黑龙江省哈尔滨市南岗区三中2025届高考临考冲刺英语试卷含解析

黑龙江省哈尔滨市南岗区三中2025届高考临考冲刺英语试卷注意事项1．考试结束后，请将本试卷和答题卡一并交回．2．答题前，请务必将自己的姓名、准考证号用0．5毫米黑色墨水的签字笔填写在试卷及答题卡的规定位置．3．请认真核对监考员在答题卡上所粘贴的条形码上的姓名、准考证号与本人是否相符．4．作答选择题，必须用2B铅笔将答题卡上对应选项的方框涂满、涂黑；如需改动，请用橡皮擦干净后，再选涂其他答案．作答非选择题，必须用05毫米黑色墨水的签字笔在答题卡上的指定位置作答，在其他位置作答一律无效．5．如需作图，须用2B铅笔绘、写清楚，线条、符号等须加黑、加粗．第一部分（共20小题，每小题1.5分，满分30分）1．Itreallymatters_______hetreatedthelatestfailure,fortheexaminationisaroundthecorner.A．if B．thatC．why D．how2．Varietiesofsolutionshavebeenprovidedforustosolvetheproblem.Wecanchoose________tostartwith.A．it B．that C．each D．one3．—Don’tmakeaspecialjourneytopickupthelaundryforme.—It’sOK.I________totheshopanyway.A．wasgoingB．willhavegoneC．havegoneD．willbegoing4．Hewouldbeinbetterhealthnow_______withtoomuchworkwhenyoung.A．hadhenotburdenedhimself B．ifhewasnotburdenedC．werehenotburdened D．hadhenotbeenburdenedhimself5．Muchtomy______,myvocabularyhasexpandedagreatdeal.A．delighting B．delighted C．delight6．Oncepublished,thenovelwasa(n)successandwassoontranslatedintonineforeignlanguages.A．occasionalB．instantC．constantD．individual7．Asyoucansee,thenumberofcarsonourroads________risingthesedays.A．waskeeping B．keepC．keeps D．werekeeping8．Thebusdroppedmeoffandpulledaway_____IrealizedIhadleftmybagonit.A．whileB．beforeC．afterD．since9．Tomhasfailedagaininthemathexam.Iamreallyletdown.______Hehasalreadydonehisbest. A．Don’tpushhim. B．Nokidding. C．Heshouldbetoblame. D．Nowonder.10．Thereisnodoubtthatclimateallovertheworld______greatlyinrecentyears.A．hadchanged B．ischangingC．changed D．hasbeenchanging11．—Vivien,youlookblue.What’swrong?—Therearesomanypapers_____.I’mreallybusyrecently.A．finishB．tofinishC．finishingD．finished12．Theredsandgolds_____intoeachotherasthesunsank.Whatabeautifulsight!A．bumped B．pressedC．melted D．turned13．Webelieve________youhavebeendevotedto________naturallyofgreatnecessity.A．that;being B．allthat;beC．thatall;are D．what;is14．Simplyraiseyourhand，andataxiappears________A．atnotimeB．atonetimeC．innotimeD．forthetimebeing15．Whathelikedtodowastotakeanideaand______itbyfindingeverypossibleconsequence.A．squeeze B．wrestleC．switch D．shrink16．IwishI______photographythen.Ifso,Icouldgiveyouahandatpresent.A．studied B．hadstudiedC．havestudied D．willstudy17．—Congratulations！Ihearyou’vewonthefirstprizeinthesingingcompetition．—You_____bemistaken．I’minthedanceclass．A．must B．may C．should D．could18．Wehavealreadydiscussedthisplan_____,sonextweshouldsparenoefforttocarryitout.A．atlength B．atrandom C．atease D．atbest19．It’s_______forpeopletoblametrafficjams,thecostofgasandthegreatspeedofmodernlife.A．reasonable B．availableC．accurate D．cautious20．WhenIwastwenty,Ihadto________beforegraduationandworkinaclothesshoptohelpsupportmyfamily.A．comeout B．stayoutC．leaveout D．dropout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）Theclearingofmyparents’homehasmademethinkabouttheimportance,evencentralityofbookstothehouse’slifeandsoul.Thehouse,andourlivesinit,wouldnothavebeenthesamewithoutbooks.TheforceofthestatementcomeshometomeasIseewhathappenswhenshelvesareemptied.Theroomssuddenlylookuncomfortablybare.Ialwaysrathertookitforgrantedthatbooksfurnishedaroom.Theonlyroomsinourhousewithoutbookswerethedining-roomandthebathrooms.Otherwisetherewerebookseverywhere:inallthebedrooms,inthedrawing-roomandinthepianoroomwhichbecamemyparents’comfortablewinterstudy.Icouldn’thelpfeelingthatbookswereratherlikepeople:somemoreformalandboring,othersmoreentertaining;somesimplyforshow,otherswithunpromisingoutsidesbutrichinteriors.Theydidmore,infact,thanfurnisharoom;theywerecompanionswhocouldofferinsights,goodadvice.Nowthebooksarebeingcontributed(notall,tobesure,butverymany),andIfearfortheirfuture,almostasiftheywererefugees(难民).“Habentsuafatalibelli”,goesastheoldLatinsaying,originallywrittenbyTerentianus;itmeantthatthefateandfutureofbooksweredeterminedbythecapabilityofthereader.Butthemeaningofthephrasehasbeenmisunderstoodbytimeandisnowassociatedwiththephysicalfateofparticularbooks,howtheyhavepassedfromownertoowner.ThisishowWalterBenjaminreadthesayingwhenhewrotehisessay“UnpackingMyLibrary”,whichanalysestheextraordinarilycloserelationshipbetweenacollectorandhisorherbooks.WhenIdealwiththebooksthatmanyaregoingtocharityshops,Ihopetheywillfindgoodhomes,Ican’thelpwonderingifmygenerationisthelastthatwilloverseesuchaprocess.Booksaredisappearing,asmoreandmoreareboughtinelectronicformandexistonlyasbytesofinformationone-booksorotherdevices.Doesthismatter?Couldbooksbecomemorespiritual,astheylosetheirphysicality?1、Whenclearingtheroom,theauthor________.A．realizedtheinfluenceofbooksonhispastlifeB．thoughtofthestatementhisparentsoncemadeC．feltupsettoleavehisparents’booksbehindD．foundsomeemptyshelvesleftbyhisparents2、Theunderlinedword“interiors”inParagraph3refersto________.A．pagesB．notesC．coversD．contents3、AccordingtoWalterBenjamin,________.A．it’simportanttopassbooksfromoneownertoanotherB．themeaningofbooksismisunderstoodbytimeC．thefateofbooksisrelatedtotheircollectorsD．thefutureofbooksdependsonreaders’capability4、Fromthepassageweknowthat________.A．theauthorisattachedtophysicalformofbooksB．theauthor’sbooksareboundtofindgoodhomesC．E-bookshavetakentheplaceoftraditionalonesD．theauthor’sparentsusedeveryroomoftheirsasastudy22．（8分）DNAanalysishasrevealedfamilyrelationshipsbetweenmorethan10generationsofStoneAgepeopleatmegalithic(巨石的)tombsinIrelandandSweden.Theevidencesuggeststhatmegaliths,prehistoriclargestonestructures,sometimesactedasgravesforfamilygroupsinnorthwesternEuropethousandsofyearsago.Thelatestfindingsthrownewlightontheoriginsandsocialstructureofthegroupsthatbuiltmegalithsinthisregion—ahistorythathaslongbeenhiddeninmystery.Fortheirstudy,theinternationalteamofresearchersanalyzedthegenomes—thecompletesetofgeneticmaterialinacell—of24StoneAgeindividualsfromfivemegalithicburialsitesinIreland,ScotlandandGotland,alargeSwedishislandintheBalticSea.Thisanalysisshowedthatmanyoftheindividualsburiedateachmegalith,whoalllivedbetween3,800B．C．and2,600B．C．,accordingtoradiocarbon-datingoftheirremains,werecloselyrelatedviafamilyties.TheresultsalsoshowedthattheindividualsburiedatthemegalithswererelatedtoNeolithicfarmersinnorthernandwesternEuropebutgeneticallydistinctfromotherhunter-gatherers.ThiswasparticularlynoticeableattheAnsarvesiteontheislandofGotland.“ThepeopleburiedintheAnsarvetombareremarkablydifferentonageneticlevelcomparedtotheindividualsdugoutfromhunter-gathercontexts,showingthattheburialtraditioninthismegalithictomb,whichlastedforover700years,wasperformedbydistinctgroupswithrootsintheEuropeanNeolithicexpansion,”MagdalenaFraser,co-firstauthorfromUppsalaUniversity,saidinthestatement.1、What’sthesignificanceofthenewfindings?A．ItrevealsthefamilytiesbetweenpeopleinIrelandandSweden.B．Itimpliesthatmanypeopleburiedinthetombswerecloselyrelated.C．Itindicatesthelong-hiddenmysteryconcerningDNAanalysis.D．Itsuggeststhatthemegalithsbecametombsthousandsofyearsago.2、Howdidtheresearchersreachtheirfindings?A．Byinterviewingindividuals. B．Bytravellingtodifferentregions.C．Byanalyzinggenes. D．Bystudyingtheburialsites.3、Whichistrueaccordingtothelatestfindings?A．Somepeopleburiedinthetombswererelatedtofarmers.B．Fewpeopleburiedinthetombsweregeneticallydifferent.C．Allthepeopleburiedatmegalithshadfamilyrelationships.D．PeopleburiedintheAnsarvetombweredugout700yearslater.4、What’sthemainideaofthispassage?A．Megalithsservedastombsthousandsofyearsago.B．Peopleburiedatthemegalithswererecentlyanalyzed.C．Latestfindingsshedlightonamysteryaboutburials.D．Stone-AgepeopleinIrelandandSwedenhadcloseties.23．（8分）TheannualWorldEconomicForumtookplaceinDavos,Switzerland,inJan.23-26,2018.WhatdidChineseentrepreneurs（企业家）speakintheforum?Aretheresomequotablequotesforyou?★JackMa,founderandexecutivechairmanofAlibabaGroup“Ithinkglobalizationcannotbestopped—noonecanstopglobalization,noonecanstoptrade.Iftradestops,theworldstops.Tradeisthewaytodissolve(结束)thewarnotcause

thewar,”saidMainDavos,“Google,Facebook,AmazonandAlibaba—wearetheluckiestcompaniesofthiscentury.Butwehavetheresponsibilitytohaveagoodheart,anddosomethinggood.”★RichardLiu,founderandchiefexecutiveofficerofJD“Businessisnotonlyawaytomakemoneybutalsoawaytocontributeyourself,tohelppeople,”LiusaidinaspeechinDavos.“Howcanwefacethefractured(分化的)world?That’sthetopicsoftheDavosthisyear.Ithinkaveryimportantthinginbusinessiscooperation.Ifwecanunite,worktogether,ifweworkveryclosely,Ithinkwecanbringmorehopetothepeopleandwecanbuildmoretrustbetweenthepeople,countriesandcompaniesandpartners,”hesaid.★JaneSun,CEOofCtrip“Tourismisasunriseindustry.SinceIenteredCtrip,everyyeartherearenewcomers,which,firstofall,showsthattourismisbooming.”SuntoldSinDavos.“WeinvestedheavilyinABC．AreferstoAI,Bisbigdata,andCiscloudcomputing.Aswecontinuetoexpandoverseas,thesethreewillbeverygoodweaponsforus.Sowethinkthosemeanopportunity,”shesaid.★HuXiaoming,presidentofAliyun“In2018,peoplewillseethedevelopmentinvariouscountriesmorecloselyconnectedwithcloudcomputing.Moremanufacturingenterprisesandfinancialinstitutionswillstarttouse‘cloud’,andcloudcomputingwillincreasetheefficiencyoftechnologyandfinance,”HutoldXinhuainDavos.1、WhatdoChineseentrepreneurslikeJackMaandRichardLiufocusmoreon?A．Earningmoremoney. B．Thejoinedeffortsofmankind.C．Reducingproductioncosts. D．Theroleofscienceinbusiness.2、WhatisthemainbusinessofCtrip?A．Tourism. B．ThecreationofAI.C．Computer. D．Financialserviceonline.3、WhatdoesHuthinkwillpromoteglobaleconomicdevelopment?A．Economyrecovery. B．TheWorldEconomicForum.C．Cloudcomputing. D．Financialefficiency.24．（8分）2018-03-10MotherNatureinChinesephotographer’slensForthosewhohaven’tgotthetimetotravel,thisexhibitionfeaturingnumerousphotosofthebeautyofMotherNaturewillbeadelightfortheweekend.Fromthesephotos,visitorscanseethegreatnessandpowerofnatureandthedifferencesbetweenhumansandanimals.Time:9am-5pm,throughMar19(closedonMondays)Venue:NationalArtMuseumofChina,IWusiAvenue,Dongchengdistrict.Ticket:FreeContactheBritishMuseumbringsahitshowtoBeijingTheBritishMuseum’shighly-acclaimedAHistoryoftheWorldin100Objectshasattractedmorethanonemillionvisitorsduringitsworldtour.ThatnumberisgrowingfastwithitsChinalegprovingasuccesssinceitopenedinBeijinglastweek.TheexhibitiondevelopedfromabroadcastingseriesthattheLondonmuseumstartedinpartnershipwiththeBBCin2010.Each15-minuteprogramintroducedoneof100objectsfromthemuseum’scollectionthatrevealed(展现)thecommunicationmethodsofvarioushumanculturesoverthecourseoftwomillionyears.Time:9am-5pm,throughMay31(closedonMondays)Venue:NationalMuseumofChina,16EastChang’anAvenue,Dongchengdistrict.Ticket:50yuanContacthenphotographslooklikepaintingsThelinebetweenpaintingandphotographyhasblurred(模糊)inconceptualartist(概念艺术家)FuWenjun’sworks.Fornearly30years,hehasdevotedhimselftotheexplorationofproducingphotosthatlooklikeabstractpaintingstoinspirepeopletothinkratherthansimplyappreciatetheaccuracyofimages.Fu’songoingexhibitionaimstoprovidemoreinsightsintohisartworld.Time:9am-5pm,throughMarch19(closedonMondays)Venue:NationalArtMuseumofChina,1WusiStreet,Dongchengdistrict.Ticket:FreeContactuseumcelebrates80-year-oldlacquermasterKnownas“thefatherofmodemChineselacquerart”,80-year-oldQiaoShiguangbreathesnewlifeintothecountry’slong-standingtraditionoflacquerpainting(_画)•Heapplieseggshellchips(蛋壳碎片)todemonstratethepeacefulbeautyofSouthernChina.ThelacquerpaintsunderhisbrushespresentsthedepthofEasternaesthetics.Time:9am-5pm,throughMar19Venue:NationalCenterforthePerformingArts,2WestChang’anAvenue,Xichengdistrict.Ticket:FreeContact:010-665500001、Accordingtothetext,wecanlearnthatFuWenjunisa(n).A．photographerB．lacquerpainterC．broadcasterD．conceptualartist2、AssumingyouareinterestedintraditionalChinesepaintings,whencanyougoandenjoyoneaccordingtothetext?A．10am,Mar31B．3pmMar19C．9pmMay31D．10amMay193、Youcanenjoythefollowingartworksfreeofchargeexcept.A．FuWenjun’sworksB．QiaoShiguang’sworksC．photosofthebeautyofMotherNatureD．AHistoryoftheWorldin100Objects25．（10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．Howtotakeaplane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）AmanandhiswifearrivedinBostonbytrain．Aftergettingoffthetrain,theywalkedwithoutan1intotheouterofficeofHarvard’spresident．Sotheywerestoppedbyhissecretaryandkept2．Forhours,thesecretarytooknonoticeofthem,3thatthecouplewouldfinallybecomedisappointedand4．Buttheydidn’t．Thesecretaryfinallydecidedtodisturbthepresident,though5．Afewminuteslater,thepresidentwalkedtowardsthecouplewitha6face．Theladytoldhim,“Wehadasonthat7Harvardforoneyear．HelovedHarvard．Hewas8here．Butaboutayearago,hewasaccidentallykilled．MyhusbandandIwouldliketo9（纪念物）tohim,somewhereoncampus．”Thepresidentwasn’tmoved．Instead,hewas10．“Madam,”hesaid,“wecan’tputupastatueforeverypersonwhostudiedatHarvardanddied．Ifwedid,thisplacewouldlooklikea11,”“Oh,no,”thelady12quickly．“Wedon’twanttoputupastatue．Wewouldliketogivea13toHarvard．”Thepresidentrolledhiseyesand14atthecoupleandthenexclaimed,”Abuilding!Doyouhaveany15howmuchabuildingcosts?Wehavespentover＄7,500,000onthecampusbuildingatHarvard．”Foramomenttheladywassilent．Thepresidentwas16,becausehecouldgetridofthemnow．Thentheladyturnedtoherhusbandandsaidquietly,“Isthatallitcoststostarta17?Whydon’twejuststartourown?”Herhusbandnodded．18theirofferwasturneddown．Mr．andMrs．StanfordtraveledtoCaliforniawheretheyfoundedStanfordUniversity19afterthem,amemorialtoasonthatHarvardnolonger20about．1、A．choiceB．decisionC．acquaintanceD．appointment2、A．waitingB．standingC．sittingD．talking3、A．hopingB．findingC．realizingD．imagining4、A．godownB．gooutC．goawayD．goaround5、A．hopelesslyB．carefullyC．unexpectedlyD．unwillingly6、A．pleasantB．funnyC．coldD．sad7、A．attendedB．visitedC．studiedD．served8、A．cleverB．braveC．proudD．happy9、A．setaboutB．setupC．setdownD．setoff10、A．satisfiedB．excitedC．shockedD．ashamed11、A．parkB．cemeteryC．gardenD．museum12、A．explainedB．expressedC．refusedD．admitted13、A．buildingB．yardC．playgroundD．square14、A．laughedB．shoutedC．glancedD．called15、A．suggestionB．ideaC．thoughtD．opinion16、A．boredB．astonishedC．interestedD．pleased17、A．departmentB．universityC．businessD．club18、A．OnceB．WhileC．SinceD．Though19、A．namedB．lookedC．takenD．followed20、A．talkedB．knewC．heardD．cared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）Itis2years1．wehadacleaningladyandforsomereasonmyhusbandhasbecomeverydemandingtowardher.Hebelievesshedoesnotworkaswellassheusedto.Hecomplainsalotandhasdecidedtocomplaintoher.YesterdayItriedseveral2．(time)todiscusswithhimmy3．(satisfy)withherwork,buthewasalittlebitupset.ThismorningIlookedatthehouseandallthecleaningshe4．(do)before.Ithoughtitwasunfairtocomplainbecauseshewasdoingsuch5．greatjob.SoIfoughtforheragain,6．(say)itwasunnecessarytocomplain.Shewasdoingwellandshedeservedtoget7．(pay)moreandtoreceivesomeextramoneyforthenewyear.And8．(final)myhusbandtoldherthatwehaddecidedtopayhermore,9．wasasurprisetoher.I’mveryhappyIhaveprotectedthisladyfromunfairwordsandthatwearetreatingherfairlynowanddoingsomethingtoshortenthegap10．therichandthepoor.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Nowadaysmanypeopledriveinsteadoftakingabusorwalkingtowork、Itcausesmoretrafficaccidents、Asthestudent,whatcanwedotoguaranteeoursafe?Firstofall,thetrafficrulesmustbestrictobeyed、Whenwecrossstreets,waituntilthetrafficlightturngreen、Next,don'tforgetwalkonthepavement、Finally,Ithinkitverydangerouslytowearheadphoneswhilewalkingorcycling,Sincewecan'tpayenoughattentiononthetrafficaroundus,soaccidentsmayhappen、Takinggoodcureofourselvesanddon’tletourparentsworryaboutthem、19第二节书面表达（满分25分）29．（25分）假设你是李华，你的英国好友Henry最近来信询问你的暑假安排。请你根据以下要点用英语回一封信，说明你的计划，并阐述理由。要点：1.休息；2.读书；3.陪伴父母；4.参加社会活动。注意：1.从上述四个要点中任选三个；2.词数100左右；3.可根据内容要点适当增加细节，使行文连贯。参考词汇：社会活动socialactivities_________________________________________________________________________________________________________________________________________________________________________________________________________________

参考答案第一部分（共20小题，每小题1.5分，满分30分）1、D2、D3、D4、A5、C6、B7、C8、B9、A10、D11、B12、C13、D14、C15、B16、B17、A18、A19、A20、D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、A2、D3、C4、A22、1、B2、C3、A4、D23、1、B2、A3、C24、1、D2、B3、D25、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.Themajorproblemwitht