenotparents,yettheyareallrespondingquicklytotheseparticularcriessothismightbeafundamentalresponsepresentinallofusregardlessofparentalstatus.ResearcherKatieYoungsaiditmaytakeabitlongerforsomeonetorecognizetheirownchild’scriesbecausetheyneedtodomore“fine-grainedanalysis”.Theteamhadpreviouslyfoundthatourreactionsspeedupwhenwehearababycrying.Adultsperformedbetteroncomputergameswhentheywereplayedthesoundofababycryingthanaftertheyheardrecordingsofadultscryingorhigh-pitched(高音的)birdsong.Thefindingscouldhelpshedlightonpost-natal(產(chǎn)后的)depressionwheremothersstruggletobondwiththeirnewbornbyshowinghowahealthybrainrespondstoababy’scries.1、Ababy’scryisdifficulttoignorebecauseit.A．keepsoncryingB．criesharderthanadultsC．causespeoplegreatpainD．makespeoplefeelstrongemotions2、Theunderlinedword“trigger”inParagraph2probablymeans“‘‘A．removeB．a(chǎn)voidC．causeD．cure3、WhatmayChristineParsonsagreeto?A．Almosteveryonemakescertainresponsetoababy’scries.B．Acryingbabymakesnosensetopeoplewithoutchildren.C．Menpaylessattentiontoacryingbabythanwomen.D．Parentscanhardlyrecognizetheirownbabies’cry.4、Computergamesarementionedinthetexttoshow.A．players’differentreactionstoacryingbabyB．baby’scryingcontributestoquickerreactionsC．theinfluenceofbaby’sandadult’scryingonperformanceD．it’shardtokeepone’sconcentrationwithacryingbabynearby22．（8分）Wefoundoutatornadowascoming.Secondslater,itblewawayourhouse.Thetornadolast4minutes,tous,itfeltlikealifetime.Onthedaythetornadohit,therewasnoindicationsevereweatherwasonitsway—theskywasblueandthesunhadbeenout.ThefirstalertmyhusbandandIgotcamefromsomescrollingtextontheTV.Heranupstairstofindmeinourthirdfloorbedroomandwechangedthechanneltoourlocalone.Nosoonerhadwefoundcoverageofthetornadothanitwasontopofus.ItwastheloudestthingIhaveeverheard.Thehouseshook,andthepowerwentout.Thewindbegantoroarthroughthehouse.Wehadstairstoguideustotherelativesafetyofthefirstfloor.Becausetheclosetdownthereisunderneathabrickstaircase,itseemedlikethestrongestplaceinourtownhouse.Ididn’tknowhoworifwewouldmakeitdownthesteps.Itriedtomoveforward,buttheintensepressureheldmeinplace.Inthosesecondsofstillness,Icouldnoticeeverythingaroundmemoving.Aswereachedthelastfewsteps,ourfrontdoorblewout.Piecesofglassthatlookedlikecrushedicefleweverywhere.BythetimeIreachedthecloset,thetornadohadbeenoverusforaboutaminute.Jimmypushedmedowntotheclosetfloor,buthecouldn’tgetinsidehimself.IfIhadletgo,Jimmywouldhaveflownrightoutthebackofthehouse.“Holdon!Holdon!”heyelled.Buttherewasnothinginthisclosettoholdonto.Allofasudden,Jimmyliftedoffhisfeetlikepeopleintornadoesdointhemovies.Ithoughthewasgone.Andtheneverythingstopped.Helandedonhisfeet.Inthosefirstquietmoments,Icouldn’tbelieveitwasover.Ourneighborsaysthestormlastedfourminutes.Inthattime,fourofthetwelvetownhousesinourunitwerecompletelydestroyed.Ofthehousesleftstanding,ourssufferedthemostdamage.Amazingly,noneofuswereseverelyinjured.1、Thestoryisarrangedintheorderof.A．Time.B．Place.C．Examples.D．Opinions.2、WherewasthetornadowhentheyknewthebadnewsfromtheTV?A．Ithadalreadygone.B．Itdieddownslowly.C．Itwasstillfarawayontheway.D．Itwasabouttocomerightaway.3、Whatdidtheauthorfeelimmediatelyafterthetornadowasover?A．unbelievable.B．a(chǎn)mazing.C．frightened.D．calm.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）BarcelonaCicloTour,1ofthe10bestbiketoursintheworld!Gaudi,theancientstreetsofthegothicquarter,themulti-culturaldistrictofElRaval.thebeachesandmodernismbuildings,bybike!TheDailyBarcelonaBikeTourThebestwaytoseeBarcelonaisbybike!EnjoyBarcelona’smostpopularsightsincluding:theworksofGaudiincludingtheSagradaFamilia,theGothicQuarter,theCathedralandRomanCitywalls,PareCiutadella,thebeachesandmuchmore,allinarelaxingtourwith17stops.InEnglish,ourtrainedguidestellthefascinatingtruthandstoriesbehindBarcelona’smostfamousbuildingsandmanyhiddensecrets.Nopreviousreservationneeded.JustcomealongtoexperiencetherealBarcelonaasyoudiscoverthewholecitybybike.Thingspreparedforyou●1bikeperperson●3.5-hourtourwithguide●Afreebottleofwater●Afreedrinkatabeachcafé●Ahandlebar-bagforpersonalbelongings●FreehelmetsandchildseatsavailableonrequestWhatdoyouneedtobring?Aslittleaspossible:comfortableclothes,somemoneyandacamera.Wecanalsostoreyourbackpacksafelyinalocker.Tourtimes●11:00amMorningTourEverydayoftheyearexceptDecember25andJanuary1.●4:30pmAfternoonTourEverydayfromApril15toOctober31.●7:30pmNightTourEveryThursday,Friday,SaturdayandSundayfromJuneItoSeptember30andeveryFridayandSaturdayinOctober.DeparturepointPlacaCatalunya,atthedoorofHardRockCaféWatchforourguidesintheirCicloTourT-shirts.Pleasearrive10minutesbeforedeparturetime.ContactusIfyouarecomingtoBarcelona,donothesitatetocontactusforaquote,Wewouldbehappytoprepareabiketourforyou.Tel:+349331719701、Accordingtothetext,whichisincludedinthebiketour?A．ASpanish-speakingtourguide.B．Afreemealinalocalrestaurant.C．Freeadmissionto17popularsights.D．Afreebagforpersonaluse.2、IfyoutraveltoBarcelonaduringtheSpringFestival,whichtourcanyouchoose?A．The11:00amMorningTour.B．The4:30pmAfternoonTour.C．The7:30pmNightTour.D．Noneoftheabove.3、Tojoininthebiketour,whatdoyouneedtodo?A．Buyahelmetandbringabottleofwater.B．Payforthetouratleastonedayinadvance.C．Cometothedeparturepoint10minutesearly.D．GetaT-shirtfromthetourguidewhenyouarrive.4、Whatisthetextintendedas?A．Atraveltip. B．Atourad.C．Atraveljournal. D．Atourschedule.25．（10分）Americansaremorestressedthanever,accordingtoanAmericanPsychologicalAssociationsurvey,andnearlyone-thirdofthepeoplesaystressimpactstheirphysicalormentalhealth.Ifyouhaveanyofthesesymptoms,yourstressmightbemakingyousick.Here’showtobattleagainstthem.Ifyou’veneversufferedfromheadachesbutsuddenlyyourheadisconstantlystriking,youmightbetoostressed.Stressreleaseschemicalsthatcancausechangestonervesandbloodvessels（血管）inthebrain,whichbringsonaheadache.Stresscancausethemormakethemworse.It’salsocommonforyourmusclestotenseupwhenyou’restressed,whichcanalsocauseaheadache.WHATTODO:Ifyoudon’twanttotakemedicine,tryspreadinglavender（薰衣草）oilonyourtemples（太陽穴）whenaheadachestarts.Stresscanmakeyoumentallysick,too.Toomuchofthestresshormonecortisol（皮質(zhì)醇）canmakeithardertoconcentrate,causingmemoryproblemsaswellasanxietyordepressionsaysDr.Levine.WHATTODO:Relaxuntilyouregainyourconcentration.Practiceclosingyoureyesandbreathinginandoutslowly,concentratingonlyonyourbreath.Losingafewstrandsofhairisnormal—oldhairfollicles（囊）arereplacedbynewonesovertime—butstresscandisturbthatcycle.Significantstresspushesalargenumberofhairfolliclesintowhat’scalledarestingstageandthenafewmonthslaterthosehairsfallout,accordingtoMayoClinic.org.Stresscanalsocausethebody’sresistantsystemtoattackyourhairfollicles,resultinginhairloss.WHATTODO:Bepatient.Onceyourstresslevelreturnstonormal,yourhairshouldstartgrowingback.187、Ifyou’restressed,youmighthaveoneofthefollowingsymptomsEXCEPTthat.A．youkeepgettingheadaches B．youalwayshaveacoldC．yourhairisfallingout D．yourbrainfeelsconfused1、Whichofthefollowingissuggestedifyourbraingoesoutoffocus?A．Breathingslowlywithyoureyesclosed.B．Waitinguntilyourbrainreturnstonormal.C．Spreadinglavenderoilonyourtemples.D．Relaxingandattackingyourbrainsoftly.2、Whatwillhappenoncewegetoverourstressaccordingtothepassage?A．Ourhairstartsfallingoutandthengrowsback.B．Ourbody’sresistantsystemattacksyourhairfollicles.C．Ourhairstartsgrowingagain.D．Aseriousheadachestarts.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）OvertheyearsIhavereceivedmanyChristmasgifts.However,thebestoneI’veeverreceivedwaspresentedbya1IneverknewhisnameandIonlyhad2withhimforlessthan60seconds,butthemomentchangedthe3IthinkaboutpeopleandChristmas.I4BlackFridaysales.It’softenlotsofpeople5theshopsmerelytopickupbargains.Theirintentionsarecompletelyunrelatedtothe6timeofyear.ItwasoneBlackFridaymorningseveralyearsago7mywifeandIwenttothelocaldepartmentstoretopurchaseachild’s8forourson.Westoodwithaverylargecrowd,9forthemanagetoblowthewhistle.Onhearingthe10,peoplewereallscrambling（爭先恐后）togetthebargains.I11myopportunityandliftedoneoftheboxescontainingbikes12Ifeltsomemildresistance.Ilooked13toseeoneofthelargestgentlemenI’deverseeninmylife.“Frightening”wasnottheworldto14hispresence.Iunwillingly15theboxbut,tomysurprise,hegentlypusheditbackin16direction.Oureyesmadecontactandhegavemea17smile,saying,“MerryChristmas.”MywifeandIwenttothe18andpaidforthebike.AllthewayhomeIwasthinkingthatthismomentwasmuchthebestChristmasgiftI’deverreceived.Asimple19ofkindnessfromastranger20allstereotypes（成見）andprejudicesImayhavehad.I’llneverforgetit.1、A．friendB．colleagueC．strangerD．brother2、A．funB．a(chǎn)rgumentC．conversationD．contact3、A．wayB．habitC．a(chǎn)ttitudeD．pattern4、A．enjoyB．forgetC．hateD．expect5、A．breakingintoB．crowdingC．gettingintoD．wandering6、A．joyfulB．discouragingC．a(chǎn)nnoyingD．busy7、A．sinceB．whenC．beforeD．until8、A．toyB．bookC．boxD．bike9、A．preparingB．lookingC．waitingD．crying10、A．whistleB．bellC．screamsD．cheers11、A．missedB．sawC．offeredD．quitted12、A．GraduallyB．ImmediatelyC．OccasionallyD．Suddenly13、A．downB．upC．throughD．forward14、A．introduceB．stateC．describeD．say15、A．takeawayB．takedownC．putawayD．putdown16、A．hisB．itsC．myD．a(chǎn)nother17、A．friendlyB．regretfulC．frighteningD．special18、A．exitB．checkoutC．storeD．stand19、A．a(chǎn)ctB．behaviorC．wordD．movement20、A．deepenedB．replacedC．cleanedD．removed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(dāng)?shù)膯卧~或括號內(nèi)單詞的正確形式。27．（15分）Ifyoudon’tuseyourarmsoryourlegs,theybecomeweak;whenyoustartusingthemagain,they1．(slow)becomestrongagain.Everyoneknowsthat.Yetmanypeopledon’tseemtoknowthatmemoryworksin2．sameway.Whensomeonesaysthathehasagoodmemory,hereally3．(mean)thathekeepshismemoryinpracticebyusing4．.Whensomeoneelsesaysthathismemoryispoor,hereallymeansthathedoesnotgiveitenoughchance5．(become)strong.Ifafriendsaysthathisarmsandlegsareweak,weknowthatitishisownfault.Butifhetellsusthathehasapoormemory,manyofusthinkthathisparentsare6．(blame),andfewofusknowthatitisjusthisownfault.Haveyoueverfoundthatsomepeoplecan'treadorwritebutusuallytheyhave7．(good)memories?Thisis8．theycan’treadorwriteandtheyhavetorememberdays,names,songsand9．(story),sotheirmemoryisthewholetimebeingexercised.Soifyouwanttohaveagoodmemory,learnfromthem.Practice10．(remember)thingsinawayasthesepeopledo.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，請你修改你同桌寫的以下作文。文中共有10處語言錯誤，每句中最多有兩處。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。WelcometotheGreatWall、Measuredmorethan6,000kilometersinlength,theGreatWallisknownasthelongwallintheworld、Ithasalonghistoryofmorethan2,000years、ThatisamazingabouttheGreatWallisthatitismainmadeofstonesandbricks,andalltheconstructionwasdonebyhand、Thoughitwasusedtoprotectthecountryfromforeigninvaders,everyfewhundredmetersalongwiththeGreatWall,therewasawatchtower、Now,assymbolofChina,theGreatWallwillbecomeoneofthemostfamoustouristattractionsintheworld、ItisnowonderfulthattheGreatWallattracthundredsofthousandsofforeigntouristseveryyear、49第二節(jié)書面表達(dá)（滿分25分）29．（25分）假如你是李華，打算寒假去英國旅游，在網(wǎng)上預(yù)定了倫敦一家酒店。你的航班將于2月13日晚上8點抵達(dá)希思羅(Heathrow)機(jī)場，出發(fā)前你給聯(lián)系人Mr.Green寫一封郵件詢問相關(guān)事宜，要點如下:1、抵達(dá)酒店交通2、用餐3、推薦景點注意:1、詞數(shù)100左右。2、可以適當(dāng)增加細(xì)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、C2、C3、C4、A5、B6、C7、A8、B9、D10、B11、A12、B13、C14、C15、D16、D17、C18、A19、C20、A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、D2、C3、A4、B22、1、A2、D3、A23、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.Themajorproblemwiththespacetrashisthatitmayhitworkingsatellitesanddamagetravelingspacecraft(飛船).Moreover,piecesofjunkmaycollide（碰撞）witheachotherandbreakintopieceswhichfallbacktotheEarth.Toavoidthis,scientistshaveinventedse