2023年高考英語模擬試卷注意事項：1．答卷前，考生務必將自己的姓名、準考證號、考場號和座位號填寫在試題卷和答題卡上。用2B鉛筆將試卷類型（B）填涂在答題卡相應位置上。將條形碼粘貼在答題卡右上角"條形碼粘貼處"。2．作答選擇題時，選出每小題答案后，用2B鉛筆把答題卡上對應題目選項的答案信息點涂黑；如需改動，用橡皮擦干凈后，再選涂其他答案。答案不能答在試題卷上。3．非選擇題必須用黑色字跡的鋼筆或簽字筆作答，答案必須寫在答題卡各題目指定區域內相應位置上；如需改動，先劃掉原來的答案，然后再寫上新答案；不準使用鉛筆和涂改液。不按以上要求作答無效。4．考生必須保證答題卡的整潔。考試結束后，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．—Jackshouldhavecalmeddownattheparty!—Butthekidsmadesomuchnoisethathecouldn’thelpbut_______.A．facethemusicB．eatlikeabirdC．mendhiswaysD．flyoffthehandle2．Thegovernmentshoulddevelopsystemtopredictwhenwildfiresoccurandgivewarningsintime.A．previous B．reliable C．reasonable D．responsible3．—“DoyoumindifIlookatyournotes?”—“Ofcoursenot._______.”A．NoproblemB．BemyguestC．WithpleasureD．Notatall4．Ourteamisworld-classanditwasnosurprisethatwewonbysuchamargin.A．low B．highC．wide D．narrow5．It_____aSaturdayafternooninMay____Margaretcouldarrangeformetomeetherelder,sister.A．wasuntil;whenB．wasuntil;thatC．wasnotuntil;whenD．wasnotuntil;that6．—DidyouhavedifficultyfindingAnn'house?—Notreally.She___uscleardirectionsandwewereabletofindit.easily?A．wastogive B．hadgivenC．wasgiving D．wouldgive7．That’s

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lightB．cometolifeC．comeacross8．—Lindahasn’tshownupyet.—It’sstrange.She____.A．could B．might C．musthave D．shouldhave9．There’sanotherwaytosurvivethiscompetition--awaynooneeverseemstotellyouabout,_____youhavetolearnforyourself.A．one B．it C．that D．another10．---Ican’tthinkwhyhe_____soangry.Imeantnooffence.---It’stypicalofhimtobesensitive.A．shouldhavebeen B．musthavebeenC．mighthavebeen D．canhavebeen11．ThecourseaboutChinesefoodattractsover100studentsperyear,_______uptohalfarefromoverseas.A．inwhich B．ofwhomC．withwhich D．forwhom12．Ithoughtithardtocompletetheprojectthen,butI________mymind.A．willchangeB．wouldchangedC．havechangedD．hadchanged13．—Hi,Tom!IgotachancetobeanexchangestudentinHarvardUniversity.—_________!Ihadbeenexpectingtostudythere.A．Luckyyou B．HavefunC．Takeiteasy D．Forgetit14．,hetalksalotabouthisfavoritesingersafterclass.A．Aquietstudentashemay B．QuietstudentashemaybeC．Beaquietstudentashemay D．Quietashemaybeastudent15．________wellformyjobinterview,IreallyhadbutterfliesinmystomachonmywaytothecompanyIhadappliedto.A．Havingnotprepared B．NothavingpreparedC．Nottohaveprepared D．Tohavenotprepared16．IwishI______atmysister’sweddinglastTuesday,butIwasonabusinesstripinNewYorkthen.A．willbe B．wouldbeC．havebeen D．hadbeen17．Moreoftenthannot,theenterprisearoundusaregettingevenricher,________recipeisdon’tputallyoureggsinonebasket.A．ofwhich B．whichC．whose D．ofwhom18．________themselvesinthecommunityservices,studentscangainexperienceforgrowth.A．Involved B．ToinvolveC．Havingbeeninvolved D．Involving19．Jane’sgrandmotherhadwantedtowritechildren’sbookformanyyears,butonethingoranotheralwaysgotinway.A．a;不填 B．the;theC．不填;the D．a;the20．Wherewasit______theroadaccidenthappenedtheotherday?A．that B．whenC．how D．which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）InancientEgypt,ashopkeeperdiscoveredthathecouldattractcustomerstohisshopsimplybymakingchangestoitsenvironment.Modernbusinesseshavebeenfollowinghislead,withmoretactics(策略).Onetacticinvolveswheretodisplaythegoods.Forexample,storesplacefruitsandvegetablesinthefirstsection.Theyknowthatcustomerswhobuythehealthyfoodfirstwillfeelhappysothattheywillbuymorejunkfood(垃圾食品)laterintheirtrip.Indepartmentstores,thewomen’sshoesectionisgenerallynexttothewomen’scosmetics(化妝品)section:whiletheshopassistantisgoingbacktofindtherightsizeshoe,boredcustomersarelikelytowanderoverandfindsomecosmeticstheymightwanttotrylater.Besides,businessesseektoappealtocustomers’senses.Storesnoticethatthesmellofbakedgoodsencouragesshopping,sotheymaketheirownbreadeachmorningandthenfanthebreadsmellintothestorethroughouttheday.Musicsellsgoods,too.ResearchersinBritainfoundthatwhenFrenchmusicwasplayed,salesofFrenchwineswentup.Whenitcomestothesellingofhouses,businessesalsousehighlyrewardingtactics.Theyfindthatcustomersmakedecisionsinthefirstfewsecondsuponwalkinginthedoor,andturnitintoabusinessopportunity.ACaliforniabuilderdesignedthestructureofitshousessmartly.Whenenteringthehouse,thecustomerwouldseethePacificOceanthroughthewindows,andthenthepoolthroughanopenstairwayleadingtothelowerlevel.Theinstantviewofwateronbothlevelshelpedsellthese$10millionhouses.1、Whydostoresusuallydisplayfruitsandvegetablesinthefirstsection?A．Tosavecustomerstime. B．Toshowtheyarehighqualityfoods.C．Tohelpselljunkfood. D．Tosellthematdiscountprices.2、AccordingtoParagraph3,whichofthefollowingencouragescustomerstobuy?A．Openingthestoreearlyinthemorning. B．DisplayingBritishwinesnexttoFrenchones.C．Invitingcustomerstoplaymusic. D．Fillingthestorewiththesmelloffreshbread.3、WhatistheCaliforniabuilder’sstoryintendedtoprove?A．Thehousestructureisakeyfactorcustomersconsider.B．Themorecostlythehouseis,thebetteritsells.C．Anoceanviewismuchtothecustomers’taste.D．Agoodfirstimpressionincreasessales.4、Whatisthemainpurposeofthepassage?A．Toexplainhowbusinessesturnpeopleintotheircustomers.B．Tointroducehowbusinesseshavegrownfromthepast.C．Toreportresearchesoncustomerbehavior.D．Toshowdishonestbusinesspractices.22．（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．anythingtheflightstafftellyoutodoB．generalsafetyadviceC．walkingaroundtheplaneD．pouringhotdrinks3、WhichofthefollowingisNOTtrue?A．largerplaneshavemoresafetychecksandaresaferinanaccident.B．Take-offsaresaferonnon-stopflightsthanlanding.C．Everyaircraftisdifferent,sothesafetyproceduresmaybedifferent.D．Seatbeltsshouldbeworntoprotectagainstsuddenchange.4、Thebesttitleshouldbe.A．ThesafestwaytotravelB．AirsafetytipsC．Non-stopRoutesD．Howtotakeaplane23．（8分）Asafirstresponder,youneverknowwhattypeofsituationyoumightwalkinto,orwhoyou’llmeetalongtheway.That’sdefinitelybeenthecaseforJeffreyLanenberg,a51-year-oldparamedic(急救醫務人員)since1984.Tenyearsintothejob,Lanenbergreceivedacallthatreportedthatamaninhisearly30shadfallendownintheMallofAmerica.WhenLanenbergandhispartnerarrivedatthescene,theyfoundtheyoungmalefacedownontheground.Hehadgoneunconscious,makingweakattemptstobreathe.Hiswifestoodbesidehimholdingtheirsmallsoninhorror.Theyquicklyrushedtodefibrillate(除顫)andcalmthemantokeephimundercontrol.AfterLanenbergdroppedthepatientoffattheneighboringhospital,hethoughtaboutthemanandhisfamilyforalongtime.LanenbergthoughthehadexperiencedeverythingunderthesununtilonerandomvisittoOfficeMaxthreeyearsago,wherehemetamanrepeatedlywalkbackandforthwhilestaringathim.Asitturnedout,themanwasthepatienthehadsaved20yearsearlier.＂Yougaveme20yearsmorethanIeverthoughtI’dhave,＂themansaid.HethankedLanenbergrepeatedlyandtoldhimhehadsomeonehewantedhimtomeet.Hesteppedaroundthecornerandreappearedwitha20-something-year-oldman.Lanenberginstantlyknewthatitwasthesonhehadseenstandingbyhismotherallthoseyearsago.＂Thatdaychangedmylife,＂Lanenbergsaid.＂Beforethat,everythingwasaboutwork…WhenItalktomybeginner-trainingclass,Itellthemyouneverknowtheimpactyoucanhaveonsomeone’slife.＂1、WhatdidLanenbergdowiththeyoungman?A．Hegavethemanthefirstaid. B．Hecuredthemanatthescene.C．Heonlysentthemantohospital. D．Hetookcareoftheman’swifeandson.2、WhatdidLanenbergthinkoftheencounterwiththeman?A．Itwasunbelievable. B．Itwasacommonroutine.C．Itwasamatterofcourse. D．Itwasadangeroussituation.3、WhywasthemanthankfultoLanenberg?A．Lanenberghelpedbringuphislittleson.B．Lanenbergdonatedtosupporthisfamily.C．Lanenberggavehimthepresenthappylife.D．Lanenbergtaughthissontobeanewdoctor.4、HowdidthemeetingchangeLanenberg’slife?A．Hechangedhisattitudetohisjob.B．Hewasrewardedwithmuchmoney.C．Hegotapromotiontobeateamleader.D．Hetookupteachingworktotrainnewcomers.24．（8分）FestivalsinWalesthisspringThere’slotstosee,doandexperienceinWalesthisspring.Andnowit’stimetoembraceallthingsnewandgetreadytobeentertainedinthespring,comerainorshine.Wrexham,10-12MayTheannualfestivalshowcasesover200actsconsistingofmusic,comedy,filmandmore.Sinceitsopeningeventin2011,FocusWaleshasdonealotforemerging（新興的）musiciansacrossthecountry,and2018seesWelshMusicPrizewinnerTheGentleGoodandYSelarBestBandwinners.Candelas,takethestage.?Aberystwyth,19-29MayWhetheryoupreferHillClimbsorSportives,theAberCycleFestivalallowsyoutotakeallofitinfromthesaddle（鞍）ofabike,enjoyingtheworld’smostbeautifulscenery.However,allworkandnoplaymakesusalldullboysandgirls,sowhileyou’reintownbesuretopopintooneortwooftheplentyofpubsinAber（asthelocalscallit）foranice,coldpintofBrainsbeer.You’llneeditafterallthatcycling!HayonWye,25-28MayTheworld’sbiggestmusicandphilosophyfestivalreturnsin2018withitsuniquemixoftunes,talksandtrapeze（吊杠）（yes,thereareevencircusperformers!）BasedinthemagicalsurroundingsofHayonWye,thisfourdayfestivaltakesplaceattheendofMayandisperfectforeveryonewholikesasideofintellectualism（理智主義）withtheirtraditionalfestivalexperience.Lawrenny,25-28MayInlateMayintheheartofthePembrokeshireNationalPark,theBigRetreatWalestakesplace.Essentiallythefestivalisaboutwellness,butit’salsosomuchmorethanthat.JoininthisMayforfourdaysof“fedgood”,leavingyourusualroutinebehindanddivingintoadelightfulmixofworkshops,activities,musicandsustainablefoodproduce.1、ThefestivalsinWalesareheldannually.A．inearlyMayB．insideandoutsideofWalesC．inrainyorsunnyweatherD．forlocalsonly2、WhatisspecialaboutAberystwyth,19-29May?A．Youcanfindaplacetorelaxaftertheactivity.B．Youcanmeetyourfavoritebandwinners.C．Ithasanatmosphereofnaturalbeautyandtradition.D．Itdoesn’tlastlongenough.3、Janeisanofficeworkerandfitnessenthusiastandwantstoexperiencesomethingunusual.Whichfestivaldoyousuggestshegoto?A．Wrexham,10-12MayB．Aberystwyth,19-29MayC．HayonWye,25-28MayD．Lawrenny,25-28May25．（10分）Imaginebeinggiventheopportunitytowakeuptolions,eatyourmealswithmonkeys,andevenshareyourbathwithbears,allfromthecomfortofauniquenewlodgingexperience.TheJamalaWildlifeLodgeopeneditsdoorsinJanuary2015,whichwassetupinanefforttoeducatevisitorsaboutaidingthesurvivalofmanyoftheworld'sendangeredspecies.“It'sgreatfortheanimals;they'regoingtogetmorespace.It'sgreatfortheviewingpublic;they'regoingtogetmorethingstosee.Itwillbegreatfortourismandjustforthelocalcommunity，”saidRichardTindale,theownerandoperator.SpreadingacrossthreelocationsintheNationalZoo,the18rooms,whichrangefromgiraffetreehousestojunglebungalows,offerafantasticexperiencewithwildlife.TheGiraffeTreehouseTheGiraffeTreehouseissetamongthegiraffeenclosures(圍場),andtheJungleBungalowsareluxuriousindividualsuiteswhicharenexttoeitherlion,cheetah(獵豹),brownbear,orMalaysiansunbearenclosures.TheUshakaHouseHousingupto26people,theUshakaHouseisbuiltaroundthemonkeyenclosureandhasabuiltinaquariumwhichoffersprivateviewsofsomeofthezoo'ssharks.TheBurleyGriffinHouseOnlymetersfromtheedgeofLakeBurleyGriffin,theindoorandoutdoorentertainingareashavesplendidviewsacrossthelaketoBlackMountain.TheSharkHouseTheSharkHousehasitsownlittlejetty(碼頭)anditcomesoutoverthesharktankhereandsothepeoplewhostayintheroomwillbeabletogototheirbedroomandpattheshark.LocationLocatedintheheartofAustralia'spoliticalcapital,theJamalaWildlifeLodgeattheNationalZooandAquariumisjusttenminutesfromCanberra'scentralBusinessDistrict.1、WhichofthefollowingisTRUEabouttheJamalaWildlifeLodge?A．TheJamalaWildlifeLodgeliesintheheartofCanberra.B．TheJamalaWildlifeLodgehasaverylonghistory.C．TheJamalaWildlifeLodgeisoutsidetheNationalZoo.D．TheJamalaWildlifeLodgehasaltogether26houses.2、IfatouristwantstovisitLakeBurleyGriffin,he'dbetterchoose________.A．TheGiraffeTreehouse B．TheUshakaHouseC．TheBurleyGriffinHouse D．TheSharkHouse3、Thepurposeofwritingthepassageisto________.A．attractmoretouriststovisittheNationalZooB．introducetheJamalaWildlifeLodgeinAustraliaC．raisepeople'sawarenessofprotectinganimalsD．offervisitorsanopportunitytoplaywithsharks第三部分語言知識運用（共兩節）第一節（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）完形填空（共20小題；每小題1分，滿分20分）閱讀下面短文，從短文后各題所給的四個選項（A、B、C和D）中，可以填入空白處的最佳選項,并在答題卡上將該項涂黑。Althoughmyfatherwasn'tadoctor,hemadehisownbrandof"housecalls"．Ifollowedhimashe36aplateofmymother'shomecookingtoanelderlymannamedFrank37allmajorholidays,andwhenFrankwas38．AsfarasIknow,theironly39wasthatFrankwasanoccasional40atDad'ssmallgasstation．Frank'shomewasatwo-roomhouseontheroughsideoftownwitharottenfrontporch（門廊）thatyoucouldfallthroughifyouweren't41．Throughhiscaring42,myfatherwasteachingmetobeadoctor,43neitherofusknewitatthetime． WhenIwas13,myfather44lungcancer．Hebroughthomea45thedoctordrewshowing46hiscancerwasandtoldmethathewasgoingto47． Thebiggreenoxygentankwithplastictubing48acentralfeature（特征）ofourlivingroomnexttohiseasychair．Severalmonthspassedandhiscondition49．Heaskedmeto50mymotherwhenhewasgone．Hesaid,"Iloveyou,son．"Thatnighthedied． Whenyou're13andyourfatherdies,youhavesome51tomake．Youcanusethecircumstanceasa（n）52forlettingyourbehaviorandgradesgodowndrain,oryoucanhonorhismemoryandtrytodosomething53withyourself．I54myenergyonmyschoolworkandmygoalofbecominga55．．1、A．lent B．brought C．bought D．showed2、A．for B．in C．at D．on3、A．happy B．well C．sick D．homesick4、A．function B．connection C．information D．instruction5、A．patient B．doctor C．customer D．passenger6、A．careful B．strong C．reasonable D．punctual7、A．words B．attitude C．attention D．appearance8、A．and B．because C．although D．as9、A．developed B．found C．constructed D．recovered10、A．photo B．diagram C．report D．film11、A．where B．how C．which D．what12、A．rest B．retire C．die D．leave13、A．decorated B．remained C．equipped D．became14、A．worsened B．decreased C．increased D．bettered15、A．takecareof B．makefriendswith C．makeupfor D．lookinto16、A．mistakes B．friends C．choices D．changes17、A．reason B．guide C．cause D．excuse18、A．positive B．active C．productive D．motive19、A．attracted B．consumed C．focused D．depended20、A．doctor B．driver C．teacher D．nurse第二節（每小題1.5分，滿分15分）閱讀下面材料，在空白處填入1個適當的單詞或括號內單詞的正確形式。27．（15分）Beijing,togetherwithZhangjiakou,succeededingettingthechancetohostthe2022WinterOlympicGames,whichspeedsupthedevelopmentofZhangjiakouCity.Wordcame1．theBeijing-Zhangjiakouhigh-speedrailway,locatedinNorthChina,isnow2．construction,andisexpectedtobecompletedby2020in3．(prepare)forthecitiestohostthe2022WinterOlympics.StartingfromBeijingNorthRailwayStationandheadingwestthroughtheGreatWall,theprojectis4．(probable)thebiggestchallengeever.Itsdesignerssaythattheexplosionsneeded5．(dig)thetunnelswillnothaveanegativeeffectonthestructure.Therailwaylinehasalengthof174kmasadouble-trackpassengerline,withtenstationsalongitsroute.Enjoying6．totalinvestmentof31.17billionyuan($5billion),thetripbetweenthetwocitieswillonlytake40minutes7．thetrainwilltravelatanaverageof250km/h.Accordingtotheplan,thehigh-speedrailwaywillhavetwobranch8．line)—oneistoYanqingStationandtheothertoTaizichengofChongli,wheretheOlympicVillagelies.Thefullrailway,9．(include)a70-kilometersectionthroughBeijing,10．(complete)infourandahalfyears.第四部分寫作（共兩節）第一節短文改錯（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。ItcanbeseenfromthepictureMr、Liu，whowearsamask、waswalkinghisdog、Interestingly，hisdogwhichalsowearsamask、Inrecentyear，airpollutionhasbecomemoreandmoreseriousinsomeareas，whichhaveledtosevereconsequences、Tosolvethisproblem，firstlyofall，weshouldraisethepublicawarenessofprotectingtheenvironment、Secondly，thegovernmentoughttopunishtheillegalactsaspollutingtheenvironmentsevere、Thirdly，wemustdoourbesttoprotectingtheenvironmentinourdailylife、Onlyinthiswaycanhumanbeingsandanimalsshareapleasantplanetorliveahappylife、第二節書面表達（滿分25分）29．（25分）隨著信息技術的不斷發展，傳統的靠讀報獲取信息的方式逐漸被看電視，上網所代替。對此我們學校開展了題為“ViewsonNewspaper”的假期社會調查。請你根據以下提示，給中學生英語報寫篇稿，客觀介紹你的調查情況，并簡單陳述自己的看法。45%的人喜歡讀報：（1）不受時間限制，方便；閱讀使人思考，有利于智力的提高；可以隨個人興趣獲取信息。55%的人不喜歡讀報：（1）沒有聲像，不夠生動；信息傳遞速度相對較慢。注：文章的開頭已給出。詞數不少于100。Deareditor,Recentlystudentsofourschoolhavemadeasurveyof“ViewsonNewspaper”._____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

參考答案第一部分（共20小題，每小題1.5分，滿分30分）1、D2、B3、B4、C5、D6、B7、A8、D9、A10、A11、B12、C13、A14、B15、B16、D17、C18、D19、D20、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、C2、D3、D4、A22、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,scientistshaveinventedseveralwaysforclearingthesky.Groundstationshavebeen