2024届云南楚雄州南华县民中高考冲刺英语模拟试题含解析_第1页
2024届云南楚雄州南华县民中高考冲刺英语模拟试题含解析_第2页
2024届云南楚雄州南华县民中高考冲刺英语模拟试题含解析_第3页
2024届云南楚雄州南华县民中高考冲刺英语模拟试题含解析_第4页
2024届云南楚雄州南华县民中高考冲刺英语模拟试题含解析_第5页
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2024届云南楚雄州南华县民中高考冲刺英语模拟试题注意事项:1.答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。2.回答选择题时,选出每小题答案后,用铅笔把答题卡上对应题目的答案标号涂黑,如需改动,用橡皮擦干净后,再选涂其它答案标号。回答非选择题时,将答案写在答题卡上,写在本试卷上无效。3.考试结束后,将本试卷和答题卡一并交回。第一部分(共20小题,每小题1.5分,满分30分)1.Ascientist’sattempttoproducetheworld’sfirstgene-editedbabies_____areimmunetoHIVhassparkedcontroversyinacademiaandthepublic.A.as B.whoC.whom D.whose2.——Whatwaswrong?Whydidn’tyougotothepicnicasscheduled?——I’msorry.I_________aseriously-injuredoldmantothehospital.A.woulddeliverB.deliveredC.haddeliveredD.wasdelivering3.—Whydidyoucomebytaxi?—MycarbrokedownlastweekandIstillitrepaired.A.didn’thave B.hadn’thadC.haven’thad D.won’thave4.____________thefiercecompetitioninjobseeking,manyuniversitygraduateshavenochoicebuttoreducetheirowndemandforthesalary.A.FacedB.FacingC.TofaceD.Havingfaced5.ThepredictionfromMayaworriesresidents_______December21,2012wouldbetheendoftheworld.A.if B.that C.whether D.which6.China'sBeidouNavigationSatelliteSystemhasstartedprovidingglobalservices,________tobecomecompletearound2020.A.beingscheduled B.scheduled C.toschedule D.scheduling7.Doyouknowthat______chairmanofthemeetinghasannouncedthatMrHodgehasbeenmade______managerofthisfactory?A.the,the B./,the C.the,/ D.a,a8.Heissuchanunselfishman.Youcannothelpbut________him.A.respectB.torespectC.neglectD.toneglect9.—Mum,littleRaybrokehistoysagain!—Itdoesn'tmatter.Yousee,accidents_____happen.A.shall B.should C.must D.will10.—Mum,wouldyoupleasebuymeanMP5player?—Ifyoucanhelpdosomehouseworkthewholevacation,you____haveoneasareward.A.must B.need C.would D.shall11.—Iwillbeavicepresidentinayearortwo.—Youcan’tbeserious!_______.A.Ican’tmakeitB.Ican’thelpitC.Iwon’ttellasoulD.Iwouldn’tbetonit12.Mostspendingthatresultsindebtislikeadrug:aquickhitofpleasurethat______,onlytodragyoudownforyearstocome.A.takesoff B.wearsoff C.setsoff D.showsoff13.Mysummercampisn’tgoodfun,butitisreallearningexperienceforme.A.a;/ B.the;a C./;a D.a;the14.wegotherebytrainorbyshipmakesnodifference.Thetimeandthefeesarethesame. A.Which B.How C.Whether D.Why15..Somepeoplesaymorebutdoless______othersdotheopposite.A.once B.when C.while D.as16.Advertisingoftenfunctionsasanindicatorfor______societyconsiderstobesociallyacceptableanddesirableatthetime.A.what B.whetherC.how D.which17.Ipreferaschool______teachershavetoworkasateam,insteadoffightingagainsteachother.A.where B.that C.as D.when18._____areceptiontocelebratethe68thanniversaryofthefoundingofthePeople'sRepublicofChina,vicepremierLiuattachedimportancetomutuallybeneficialcooperationbetweenUSAandChina.A.Addressing B.AddressedC.Beingaddressed D.Toaddress19.Whyaresomebrandsmorepopularthanothers______theproductsareofsimilarquality?A.asthough B.evenif C.sothat D.incase20.Touristsarerequiredto_________localcustomsandmindtheirmannerswhentravellingabroad.A.spot B.confirmC.observe D.spread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)HomefromtheNavy,IstartedschoolatGreenvilleCollegeinmyhometownofIllinois.I’dbeenoutofhighschoolforfouryears,butmyhighschoolheadmaster,Mr.Gardner,invitedmetoaValentine’sdaydancepartyatschool.Thethoughtofseeingmyformerteacherswasexciting.SoIagreed.WhenFridaycame,Icleanedup,dressedupanddrovetothehighschoolgym.IchattedwithmyteachersandapproachedMr.Gardnertothankhimbeforeleaving.Justthen,thebandstartedplayingandayounggirlstooduptosing.OnelookatandIwascrazy—Ihadneverseensuchabeautifulgirl!IaskedMr.Gardnerwhoshewas,andheanswered,“That’sMarilynRiley,CutRiley’sdaughter.”Iwasshockedtosaytheleast.Theylivedjustaroundthecornerfromme.Iwalkedacrossthegymfloortointroducemyself,“Hi,I’mJackJoseph.”“Iknowwhoyouare,”washernot-too-friendlyresponse.“Wouldyouliketodance?”Iasked.“No!I’mworking,”sheshotback.“CanIcallyounextweekforamoviedate?”Iasked.“No,”washerresponse.ForthenextmonthIphoned,tryingtosetupadate.Shealwayshadthesameanswer:No.thenonerainyafternooninMarchasIwasdrivinghomeafterbasketballpractice,IsawMarilyn,walkingwithnoumbrella,noraincoat,nohat.Ipulledalongsideherandaskedifsheneededaride,halfexpectinghertosayno.instead,shesteppedovertheroadsideandsatdownontheseatnexttome.Itwasonlyafewblockstoherhouse,butafterpullingintoherdrivewaywetalkedfor45minutes.Itwasmagicfromthenon.1、WhydidJackdecidetoattendtheparty?A.ThepartywasholdtowelcomehimbackhomeB.MarilynwouldbeintroducedtohimatthepartyC.HecouldmeetsomeofhisformerteachersthereD.TheygatheredtheretocelebrateValentine’sDay2、Whatwastheauthor’sattitudetowardstheparty?A.CasualB.FormalC.PassiveD.worried3、Wecaninferfromthetextthat__________.A.JackonceservedinthearmyafterhighschoolB.ittookJack45minutestodriveMarilynhomeC.JackandMarilynwerefamiliarwitheachotherD.itwasMarilyn’scoldattitudethatinterestedJack4、Howwouldthestorymostprobablydevelopintheend?A.MarilynwouldfallinlovewithJackB.JackwouldmakegreatachievementsincollegeC.MarilynwouldbecomeafamoussingerD.JackwouldhavefrequentconflictswithMarilyn22.(8分)RichasaKingWilliam1,whoconqueredEnglandsome930yearsago,hadwealth,powerandanarmy.YetalthoughWilliamwasveryrichbythestandardofhistime,hehadnothinglikeaflushtoilet(抽水马桶),papertowels,orridinglawnmower(除草机).Howdidhegetby?Historybooksarefilledwithwealthypeoplewhowerepoorcomparedtome.Ihavestormwindows,Croesusdidnot.EntirenationstrembledbeforeAlexandertheGreat,buthecouldn’tbuycatfood.CzarNicholaslackedanelectricsaw.GivenhowmuchbetteroffIamthansomanyfamousdeadpeople,you’dthinkI’dbecontent.Thetroubleisthat,likemostpeople,Icomparemywealthwiththatoflivingperson:neighbors,schoolclassmates,famousTVpeople.ThegreedIfeeltowardmyfriendHoward’snewkitchenisnotreducedbythefactthatnokingseverhadarefrigeratorwithglassdoors,Thereisreallynorisingorfallingstandardofliving.Overthecenturiespeoplesimplyfinddifferentthingstofeelsadabout.You’dthinkthatsimplynothavingdiseasewouldputusinagoodmood,butnowewantahotbathtoo.Ofcourse,onewaytoachievehappinesswouldbetorealizethatevenbytoday’sstandardsthethingsIownareprettynice.Myhouseissmallerthanthehousesofmanyinvestmentbankers,butevensoithasalotmoreroomsthanmywifeandIcankeepclean.Besides,topeoplelookingbackatourerafromacenturyortwointhefuture,thesebankers’fancycountertopsandmyawnwornFormicawillseemequallyshabby,Ican’tkeepupwithmyneighborsrightnow.Butjustwait.1、Whatdocstheunderlinedphrase“getby”inthefirstparagraphmean?A.Succeedasaking.B.Dealwithcomplains.C.Getsomeextramoney.D.Liveinasatisfactoryway.2、Howmanyhistoricalfiguresarementionedtocomparelivesinthepastandpresent?A.3. B.4.C.5. D.6.3、Accordingtothepassage,theauthorintendsto.A.tellustobecontentwithlifeB.warnustoliveinasimplewayC.leachustolearnlessonsfromlifeD.encourageuslostruggleforwealth4、What’stheauthor’sattitudetowardslife?A.Doubtful. B.Optimistic.C.Uncaring. D.Cautions.23.(8分)Theworldisfilledwithbeautifulwinterwonderlanddestinationsthatareworthyofavisit.Hereareafewtohelpyougetyourwintervacationresearchstarted.SaltLakeCity,UtahSaltLakeCity,Utahisaperfectspotforskiing.Apartfromskiing,youcanvisitTempleSquare,thecity’smostpopularsitefortourists.TheMormonChurchisopentovisitorsallyearround.Theyoftenhostfreefamily—friendlymovies,playsandmusicevents,makingitagreatplacetofindmoreinformationaboutotherhappeningsinSaltLakeCity.Portland,MaineNewEnglandisagreatvacationdestinationanytimeoftheyear.Thehotelpricesareoftenlowerduringthewintermonthsbecauseitisconsideredoff—seasonastouristsgenerallygatherhereduringthesummerandearlyfill.Soifyouarelookingforaplacetogetgoodvalueforyourwintervacationdollars,putPortland,Maineonyourlistofgo—tospots.Whistler,BritishColumbiaWhistler,BritishColumbiaislocatedabout60milesnorthofVancouver.ItisparticularlyfavoredforitsskiseasonthatstartsduringthethirdweekofNovemberandlaststhroughApril.Whistlerhasbeennamedonseveralinternational“bestof”lists.SoifyouwanttogoskiingandyouarereadytoexploreCanada’sCoastMountainRange,thenyoushouldlookintoWhistlervacationrentals(出租).Planningyourwinterwonderlandgetawayiseasyifyouknowwheretolook.Youdon’thavefeellikeyouhavetogotoahot,overpriceddestinationduringthewintermonths.Plentyofsnowy,fun—filleddestinationswillwelcomeyouwarmly.1、Wherecanyougoifyouwanttoenjoylivemusicperformancewithyourfamily?A.Portland,Maine.B.TempleSquare.C.Whistler.D.MormonChurch.2、WhoisthemostlikelytogotoPortland,Maine?A.Peoplewholikeskiing.B.Peoplewhohaveflexibleschedules.C.Peoplewithtightbudgets.D.Peoplewithreligiousbeliefs.3、WhathasprobablymadeWhistlerwinitsinternationalreputation?A.Itssports—lovingresidents.B.Itslong—lastingskiseason.C.Itslow—carbonlifestyle.D.Itseasily—accessiblecoast.24.(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.Howtotakeaplane25.(10分)Imagineyou’restandinginlinetobuyasnackatastore.Youstepuptothecounterandthecashierscansyourfood.Next,youhavetopay.ButinsteadofscanningaQRCode(二维码)withyoursmartphone,youjustholdoutyourhandsothecashiercanscanyourfingerprint.Or,acamerascansyourface,youreyesorevenyourear.Now,thistypeoftechnologymightnotbefaraway.Astechnologycompaniesmoveawayfromthetraditionalpassword,biometric(生物特征识别的)security,whichincludesfingerprint,faceandvoiceID,isbecomingincreasinglypopular.In2013,AppleintroducedtheiPhone1s,oneofthefirstsmartphoneswithafingerprintscanner.Sincethen,usingone'sfingerprinttounlockaphoneandmakemobilepaymentshasbecomeacommonplace,bringingconveniencetoourlives.Andsince2012,Samsunghasfeaturedeye-scanningtechnologyinitstopsmartphones,whileApple'snewiphoneXcanevenscanauser'sface.Butdespiteitspopularity,expertswarnthatbiometricsmightnotbeassecureasweimagine."Biometricsisideallygoodinpractice,notsomuch,"saidJohnMichener,abiometricsexpert.WhenintroducingthenewiPhone'sfaceIDfeature,PhilSchiller,Apple'sseniorvice-president,said."ThechancethatarandompersoninthepopulationcouldlookatyouriPhonesXandunlockitwiththeirfaceisaboutoneinamillion."Butit'salreadybeendone.InavideopostedonacommunitywebsiteReddit,twobrothersshowedhowtheywereeachabletounlockthesameiPhoneXusingtheirownface.Andtheyaren'teventwins."Wemayexpecttoomuchfrombiometrics,"AnilJain,acomputerscienceprofessoratMichiganStateUniversity,toldCBSNews."Nosecuritysystemsareperfect."Earlierlastyear,Jainfoundawaytotrickbiometricsecurity.Usingaprintedcopyofathumbprint,shewasabletounlockadeadperson'ssmartphoneforthepolice,accordingtoatechwebsiteSplinter."It'sgoodtoseebiometricsbeingusedmore,"JaintoldCBSNews,"becauseitaddsanotherfactorforsecurity.Butusingmultiplesecuritymeasuresisthebestdefense."1、Whichisthelatestidentificationtechnologyinasmartphoneaccordingtothepassage?A.Facescanning.B.Eyescanning.C.QRCodescanning.D.Fingerprintscanning.2、WhatisamajorproblemoftheiPhoneX'sfaceIDsystem?A.Ittakestoolongtounlockthephone.B.Itoftenfailstorecognizeitsowner'sface.C.Facedatacanbeusedforotherpurposes.D.Differentfacescanbeusedtounlockthesamephone.3、WhatisAnilJain'sopinionaboutbiometricsecurity?A.Itisassecureastraditionalmeasures.B.Itisperfectwithoutmuchimprovement.C.Ithascausedmuchtroubleforthepolice.D.Itshouldbeusedwithothersecuritymeasures.4、Whatdoestheauthorintendtotellusinthispassage?A.Thepopularityofbiometrics.B.Securityproblemsofbiometrics.C.Variousproblemswithbiometrics.D.Greatchangescausedbybiometrics.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)Attheageofnine,Iwastakingswimminglessonsatapool.ThedayhadarrivedwhenIwastobetestedtoseeifIcould1toahigherlevelclass.Fifteenofuswereto2swimmingfromonesideofthepooltotheotherandback.Iwatchedasmy3,onebyone,triedandfailed.Thenitwasmyturnto4,Imean,myturntoattempttopassthetest.IwasabouthalfwaywhenIgot5Iimmediatelystoppedand6thesideofthepool,endingmytest.Ourinstructor,acollegestudent,wasstanding7me.“Whydidyoustop?”heyelled,inaless—than8voice.“Igotwaterinmynose,”I9.That’swhenthiscollegestudent10meoneoflife’sgreatlessons,11heprobablyneverrealizedthat.Bendingdown,heshouted,“So?”“So?”The12shockedme.Ithadjustseemed13tomethattheanswertopainwastoremovethethingcausingthe14.Mynine-year-oldbrainhadnotunderstoodthefactthatavaluable15isworthachieving,howeverdifficulttogetthere.Recognizingthat,Iwas16nothingwouldkeepmefromcompletingthetest.Infact,Ididitrather17onmynextattempt.Seeingme18thetest,almostalltheothersdidsoaswell.Lifeisajourney,andtheroadwon’t19beeasy.Wehavetofocusonthefinaldestination,notthe20alongtheroad.1、A.skipB.referC.advanceD.add2、A.taketurnsB.insistonC.takerisksD.putoff3、A.competitorsB.classmatesC.studentsD.instructors4、A.showB.leaveC.failD.observe5、A.injuredB.blamedC.trappedD.choked6、A.pushedB.pressedC.grabbedD.controlled7、A.aboveB.belowC.besideD.beyond8、A.surprisedB.sympatheticC.annoyedD.cold9、A.explainedB.reactedC.declinedD.urged10、A.deliveredB.owedC.taughtD.promised11、A.sothatB.asifC.incaseD.evenif12、A.problemB.excuseC.questionD.voice13、A.logicalB.illegalC.ridiculousD.impossible14、A.disasterB.discomfortC.damageD.fear15、A.resultB.advantageC.goalD.task16、A.concernedB.sensitiveC.embarrassedD.sure17、A.slowlyB.easilyC.clumsilyD.eagerly18、A.attendB.takeC.giveD.pass19、A.alwaysB.sometimesC.everD.seldom20、A.sightsB.barriersC.surprisesD.harvests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)Generallyspeaking,whenyouhavereturnedhomefromaforeigncountry,you’llnoticeyourselfdoingthingsalittle1.(different).Maybeyou’llstartridingyourbiketothesupermarketratherthandrivingacar.You’llbegintodance2.adifferentrhythm(节奏)becauseit’stheonlyway3.makessensetoyou.Onedayyourheartwillstartmissingthosefar-awaysights,soundsandsmellsthatyou4.(leave)behind---thehumidity(湿润)ofarainforestafteradownpour,theheavenlysmelloffoodatthestreetmarketandtheorchestra(交响乐)ofmonkeys,birdsandotherwildthingsoutsideyourwindowatnight,5.sentyoutosleep.Lifehasforeverchanged,andthe6.(explain)issimple:you’veleftalittlepieceofyourheartbehindthatyou’llnevergetback.Yournewfoundsenseof7.(free)willhaveyousearchtheInternet8.thebestdealsonflightstofindthelastundiscoveredparadise(天堂)besides9.(challenge)theoldversionofyourselfwithnewinterests,pastimes,foodsandwaysofunderstandingtheworldaroundyou.It’snotamatterofwhetheryou’llstartanotheradventure,10.when.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作文。文中共有10处语言错误,每句中最多有两处。每处错误仅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(∧),并在其下面写出该加的词。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。WevoluntarilyparticipatedinanactivityorganizedbyourschoolinSaturday、WegottogetherattheGoodwillSquareandhandedoutleafletstopassers-by,tellthemthesignificanceofenvironmentalprotection、Theleafletssoonattracttheattentionofthepublic、Someofusalsodeliveredapublicspeechtotellpeoplesomeknowledgesabouthowtoprotecttheenvironment、Theywerealsotoldwheretotakeactioninaproperlyandefficientway、ThisactivitywasofferedusachancetocontributetooursocietybutIhavelearnedmuchfromit、Ithinksomeoneshouldbeconcernedaboutourenvironmentandtakeactivepartinimprovingit、13第二节书面表达(满分25分)29.(25分)假如你叫李华。最近,你们班就“Whichisbetter,workingindividuallyorworkinginateam?”为主题进入了辩论,请根据下面提示给校阳光电视台的编辑用英文写一篇短文,客观的介绍辩论情况。1.独立完成:自行安排、自己解决问题;2.合作完成:一起讨论、相互学习;3.我喜欢的方式和理由。注意:1.词数:100左右2.开头已写好,不计入总数。DearEditor,Recently,wehavehadaheateddebateonwhichwayisbettertogetworkdone,workingindividuallyorworkinginateam.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

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、C4、B5、B6、B7、C8、A9、D10、D11、D12、B13、C14、C15、C16、A17、A18、A19、B20、C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、A4、A22、1、D2、B3、A4、B23、1、D2、C3、B24、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.Groundstationshavebeenbuilt

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