重慶市江津區(qū)永興初級中學(xué)2025屆高考英語倒計時模擬卷含解析

重慶市江津區(qū)永興初級中學(xué)2025屆高考英語倒計時模擬卷考生請注意：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(biāo)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?？荚嚱Y(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．PeopleexpectShanghaiDisneylandParktoofferbetterservicethan________ofTokyo’s.A．this B．it C．one D．that2．—DidMaxgototheconcertwithhisfamilyyesterday?—Thereportscheduledtobehandedintomorrow,he_______it.A．couldn’thaveattended B．needn’thaveattendedC．wouldn’tattend D．shouldn’tattend3．Thesediagramsareespeciallyhelpfulwhenwehaveaconcreteproblem______athand.A．besolvedB．tosolveC．solvedD．beingsolved4．Salesdirectorisaposition_______communicationabilityisjustasimportantassaleskills.A．which B．thatC．when D．where5．－Theonlineshopkeeperhasmadeanapologyforhisrudebehavior.－OK.Ifyou’restillnotsatisfied,youcan_______compensation.A．claim B．a(chǎn)ffordC．sacrifice D．dismiss6．---Butforyourtimelywarning,weintogreattrouble.---Well,youknowwe’refriends.A．wouldget B．musthavegot C．wouldhavegot D．can’thavegot7．I______forShanghaithisSaturday,soIwanttoknowwhentheearliestplane______.A．leave;takesoffB．a(chǎn)mleaving;takesoffC．leave;istakingoffD．a(chǎn)mleaving;istakingoff8．Iwantedsomemorecoldmeatbuttherewas_____left.A．none B．noone C．a(chǎn)ny D．some9．----Therewon’tbeanywheretopark.----Oh,_______.Let’strythesubway.A．that’sarealbargainB．that’sagoodpointC．that’sreallysomethingD．that’sallsettled10．---Excuseme,wouldyouplease______mesomepetrol?---Sorry.Ihaveonlyalittleleftinmycar.A．spareB．saveC．shareD．spend11．henewly-discoveredstarwasnamed_____aChineseastronomer________hiscontributionstoastronomy.A．for;infavorof B．a(chǎn)fter;inhonorofC．by;inmemoryof D．a(chǎn)s;inpraiseof12．Mr.Greenwasveryfamouswhenhelivedthere.Thereis______tobesomeoneinthisdistrictwhoremembershim.A．content B．opposedC．bound D．restricted13．----Whatdoyouthinkofzoology?----Inmyopinion,zoologyis______botany.A．a(chǎn)subjectsointerestingasB．a(chǎn)sainterestingsubjectasC．a(chǎn)sinterestingasubjectasD．interestingasasubjectas14．Theyaredeterminedtogointothedarkcave,________mywarningofdanger.A．regardlessofB．becauseofC．a(chǎn)partfromD．insteadof15．Manypeoplecomplainedaboutthestoneslyingonaroad,but_______didanythingaboutgettingthestonesoutoftheway.A．both B．noone C．none D．a(chǎn)ll16．Theaccidenthavebeencausedbyadogrunningacrosstheroad,butwedon’tknowforsure.A．might B．shouldC．will D．must17．Ihavetorescheduletheappointmentwithyousincethereisa______inmyarrangement.A．contract B．contrast C．connection D．conflict18．Hewaselected______presidentofthecompany,and_____newscame,infact,as______surprise.A．a(chǎn);the;X B．X;the;a C．a(chǎn);X;the D．the;the;a19．—I’mtiredout.Ican’trunanyfurther,Tom.—________!Mike.I’msureyoucandoit.A．Comeon B．NohurryC．Noproblem D．Welldone20．Bobwastryingto________thatheknewthefamoussingerwhowouldperforminourcity.A．letout B．layoutC．figureout D．makeout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）TheZHotelisintheheartofLondon’sWestEndandhascomfortableaccommodationinacontemporarydesign.Allroomsincludehandcraftedbeds,48-inchSamsungHDTVswithfreeSkySportsandMoviechannels,andfreeWi-Fi.Eachroomalsohasunder-bedstorageforanovernightbag,andwall-mountedhangingspaceforclothing.TheZHotelalsoofferswheelchairaccessiblerooms.ContinentalbreakfastisservedinTheZCaféeverymorning,includingsmokedsalmon,freshbread,freshfruitsaladandbaconrolls.Aselectionofsalads,sandwichesandhotdishesareonofferthroughouttheday.Thehotelisa5-minutewalkfromPrinceofWalesTheatreandChinatownLondon,LeicesterSquare,PiccadillyCircusandTrafalgarSquare.HeathrowAirportcanbereacheddirectlyfromPiccadillyCircusUndergroundStation.Thisisourguests’favoritepartofLondon,accordingtoindependentreviews.Thisareaisalsogreatforshopping,withpopularbrandsnearby:Apple,H&M,Zara,BurberryandChanel.TheZHotelisratedforthebestvalueinLondon!Guestsaregettingmorefortheirmoneywhencomparedtootherhotelsinthiscity.Comeandstaywithus!Mostpopularfacilities:◆luggagestorage◆Heating◆FreeWi-Fi◆Airconditioning◆24-hourfrontdesk◆Dailymaidservice◆Parking◆LiftPrices:RoomtypePricesOptionsDoubleroom--non-smoking￡179·Non-refundable(不退款)·GoodBreakfast￡9.50TwinRoom--non-smoking￡185·Non-refundable·GoodBreakfast￡9.50QueenRoom--disabilityaccess￡219·Payatthehotel·GoodBreakfastincluded572、Whenstayinginthishotel,youwillenjoyallofthefollowingEXCEPT________.A．freeWi-Fi B．a(chǎn)TVwithsomefreechannelsC．a(chǎn)irportpick-upservice D．under-bedstoragespace1、Ifamaninawheelchairwantstostayinthishotelfortwonights,heshouldpay________.A．￡438 B．￡404C．￡358 D．￡3702、Fromthepassagewecanlearn________.A．thehotelisclosetoHeathrowAirportB．thehotelservesChinese-stylebreakfastC．thehotelisgoodvalueforguests’moneyD．thereisashopwithpopularbrandsinthehotel22．（8分）We’veallbeenthere:thosetimesyouneedtoargueyourpointofviewtosomeonewhoyouknowdisagreeswithyou.Youimmediatelygotoyourkeyboardandstarttotypeoutthat280-charactertweet,theFacebookreply,oraparagraphs-longemail.Surelythereason,logic,andstrongpowerofyourwrittenwordswillconvincewhoeveritiswhodisagreeswithyoutoseeyourpointofview.Butnewresearchsuggestsadifferentidea.ThatresearchwasconductedbyJulianaSchroeder,assistantprofessorofUniversityofCalifornia,Berkeley,andhercolleagues.InSchroeder’sstudyofalmost300people,participantswereaskedtowatch,listen,andreadargumentsaboutsubjectstheyagreedordisagreedwith.Theywereaskedtojudgethecharacterofthecommunicatorandthequalityoftheargument.Schroeder’steamfoundthattheparticipantswhowatchedorlistenedtothecommunicatorwerelessdismissive(抵觸的)oftheirclaimsthanwhentheyreadthatcommunicator’ssameargument.Theideaforherstudycamefromanewspaperarticleaboutapolitician.Oneofusreadaspeechthatwasprintedinanewspaperfromapoliticianwithwhomhestronglydisagreed.Thenextweek,heheardtheexactsamespeechplayingonaradiostation.Hewasshockedbyhowdifferenthisreactionwastowardthepoliticianwhenhereadthespeechcomparedtowhenheheardit.Whenhereadthestatement,thepoliticianseemedidiotic,butwhenhehearditspoken,thepoliticianactuallysoundedreasonable.Sointheworkplace,speakingtosomeoneinpersonofteninvolvesnothingmorethanwalkingafewdoorsdowntotheiroffice.Andthat’sexactlywhatyoushoulddoifyouneedtoconvincethatbossorcolleagueofwhyyourblueprintforthecompanyorprojectistherightone.Onlyasalastwayshouldyoutrytocommunicatewithsomeonewhoyoudisagreewithoversocialmedia.Twitter’slimitedtextallowanceandsocialmediausers’shortattentionmakearguingyourpointanuphillbattle.1、What’stheresultoftheresearch?A．Writtenwordsaremorelogicalandreasonable.B．Peopleprefertocommunicatewithkeyboard.C．Whenreadinganargument,theparticipantswerelessdismissivethanhearingit.D．Oral,notwritten,communicationworksbetter.2、Whyisthepoliticianmentionedinparagraph3?A．Tointroducethetopicfordiscussion.B．Tosummarizethepreviousparagraphs.C．ToexplainwhySchroederconductedtheresearch.D．Tointroducethepolitician’sspeech.3、Whatdoestheunderlinedword“idiotic’’inparagraph3mean?A．Wise. B．Practical. C．Silly. D．Special.4、Whatcanweinferfromthelasttwoparagraphs?A．Topersuadeyourboss,youneedtowalktohisofficeandleaveamessage.B．It’sdifficulttofullyexplainyourpointsduetosocialmedia’slimitation.C．Arguingoversocialmediaismoreconvenientthanspeakinginperson.D．Communicatingwithothersoversocialmediaisencouraged.23．（8分）SusanBrownellAnthonywasaladyaheadofhertime.Shefoughtforwomen'srightslongbeforeitbecameapopularevent.SusanwasbornonFebruary15,1820,inAdams,Massachusetts.Atthattime,womenhadfewrights.Theycouldnotownproperty（財產(chǎn)）.Moneyearnedbyamarriedwomanbelongedtoherhusband.Majordecisionsinvolvingchildrenweremadebythefathers.Womencouldnotvote.Attheageof15,Susanbecameaschoolteacher.Shetaughtfor15years.Thenshebeganorganizingwomen'sgroupstopromoterightsthatwereimportanttowomen.Shehelpedgainbettereducationalrightsforwomen.Shehelpedgivemarriedwomenpossessionoftheirearnings.AftertheCivilWar,Susanbecameveryinvolvedinthewomen'svotingmovement.Afteryearsoflecturing,writing,andappealingbySusanandotherwomen,somepartsoftheUnitedStateschangedtheirlawstogivewomentherighttovote.ThefirststatewasWyomingin1869.OtherareasandstatesgraduallyfollowedWyoming'sdecision.Itwasnotuntil1920thattheU.S.Constitution（憲法）waschangedtogiveallwomenvotingrights.SusanBrownellAnthonydiedin1906attheageof86.ShewaselectedtotheHallofFameforGreatAmericansin1950.ShewasthefirstAmericanwomantohavealikeness（肖像）ofherfaceonacoin.Itwasthe1979SusanBrownellAnthonydollar.1、WhatwasthesituationofAmericanwomenlikewhenSusanwasborn？A．Theyhadlowsocialplace.B．Theycouldvoteaftergettingmarried.C．Theymanagedmoneyfortheirhusbands.D．Theywereresponsiblefordecision-making.2、Whatisthethirdparagraphmainlyabout？A．Susan'steachingexperiences.B．Susan'seducationalbackground.C．Susan'seffortstostopslavery.D．Susan'sfightingforwomen'srights.3、Whatdoestheunderlinedword"decision"inthefourthparagraphreferto？A．Promotingthesocialmovement.B．ChangingtheU.S.Constitution.C．Givingwomenvotingrights.D．Unitingotherareasandstates.4、Whatmaybethebesttitleforthepassage？A．ThefirstAmericanwomantoinventcoinsB．Theproblemofwomen'srightsintheU.S.C．ThemostpopularwomenorganizationD．Apioneerinfightingforwomen'srights24．（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．Howtotakeaplane25．（10分）TheHongKong-Zhuhai-MacauBridge,theworld'slongestsea-basedproject,comprisesfourparts:a22.9-kilometersteelbridge,twoartificialislands,asubmergedseatunnelextendingfor6.7kilometers,aswellasleadingbridgesthatconnectthebridgetothecities.Forabridgeproject,designersprefertobuildallthestructureontheground,andonlychoosethetunnelwhenthereisnoalternative.However,fortheHZMB,themostpracticaldesignistointegratebridge,islandandtunneltoformacompletecross-seachannel."ThePearlRiverEstuary（河口）holdsaworld-levelshippingchannel.Smoothtrafficshouldbeguaranteed.AndthelocationisneartheHongKongInternationalAirport.Withabout2,000flightstakingoffandlandingattheairport,thebridgecannotbebuilttoohighforsafetyreasons/5saidMengFanchao,chiefdesigneroftheproject.“Butyoucannothaveasubmergedseatunnelwithoutanysupport.Thatforcedustobuildtheartificialislands.”Chineseengineersdeclaredatrailininstallingdeep-immersedtunneltubes.6tThereisnomodelforustorefertoasallthecasesareshallow-buriedtubes,9,saidMeng."Forlackofexperience,theinstallationofthefirsttubelastedfor96hours,"saidYinHaiqing,deputymanageroftheProjectManagementDepartment.''Everyonewasexhaustedwhenwemadeit.”The6.7-kilometertunnelistheworld'slongestsubmergedseatunnel.Twoartificialislands,coveringanareaof200,000squaremeters,helpcreateasmoothtransitionbetweenbridgesectionsandtunnels.Differentfromtraditionalisland,theengineersput120steelcylinders（圓柱）witha22-meterdiameter（直徑）intotheseabed,makeouttheshapeofanisland,andfilltheislandwithsoil.Itisaninnovativewaytheyadoptedtobuildtheartificialisland,makingitfirmer,moreefficientandfriendlytothemarineecology.TheHZMBprovidesafixedlinkbetweenthetwoChineseeconomiccentresHongKongandMacauandthemainlandofChinaatZhuhai.1、Whyisn'tthebridgebuilttoohigh?A．Thebridgehasn'tanysupport. B．Itisn'tsafetobuildittoohigh.C．Theengineerslackexperience. D．Theengineerswanttomakeitspecial.2、WhatcanweknowabouttheHZMBfromthetext?A．AllthestructureoftheHZMBisbuiltontheground.B．The6.7-kilometretunnelistheworld'slongesttunnel.C．TheHZMBisthefirsttoinstalldeep-immersedtunneltubes.D．Theinstallationofthefirsttunneltubefailedforthefirsttime.3、What’sthefunctionoftwoartificialislands?A．Todeclareatrailinbuildingasea-basedbridge.B．Topreventthepollutionfromaffectingthemarineecology.C．Toensuresmoothtrafficbetweenbridgesectionsandtunnels.D．Toguaranteethesafetyoftheshipsgoingthroughtheestuary.4、Whattypeofwritingisthistext?A．Anadvertisement. B．Sciencefiction.C．Anannouncement. D．Anewsreport.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）IstoppedspeakingbecauseIfoundmyselfarguingallthetime.AfterwitnessinganoilspillinSanFranciscoBay,I1usingvehiclesandstartedwalkingeverywhereasastatementabout2.Ioftenkeptgettinginto3aboutwhetheronecouldmakea4andarguedabouthoweveryoneshoulddowhatIwasdoing.Onmy27thbirthday,Idecidednottospeakforoneday,asakindof5tomycommunity.WhenIwokeupthenextday,Ididn'tseeany6tospeak,soIdidn't.Aweeklater,peoplestartedgetting7.Mygirlfriendwantedmetostop.Myparentsevengotangrywithme.ButIdidn'tchangemyidea.Onthe10thanniversaryofnot8，Ispokeforaday.Ididn'twantittofeelasifitwasn'ta9.IwasinCaliforniaandI10myparents.Mymotherpickedupandthoughtitwasmybrother11around.Ihadtoproveitwasmebytellinghersomethingonlyweknew.12notspeakingfor17years,IfeltIhadsomethingtosay.Peoplecameto13me.Myfirstwordswere,“Thankyouforbeinghere.”ButIdidn'trecognizemy14.Havinglistenedtothousandsofpeople,Irealizedwehada15viewoftheenvironment.Peoplealwaysthinkit'saboutplantingmoretrees,butit'smorethanthat;it'sabouthowwetreateachother,andthatalso16economicequalityandcivilrights.NowIgivetalksaroundtheworld.Istartedusing17again.Istillpractisebeing18everymorning.Itremindsmetolisten19；nottojudgewhatIthinkI'mhearing,buttotrytounderstandwhatpeoplearereally20.1、A．turnedtoB．thoughtaboutC．gaveupD．insistedon2、A．pollutionB．wasteC．exerciseD．support3、A．fightsB．trapsC．dilemmasD．debates4、A．promiseB．differenceC．planD．living5、A．encouragementB．beliefC．punishmentD．gift6、A．reasonB．signC．chanceD．language7、A．puzzledB．disappointedC．worriedD．interested8、A．a(chǎn)rguingB．ridingC．speakingD．failing9、A．warningB．disadvantageC．strengthD．choice10、A．missedB．calledC．visitedD．thanked11、A．walkingB．comingC．messingD．hanging12、A．ThoughB．OnceC．IfD．After13、A．hearB．comfortC．instructD．help14、A．parentsB．voiceC．photoD．handwriting15、A．validB．correctC．narrowD．universal16、A．provesB．includesC．improvesD．insures17、A．phonesB．computersC．loudspeakersD．vehicles18、A．silentB．deafC．friendlyD．patient19、A．constantlyB．properlyC．largelyD．merely20、A．worryingB．doingC．a(chǎn)dvisingD．saying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）IntheUSAthehighschoolgraduationceremonyisofgreat1．(important).12thgradestudents,orseniors,whoareabout17or18yearsold,lookforwardto2．(attend)thisevent.ThegraduationceremonyitselftakesplaceattheendofMayorbeginningofJune,whichusually3．(include)musicawards,andaguestspeaker.Afterthespeech,studentswalktothefrontoftheroomtoreceivetheirdiplomasfromtheheadmaster.Studentsstartpreparingforgraduationalongtime4．ithappens.Theyorderringsdesigned5．(special)fortheirclass.Anothertraditionistohavetheirphotographs6．(take).Thesephotographsareused7．theclassyearbook,whichisaprintedbookaboutallthestudentsintheschool.Studentshavespecialcardscalledannouncementsprintedtosendtofriendsandrelativestotellthemabouttheirgraduation.Thecardsofteninclude8．invitationtotheceremony.Ifyoureceiveit,youshouldsendapresent9．moneytothegraduate.Afewweeksbeforetheceremony,thestudentsaremeasuredthecapthattheywillwearattheceremony.Aftertheceremony,10．(family)usuallyhavegraduationpartiesforfriendsandrelatives.It’sadayandanightthathighschoolseniorsrememberforalongtime.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）文中共有10處語言錯誤，每句中城多有兩處。錯誤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。Livingwithoutanaimislikesailingwithoutcompass.Ifthereisnoaim,wewillgetlose.Lastterm,Icouldn’tacceptthetruthwhichIfailedinmymathexamination.Idecidedtogiveitup,soIskippedfromclassesfrequently.Consideredmycase,myteacherofferedmeseveraldetailedapproachandadvisedmetosetashort-termgoaltoimprovemymath.Finally,Iworkharderthaneverandmadegreatprogressinhermath.Inmyopinion,successliesinaseriesofgoals.However,weshouldremembertomakeourtargetsclearlyandtryourbesttorealizeourdreams.第二節(jié)書面表達(dá)（滿分25分）29．（25分）假設(shè)你是李華，你的外國朋友Tom即將作為交換生來中國學(xué)習(xí)一年。在中國期間，他想要下載一款新媒體軟件來跟中國的同學(xué)朋友交流。請根據(jù)以下內(nèi)容寫一封信，向他推薦WeChat這款軟件。寫作內(nèi)容:1.寫信目的2.介紹軟件及推薦理由3.結(jié)尾段注意: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；3.開頭語已為你寫好。DearTom,________________________________________________________________________________________________________________________________________________________Yoursfaithfully,LiHua

參考答案第一部分（共20小題，每小題1.5分，滿分30分）1、D2、A3、B4、D5、A6、C7、B8、A9、B10、A11、B12、C13、C14、A15、C16、A17、D18、B19、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、572、C1、A2、C22、1、D2、C3、C4、B23、1、A2、D3、C4、D24、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,scientistshaveinventedseveralwaysforclearin