江西省新余市两重点校高三第三次测评新高考英语试卷及答案解析

江西省新余市两重点校高三第三次测评新高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．ThankstoMr.Smith,thefatherandthesoneventually________aftertenyears'coldrelationshipbetweenthem.A．tookup B．madeupC．lookedup D．turnedup2．—Jenny,howwasyourtriptoBeijing?—Oh,Imissedit.IwishI________myvacationthere.A．amspendingB．willspendC．havespentD．hadspent3．Tomisproudand________,neveradmittingheiswrongandalwayslookingforsomeoneelsetoblame.A．strict B．stubbornC．sympathetic D．sensitive4．Thenationalparkhasalargecollectionofwildlife,________frombutterfliestoelephants.A．torange B．rangeC．ranging D．ranged5．Onthesurfaceofthewater________,whichspoiledthebeautifulsceneryofthepark.A．somedeadleavesdidfloat B．somedeadleavesfloatedC．floatedsomedeadleaves D．didsomedeadleavesfloat6．Whatactually______theaccidenthasnotyetbeendetermined.A．broughtout B．broughton C．broughtabout D．broughtup7．Rightnow,lotsofpeoplesearchforproductsontheInternetbutstillbuythematstores.Internetshoppingwillreally____whenpeoplearesurethatitissafe.A．setup B．setoff C．takeoff D．takeup8．I______tellyouwithcertaintythathewon’tbeabletofinishitbeforethedeadline.A．willB．mustC．canD．may9．．Sheisfedupwithsharingahousewithothers;,sheislookingforherownflat.A．moreover B．otherwise C．however D．therefore10．Althoughtheusedcarseemsingood______,itcannotrunfast.A．state B．situationC．condition D．occasion11．Whenshewasintrouble,IdidwhatIcouldtohelpher．__________myhelp,shewrotemealetterofthanks．A．Inhonorof B．Incaseof C．Intermsof D．Inreturnfor12．AmericansingerTaylorSwift,21,________bigatthe2011AcademyofCountryMusicAwardsintheUSonApril3rd.A．stood B．gave C．scored D．made13．WhentheadmissionletterfromHarvardUniversityarrived,Ben'sparentswereandthrewabigparty.A．intheredB．tickledpinkC．aswhiteasasheetD．inabluemood14．Newly________chairmanoftheChineseBasketballAssociation,YaoMinghasputreformingthedomesticgame’smanagementatthetopofhisagenda.A．appointing B．appointedC．beingappointed D．havingappointed15．The90’speopleseemtohaveenjoyedthegreatbenefits________aboutbythegreatlevelofculturalandeconomicdevelopment.A．broughtB．bringingC．tobebroughtD．havingbrought16．Yourletterwillgetattention!Theyknowyou’reexpectingtheanswer.A．careful B．common C．instant D．general17．Thesuccessof“onecountry,twosystems”inpracticehasbeenuniversally________,andthispolicycontinuestogostrong.A．acknowledgedB．appreciatedC．accomplishedD．accompanied18．Theboyishavingafever.You’dbetterdampatowelandlayit______hisforehead.A．acrossB．withinC．throughD．beyond19．Hissisterlefthomein1998,and_________________since.A．hadnotbeenheardof B．hasnotbeenheardofC．hadnotheardof D．hasnotheardof20．--Sorryforhavingkeptyouwaiting.Butforthetrafficjam，I________________20minutesearlier—Nevermind，Ihaven'tbeenwaitingthatlong.A．arrived B．wouldhavearrivedC．wouldarrive D．hadarrived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）"Joe?Isthatyou?"Thewomanspeakingtomeatthebaseballgamelookedalittlefamiliar."Marci?"Iasked."ItISyou!"shecriedout,smilingbroadly."Gosh,it'sgoodtoseeyouagain!"ItwasgoodtoseeMarci,too.Offandonduringthepastfewdecades,I'vewonderedabouther.Ialmosttriedtosearchforherafewyearsagoaftertalkingtoafriendwhohadindicatedthatthe1990shadbeenprettyroughforMarci.Someetingheratthebaseballgamewasreallyoutofexpectation.Wespentafewminutestalkingaboutourlives—thegoodold,badolddays.ThenMarcigrewquietforamoment.“Youknow,Joe,”shesaid,“I’vealwayswantedtotellyou…how…howsorryIamforthewayItreatedyou.Youmusthavebeenhurtbothphysicallyandmentally.”Iwasalittleembarrassed.Iturnedandlookedather.“It’sOK,”Isaid,“Nobigdeal!”“ButIwassuchajerk.”shecontinued.Yesyouwere,Ithought.“Wewerebothprettyyoung,”Ismiled.“Iknow.”shesaid,“It’sjustalwaysbotheredme,rememberinghowmeanIwastoyou.AndI’vewantedtotellyouthatI’msorry.”Theexpressiononherfacewaswarmandsincere.Andtherewassomethinginhereyes—itlookedalotlikerelief.“OK,”Isaid."Apologyaccepted!”Overcomebythesweetnessofthemoment,Ireachedanarmaroundherandgaveheraquickhug.Justthen,thecrowderuptedwithahugecheer,andMarciandIbothreturnedourattentiontothegame.BythetimeIlookedovertowhereshehadbeen,shewasgone.Butthewarm,wonderfulfeelingofourbriefexchangewasstillthere,andcontinuestothisdaywheneverIthinkaboutit.Itisn'tenoughtojustsay“I’msorry”and"You'reforgiven."Butwhenthosewordsaretrulyfeltandsincerelyexpressed,theycanopenthedoortomiraclesoftheheart.Forgivenesscanbringpeacetoaninjuredsoul—evenyearsafterthefact.Evenatabaseballgame.1、WhatkindoflifedidMarciliveduringthelate20thcenturyaccordingtothepassage?A．Happy.B．Busy.C．Hard.D．Simple.2、Whatdoestheunderlinedword“jerk”inthethirdparagraphmean?A．Ahumorousperson.B．Acruelperson.C．Acarelessperson.D．Anhonestperson.3、WhydidMarcilookinreliefaftertalkingwiththeauthor?A．Becauseherfavoriteteamwonthegame.B．BecauseshelearnedJoewaslivingagoodlife.C．Becauseshemadeanapologytotheauthor.D．Becauseshefoundshewasnotmeananylonger.4、Whatmightbethebesttitleforthepassage?A．ExcitementofABaseballGameB．MentalBurdenofAWomanC．MiraclesofForgivenessD．ReliefofFindingAfriend22．（8分）EssentialsofNutrition---GoodnutritionVSmalnutrition(营养不良)Author:JoelBresslerPrice:$29.99EssentialsofNutritiontouchesimportanthealthtopicssuchas:thepositiveandnegativeaspectsofnutrition;theimportanceofexercise;thenecessityofvitamins,minerals,andwater.Italsoadviseshowdoctorsandeducatorswillimproveourhealthinthefuture.PreservetheBestandConservetheRest---Memoirs(回忆录)ofaUSForestServiceWildlifeBiologistAuthor:HadleyB．RobertsPrice:$19.99PreservetheBestandConservetheRestcoversUSForestServicewildlifebiologistHadleyB．Roberts’half-centurycareerinwildlifeandfishhabitatconservationandpreservation.Itincludeshisaccomplishment,motivesandinfluencesbehindhisactions.Poodle(贵宾犬)Mistress---TheAutobiographicalStoryofLifewithNineToyPoodleAuthor:SandiLatimerPrice:$22.99PoodleMistressisastoryofunconditionalloveanddevotionaboutninedogsthatchangedauthorSandiLatimer’slife.Hermemoir(回忆录)detailsatwenty-seven-yearjourneyassheandherhusbandcaredforandenjoyedthefunnybehaviorsoftheirtoypoodles.AProfessorandCEOTrueStory---AFascinatingJourneytoSuccessAuthor:RichardT.ChengPrice:$13.95InAProfessorandCEOTrueStory,RichardTChengshareshowheovercamegreatoddsandtransformedfromastrugglingimmigranttomillion-dollarCEOandesteemedprofessor.Thisisapowerfulandinspiringstoryofsuccessandsurvival.1、Whichbookisaboutwildlifeprotection?A．PreservetheBestandConservetheRest.B．EssentialsofNutrition.C．PoodleMistress.D．AProfessorandCEOTrueStory.2、WhoprobablyenjoysreadingPoodleMistress?A．Thosewhoarelookingforsuccess.B．Thosewhofightforanimalrights.C．Thosewhoareinterestedinnaturalworld.D．Thosewhoarepetlovers.3、Whatisthecheapestbookmainlyabout?A．Astoryoflifewithpoodles.B．Importanthealthtopics.C．Aninspiringjourneytosuccess.D．Memoirsofawildlifebiologist.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）Littleblacktaxis,oftenrun-downandfallingapartfromdecadesofuse,haveforalongtimebeenamainfeatureofCairo’schaoticurbanlandscape.Buttheirdaysmaybenumbered,thankstoanewtaxireplacementprogrammeaimedatknockingoutolder,potentiallyunsafevehicles.Thegovernment-sponsoredaction,launchedearlierthisyear,allowsdriversoftaxis20yearsorolder,mostlyFiatsandPeugeots,totradetheircarsforshinynewall-whiteonesatgenerousratesoffinancing.Driverscanchoosebetweenfivedifferentlocallymanufacturedcarmodels.Accordingtoofficials,morethan11,000brandnewtaxis,sportingtrademarkcheckedstripesonthesides,havealreadyhitthestreetsofthecapital,andthey’vebeenwelcomedenthusiasticallybypassengers.Manypeoplesaythatnotonlyarethenewtaxismorecomfortable,buttheyalsomakethestreetsofCairofarmorepresentable.Furthermore,taxifareshaveonlyincreasedbyasmallamount.Thepoorconditionofmostblackandwhitetaxisisalmostlegendary.Passengersoftenhavetodealwithwindowsanddoorsthatdonotopenandclose,andheavy,thickpetrolgases.Airconditioningisunheardof.Thenewall-whitetaxis,meanwhile,arecleaner,morefuel-efficientandprovideairconditioningonrequest.Furthermore,allthenewtaxiscomeequippedwithfunctioningfaremeters,whichavoidsargumentsandsometimesfightswithpassengers!Thegovernmenthopestoreplaceallofthecapital’s40,000elderlyblackcabssoon,butnoteveryoneinCairowillbehappytoseethemgo.HotelmanagerIbrahimAl-Toukhysaysthattheoldblackcabswereweakandrun-down,andmaybeevenalittledangerous,buttheywerepartofthecity,andpartofCairo’scharacter.1、Whichofthefollowingscanreplacetheunderlinedword“chaotic”inparagraph1?A．disorderly B．fantastic C．busy D．silent2、WhichofthefollowingstatementsisTRUEaboutthenewtaxis?A．Theyaremuchmorepresentable.B．Theirpassengershavetopaydramaticallymore.C．Theyaremuchmoreenergy-saving.D．Onlyfewofthemprovideairconditioning.3、Whatdoesthepassagemainlytalkabout?A．TheroadtrafficconditionofCairo.B．AtaxirenewalprogrammelaunchedinCairo.C．TheproblemswitholdblackCairotaxis.D．VariousviewsonthenewtaxireplacementinCairo.25．（10分）Englandcontinuestobeoneofthemostpopulartouristdestinationsintheworld.Londoninparticularisoneofthemostvisitedcitiesanddrawspeopleinwithitsappeal,history,andpubs.England’ssmallercities,likeBathandOxford,areequallyasattractivewithalotofcultureandfewercrowds.Liverpool,birthplaceofTheBeatles,hasarichmusicalhistory.Thecountrysidehaswonderfulnaturalbeauty.HerearesometipsontravelinginEngland.Freemuseums—PublicmuseumsofferfreeadmissionineverycitythroughoutEnglandandtheUK.It’sagreatwaytolearnaboutthecountry’smostinfluentialartistsandhistory,andspendarainydaywithoutpayingacent.Bookearly—Bookalltransportationwellinadvance,evenifyoudon’tplantouseit.Farescanbearound￡2withalittleplanning.TheMegabusnotonlyrunsbusesbutalsoprovidestrainsthroughoutEnglandandisthebestchoiceforcheaptravelthroughoutthecountry.Pubfood—EatinginEnglandcanbequiteexpensive,butforgoodcheapandfillingmeals,visitthelocalpubs,whereyoucangetagoodmealforlessthan￡10.Besides,thepubsareagreatwaytomeetpeople!GetaTasteofUKcard—TheTasteoftheUKcardoffersupto50%offatselectedrestaurants.Youdon’tneedtobeanEnglishtogetthecard,andyouneedn’tpaythefirstmonth’smembershipfee,whichisperfectformosttravelers.Takeafreewalkingtour—ManymajorcitiesinEnglandofferfreewalkingtours.Theyusuallylastafewhoursandareagreatwaytoseethecity.1、ComparedwithLondon,Oxfordis.A．moreappealingB．lesscrowdedC．largerinsizeD．richerinhistory2、Whyiseatinginlocalpubssuggested?A．Thepriceoffoodislowthere.B．Thechanceofmeetingstarsishighthere.C．Theserviceisexcellentthere.D．Thediningatmosphereisperfectthere.3、Whatcanbeknownfromthetext?A．AllmuseumsintheUKarefreeofcharge.B．ThebestwaytotravelaroundEnglandisbybus.C．FreewalkingtoursareavailableinonlysomecitiesinEngland.D．HoldersoftheTasteofUKcardcanenjoydiscountsatallrestaurants.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）About30yearsago,IleftCubafortheUnitedStateswithmy4-year-oldson.Aftergetting1finallyinBrunswick,NewJersey,Ienrolled（注册）mysonin2Severalweekslater,myson’steacheraskedmetomeethimathis3.Intheteacher’soffice,anexchangeof4wasfollowedbyhisquestions:“Isyoursonmentallyretarded（弱智的）,Doeshesufferfromanykindof5disability?”WashetalkingaboutmywonderfulScola?No,noitcan’tbe.Whata6.lonelymoment!ItoldhimthatScolawasaquiet,sweetlittleboy,instead.Iaskedhimwhyhewasaskingmeallthesequestions.Mysoncouldnot7theteacher’sdirections,hetoldme,and8.Scolawasdisruptingtheclass.Didn’theknowmysondidnotspeakEnglishyet?Hewas9;“Whyhasn’tyoursonbeentaughttospeakEnglish?Don’tyouspeakEnglishathome?”No,Ididn’tspeakEnglishathome,I10,IwassuremysonwouldlearnEnglishinacoupleofmonths,andIdidn’twanthimtoforgethis11language.Well,wronganswer!WhatkindofpersonwouldnotspeakinEnglishtohersonathomeandatalltime?“Areyouoneofthosepeoplewhocometothiscountrytosavedollarsandsendthembacktotheircountry,12wantingtobeapartofthissociety?”13,ItriedtotellhimIwasnotoneof“thosepeople”.Thenhetoldmethe14wasover,andIleft.AsIhad15,mysonlearnedtospeakEnglish16beforetheschoolyearwasover.Hewentontograduatefromcollegeandgota17,earningclosetosixfigures.Hetravelswidelyandleadsawell-adjusted,contentedlife.Andhehas18frombeingbilingual（双语的）.Speakingmorethanonelanguageallowspeopleto19withothers;itteachespeopleaboutother20andotherplacessomethingverybasicandobviouslylackinginthe“educator”ImetinNewJersey.1、A．solvedB．settledC．situatedD．involved2、A．schoolB．companyC．communityD．kindergarten3、A．officeB．homeC．houseD．workshop4、A．questionsB．greetingsC．informationD．requests5、A．physicalB．emotionalC．educationalD．mental6、A．carelessB．helplessC．uselessD．worthless7、A．hearB．repeatC．followD．explain8、A．thusB．howeverC．otherwiseD．though9、A．angryB．calmC．surprisedD．sad10、A．refusedB．repliedC．remindedD．rewarded11、A．spokenB．writtenC．secondD．native12、A．oftenB．neverC．seldomD．once13、A．NeedlesstosayB．BeyondwordsC．FornoreasonD．Tomakemattersworse14、A．instructionB．blameC．meetingD．discussion15、A．plannedB．notedC．suggestedD．expected16、A．easilyB．fluentlyC．hardlyD．exactly17、A．jobB．degreeC．chanceD．scholarship18、A．sufferedB．benefitedC．learnedD．grown19、A．dealB．stayC．communicateD．match20、A．languagesB．customsC．traditionsD．cultures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）Astudyshowsthatnewtechnologyisreducingchildren’sability（小题1）(use)apencilorpen.ThestudyisfromtheNationalHealthServiceintheUK.Researcherssaidthatnowadays,childrenspendsomuchtimeswipingiPadsormobilephonescreens（小题2）theycannotholdapencilproperly.Childrenarenotusing（小题3）(pencil),sotheynowlackthemuscle（小题4）(strong)intheirhandstobeabletowrite（小题5）(proper).ResearcherDrSallyPaynesaid:“Childrenarenotcomingintoschoolwiththestronghandandtheabilitythey（小题6）(have)10yearsago.Children（小题7）(come)intoschoolarebeinggivenapencilbutareincreasinglynotabletoholditbecausetheydon’thavethefundamental(基本的)movementskills.”Theresearcherssaidtechnologyischangingthephysicalwaythatchildrenwrite,drawormakethings.DrPayneexplainedwhy.Shesaid:“It’s（小题8）(easy)togiveachildaniPadthanencouragethemtodomuscle-buildingplaysuchasbuildingblocks,cuttingandsticking,orpullingtoysandropes.Oneexpertsaid（小题9）achildisn’tstrongenoughtoholdapencil,perhapstheirwholebodyisweak.Shesaiditwasbetterforchildren’sphysicaldevelopmenttoclimbtrees（小题10）towatchYouTubevideos.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。JohnSnow—adoctor,whoattendedQueenVictoriaasherpersonalphysician、Buthewaswillingtohelpordinarypeopleexposedincholera、Manypeoplediedeverytimetherewasaoutbreak、Hewantedtofacethechallengeandsolvetheproblem、Notheoriescaughtherattention、Thefirstsuggestedthatcholeramultipliedintheair、Thesecondsuggestedthatpeopleabsorbedthisdiseaseintotheirbodiesandthediseaseattackedthebody、JohnSnowbelievedthesecondwasrightbutheneededevidences、WhenanotheroutbreakhitLondonin1854,hewasreadytobeginhisenquiryandtriedtogetmoreinformation、Hefoundthatmostofthedeathswasnearawaterpumpandthespreadofthediseasewaswithwater、Withtheinformation,hewasabletoconcludethatpollutingwatercarriedthevirus、Afterthat,hesuggestedthesourceofallthewatersupplieswasexamined、Finally"KingCholera"defeated、第二节书面表达（满分25分）29．（25分）假如你叫李华，你所生活的城市周围有很多动植物正逐渐减少，对此你向有关部门写一封信，分析造成这种现象的原因，并根据实际情况提出切实可行的几条建议。但以下几条要点要包括在内：1.野生动植物的现状；2.分析造成许多野生动植物濒临灭绝的原因；3.提出几条保护野生动植物的具体措施。注意：1.词数100左右；2.不可遗漏要点，可适当增加细节；3.书写要干净、工整；4.开头和结尾已给出，不计入总词数。DearSirorMadam,I’mwritingtogivesomesuggestionstoprotectthewildlifelivinginandaroundourcity.______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Yourssincerely,LiHua

参考答案第一部分（共20小题，每小题1.5分，满分30分）1、B2、D3、B4、C5、C6、C7、C8、C9、D10、C11、D12、C13、B14、B15、A16、C17、A18、A19、B20、B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、C2、B3、C4、C22、1、A2、D3、C23、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,scientistshaveinventedseveralwaysforclearingthesky.Groundstationshavebeenbuilttomonitorlargerpiecesofspacetrashtopreventthemfromcrash