陕西省西安音乐学院附属中等音乐学校2025届高三第四次模拟考试英语试卷含解析

陕西省西安音乐学院附属中等音乐学校2025届高三第四次模拟考试英语试卷考生须知：1．全卷分选择题和非选择题两部分，全部在答题纸上作答。选择题必须用2B铅笔填涂；非选择题的答案必须用黑色字迹的钢笔或答字笔写在“答题纸”相应位置上。2．请用黑色字迹的钢笔或答字笔在“答题纸”上先填写姓名和准考证号。3．保持卡面清洁，不要折叠，不要弄破、弄皱，在草稿纸、试题卷上答题无效。第一部分（共20小题，每小题1.5分，满分30分）1．InBeijing,morethan21,100people________todonatetheirbodiesbytheendof2017,asthecitypromotedabodydonationcampaignfrom1999.A．haveappliedB．hadappliedC．wouldhaveappliedD．applied2．Meyerandhisteamwerethefirst______howthediseasespreadsfromanimalstohumans.A．showing B．show C．toshow D．shown3．---Areyousatisfiedwithhisschoolreport?---Notatall.Itcouldn’thavebeen______.A．worseB．sobadC．betterD．theworst4．Bothmenhavebeen_______tolifeimprisonmentbecauseofrobbery.A．choked B．condemnedC．consisted D．convinced5．______youaresupposedtodo______youdon'tlikeathingis______it.Don'tcomplain.A．That;what;change B．When;that;tochangeC．What;when;change D．What;that;changing6．StarskaterWuDajingwonChina’sfirstgoldmedalatthe2018PyeongChangOlympicWinterGamesbreakingworldrecordinshorttrackmen’s500m.A．toB．byC．withD．in7．Timeispressing．Youcannotstartyourtask_____soon．A．too B．very C．so D．as8．Thesolutiontoaproblem，wearetold，oftencomestothinkersina"flashof________"．A．inspiration B．insightC．invitation D．innovation9．PeopleexpectShanghaiDisneylandParktoofferbetterservicethan________ofTokyo’s.A．this B．it C．one D．that10．Thiswasreturnedbecausetheperson________thisletterwasaddressedhaddiedthreeyearsago.A．towhom B．towhichC．which D．whom11．—Mycomputerisoutoffunctionagain.—Youneedtogotothecustomerservicecenterandhaveit________.A．torepairB．repairC．repairingD．repaired12．Theyoungmanwhowasexpectedto________hisfather’scompany,madeanunusualdecisionthathewouldstarthisownbusiness.A．handover B．thinkoverC．goover D．takeover13．Itisafoolishactto________notesduringatestasyouwillbeseverelypunished.A．stickto B．referto C．keepto D．pointto14．Youhaveabigmouth,Tom.Youhavetoldeverybodythesecret.A．can’t B．mustn’tC．shouldn’t D．mightn’t15．Becalm,Madam.Canyouremember_____________youhadyourmobilephonestolen?A．whenwasitthat B．thatitwaswhenC．whereitwasthat D．itwaswherethat16．Everyoneinthevillagehopedthathewould______afterafewdays’treatment.A．pickup B．comeup C．keepup D．makeup17．Theaffairsofeachcountryshouldbebyitsownpeople.A．electedB．settledC．developedD．contained18．Itisnotlikehertobesoimpolite;sheyouwhenyougreetedher.A．mightnothaveheard B．shouldnothaveheard C．mustn’thear D．shouldn’thear19．—HowcanIwakeupsoearly?—Setthealarmat5:00am.,youwillmakeit.A．and B．butC．or D．so20．Beinghappyisaskillthatcanbelearned,andonewayto________ourselvestobehappyistowritedownthelittlethingsthatcheerusupeachday.A．convey B．appeal C．train D．attempt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）Iwasintheseventhgrade,andwehadmovedtoNewJerseyinNovember.Bythen,everyonealreadyhadhadtheirownfriends,andnoonewantedtotalktoanewgirl.Tomakethingsworse,theyputmein“SectionL”.IfoundoutlaterthateveryonecalledSectionL“Loserville”.Itwassortofanopensecretthatitwasthesectionfortroublemakersandnot-so-smartkids.WhenIfoundout,Iwantedtoscream.Ihadalwaysbeenagoodstudentandhadamazingfriends,andnoweveryonethoughtIwasaloser!IdidtextmyfriendsinIllinoisalmosteverynight,especiallymybestfriend,Ana.Atfirstmyfriendswantedtohearallaboutit.ButthensomestoppedtextingbackonceIsaidsomethingabouthowmiserableIwas.OnenightwhenIwastextingwithAna,Icomplainedaboutanotherfriendwhohadjustdonethat.Ana’stextscamereallyfastforthenextfewminutesandtheysurprisedme.ShesaidthatshewastiredofhearingabouthowbadeverythingwasinNewJersey,too.ShesaidshedidnotwanttohurtmyfeelingsbutthatIneededtostopfeelingsosorryformyselfallthetime,Ihadtotrytomakethingsbetter.Thenextday,IthoughtalotaboutwhatAnahadsaid.Shewasright!IwishIcouldsaythateverythingchangedovernightafterthat,butitdidn’t.Iwasstillstuckin“Loserville”,andsomepeoplewerestillmeantome,eventhoughItriedtojuststayoutoftheirway.Butwhatdidchangewasme—Istoppedfeelingsosorryformyselfanddidsomethingaboutmakingfriends.Isigneduptomakesetsfortheschoolplay.Imetalotofnewpeoplethere,andsuddenlyIhadfriendstosayhitointhehalls!IstillmissIllinoissometimes,butlifeinNewJerseyisn’tsohardanymore.EventhoughIcouldn’tchangemysituation,Icouldchangemyattitude—andthatmadeallthedifference.1、“Loserville”isasectionfor________.A．failures B．goodstudentsC．classsecrets D．newcomers2、Thewritercomplainedallthetimeinthenewenvironmentbecause________.A．Anadidn’ttextbacktoher B．herfriendshurtherfeelingsC．shewasunfairlytreated D．shewasagoodstudent3、Whatmadeadifferenceinchangingthesituation?A．ShewentbacktoIllinois.B．SheendedfriendshipwithAna.C．Shefoughtbackwithherclassmates.D．Shebegantomakefriendswithothers.4、Thebesttitleforthepassagecanbe________.A．LastingFriendship B．AnIncidenceatSchoolC．SayGoodbyeto“Loserville” D．Unhappinessin“Loserville”22．（8分）Haveyoueverpressedthepedestrianbuttonatacrosswalkandwonderedifitreallyworked?They’recalled“placebo(安慰剂）buttons”一buttonsthatmechanicallysoundandcanbepushed，butprovidenofunctionality.InNewYorkCity,onlyabout100ofthe1,000crosswalkbuttonsactuallyfunction.Crosswalksignalsweregenerallyinstalledbeforetrafficjamhadreachedtoday’slevels.Butwhiletheirfunctionwastakenoverbymoreadvancedsystems—suchasautomatedlightsortrafficsensors—thephysicalbuttonswereoftenkept,ratherthanbeingreplacedatfurtherexpense.Othercities，suchasBoston，DallasandSeattle，havegonethroughasimilarprocess,leavingthemwiththeirownplacebopedestrianbuttons.InLondon,whichhas6,000trafficsignals,pressingthepedestrianbuttonresultsinareliable“Wait”light.Butthatdoesn’tnecessarilymeanthatthe“greenman”—or“pedestrianstage”intrafficsignaldesignprofession—willappearanysooner.“Wedohavesomecrossingswherethegreenlightcomesonautomatically,butwestillaskpeopletopressthebuttonbecausethatenablesaccessiblefeatures,’’saidGlynnBarton,directorofnetworkmanagementatTransportforLondon.Thesefeatures,suchasblindtracksandhearabletrafficsignals,helppeoplewithvisualdisordercrosstheroadandonlyfunctionwhenthebuttonispressed.Asforthelights,agrowingnumberofthemarenowcombinedandbecomeapartofanelectronicsystemthatdetectstrafficandadjuststimefrequencyaccordingly(givingprioritytobusesifthey’rerunninglate,forexample),whichmeansthatpressingthebuttonhasnoeffect.AccordingtoLanger,aHarvardpsychologist,placebobuttonsgiveustheillusion(错觉)ofcontrol—andsomethingtodoinsituationswherethealternativewouldbedoingnothing.Inthecaseofpedestriancrossings,theymayevenmakeussaferbyforcingustopayattentiontooursurroundings.“Theyserveapsychologicalpurposeattheveryleast,”sheadded.1、Whyarethephysicalbuttonsstillkeptinsomecities?A．Becauseitmaycostmoneytoreplacethem.B．Becausetheyremainasmemoriesofacity.C．Becausedohaverealfunctionsintraffic.D．Becausetheycanresultinreliablelights.2、Whichofthefollowingwordcanreplacetheunderlineword“features”inParagraph4?A．Functions. B．Uses.C．Equipment. D．Facilities.3、Ifyoupresseda“placebobutton”inLondon,whatwouldhappen?A．Alltrafficwouldbeaffected. B．Somekindofsoundmightappear.C．Pedestrianscamefirsttocrosstheroad. D．“Greenman”wereboundtoshowupearlier.4、Whatcanweknowabout“placebobuttons”fromLanger’swords?A．Theycanreallycontroltraffic. B．Theyservelittlefunctions.C．Theymayworkmentally. D．Theycanhelptheblind.23．（8分）Haveyoueverrunintoacarelesscellphoneuseronthestreet?Perhapstheywerebusytalking,textingorcheckingupdatesonWeChatwithoutlookingatwhatwasgoingonaroundthem.Asthenumberofthisnew“species”ofhumanhaskeptrising,theyhavebeengivenanewname—phubbers（低头族）.Recently,acartooncreatedbystudentsfromChinaCentralAcademyofFineArtsputthisgroupofpeopleunderthespotlight.Intheshortfilm,phubberswithvarioussocialidentities(身份)burythemselvesintheirphones.Adoctorplayswithhiscellphonewhilelettinghispatientdie,aprettywomantakesselfieinfrontofacaraccidentsite,andafatherloseshischildwithoutknowingaboutitwhileusinghismobilephone.Achainofsimilareventseventuallyleadstothedestructionoftheworld.Althoughtheendingsoundsoverstated,thedamagephubbingcanbringisreal.Yourhealthisthefirsttobeartheeffectandresultofit.“Constantlybendingyourheadtocheckyourcellphonecoulddamageyourneck,”GuangmingDailyquoteddoctorsassaying.“theneckislikearopethatbreaksafterlong-termstretching.”Also,staringatcellphonesforlongperiodsoftimewilldamageyoureyesightgradually,accordingtothereport.Butthat’snotall.Beingaphubbercouldalsodamageyoursocialskillsanddriveyouawayfromyourfriendsandfamily.Atreunionswithfamilyorfriends,manypeopletendtosticktotheircellphoneswhileothersarechattinghappilywitheachotherandthiscreatesastrangeatmosphere,QiluEveningNewsreported.Itcanalsocostyouyourlife.Therehavebeenlotsofreportsonphubberswhofelltotheirdeath,sufferedaccidents,andwererobbedoftheircellphonesinbroaddaylight.1、ForwhatpurposedoestheauthorgivetheexampleofacartooninParagragh2?A．Toinformpeopleofthebadeffectsofphubbing.B．Toadvertisethecartoonmadebystudents.C．Toindicatetheworldwillfinallybedestroyedbyphubbers.D．Towarndoctorsagainstusingcellphoneswhiletreatingpatients.2、WhichofthefollowingisNOTariskaphubbermayhave?A．Hissocialskillscouldbeaffected.B．Hisneckandeyesightwillbegraduallyharmed.C．Hewillcausethedestructionoftheworld.D．Hemightgetseparatedfromhisfriendsandfamily.3、Whichofthefollowingmaybetheauthor’sattitudetowardsphubbing?A．Supportive.B．Opposed.C．Optimistic.D．Objective.4、Whatmaythepassagetalkaboutnext?A．Adviceonhowtouseacellphone.B．Peopleaddictedtophubbing.C．Measurestoreducetherisksofphubbing.D．Consequencesofphubbing.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）IamastonishedatthewayGodknowswhentosendaspecialgiftofencouragementatjusttherighttime!Itmightbeinadream,alostletter,amemory,orsomethingfoundthatwe’dforgottenabout.MygrandmotherwasfromatowninMichigan.AndsummeraftersummerIenjoyedstayingwithmygrandparentsasayoungchild.Iwasfromthecityandlovedthesmalltownwheretheylived.Peoplekneweveryone,theirchildren,theirpets,theirancestors.Grandmawasalwaysusingherhandsforsomethingexciting…Shewouldmakesandwichesandwe’dhaveteaparties,plantflowersandcarefullytendthem.Shelovedknittingsweatersaswellasmakingbeautifulquiltsforhergrandchildren.Irememberthesmallthimble(顶针)shewouldplaceonherfingerwhiledoingherneedlework.Afewyearsago,whenGrandmaleftthisearthforhernewresidenceinHeaven,Ibidfarewelltomylovinggrandmother.Howquicklyourlivescanchange!Wehadjusthadteatogetheracoupleofmonthsearlier,onher91stbirthday.Imissedherverymuch,butInoticeditmostlyonmybirthdays,becausetherewasnocardfromGrandma.She’dneverforgottenmybirthday!OnoneparticularbirthdaywhenIwasfeelingalittlelow,somethinghappenedandmademefeelasifshewassharingthatspecialdaywithme.Iwasarrangingsomecolorfulpillowsthatshehadmade,andsuddenlyIfeltsomethinginsideonepillow；itwassmallandhard.Imovedtheobjecttoaseam(缝)thatIcarefullyopened,and,tomydelight,outcameatinysilverthimble!HowhappyIwastofindsomethingthathadbeenapartofher!Notrealizingithadfallenoffherfinger,IpicturedhersewinghintothatlittlepillowthatIjusthappenedtofluff(抖松),toplaceonmybedspread(床罩)thatday.IcarefullylaidthethimblealongsidetheothersIdcollectedovertheyears.Whatapreciousmemoryofaveryspecialladywho,somehow,Iknew,waslaughingindelightatsewingherthimbleintomypillow.Iheatedthekettleandmadesometea,usingmybestchina,asGrandmaalwaysdid,andthenenjoyedmyteaandGrandma’sthimble.Whatawonderfulbirthdaythatwas!1、Intheauthor’smemory,whatwouldhergrandmotherdo?A．Shewouldmakesandwichesandhamburgersforherfamily.B．Shewouldwearathimbleforneedleworkeveryday.C．Shewouldmakebeautifulquiltsformoney.D．Shewouldlookaftertheflowersinthegarden.2、Whatdoestheunderlinedword“it”inParagraph4referto?A．Themodernworld’sfast-changinglife.B．Thefactthatthegrandmotherhadpassedaway.C．Theauthor’smissinghergrandmother.D．Thelovetheauthorgotfromhergrandmother.3、Howdidtheauthorfeelwhenshefoundthethimble?A．Surprised.B．Regretful.C．Guilty.D．Lonely.4、Whichofthefollowingmightbethebesttitleforthepassage?A．Grandma’sThimbleB．Grandma’sLifeStoryC．TheJoyofFindingSomethingLostD．TheImportanceofPuttingThingsAway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）完形填空阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填人空白处的最佳选项，并在答题卡上将该项涂黑。Itwasmyfirstcollegeactingclass.Withgreathesitation,sweatinghandsandan1heart,1walkedintotheclassroom.Ihadspentmyentirelife2publicspeaking.Butnowherelwas,3notonlytolearnhowtospeaklikesomeoneon4buttobecomethementirely.Theaterclassesare5atmanyhighschoolsanduniversitiesintheUS."Theaterkids"areaquitedifferentbunchwhoalwaysseemedableto6aroomwiththeirpersonalities.7itwasonlyabeginner-levelcourse,mycollegeclasswasfilledwithstudentswhoseemeda8fitforacting.Theywereconfident,funnyand9Theprofessor,astout（矮胖）womanwithapermanentsmileandgentlebehavior,10justaswell,She11useachwithahandshakeandwelcomingeyes.Theclasswasheldinacircularroomwith12situatedaroundtheedges.Thisallowedeveryoneintheroomtohavea(n)13fwhateverperformanceorlecturewas14inthecenter.Afterourfirst-dayofintroductions,eachweekwe15inaseriesofactivitiesdesignedtohelpusfindourowninner16Wesangsongs,dancedtomusic,andrecited17fromourfavoriteshortstories.The18waseyeopening.Ilearnedthatanyonehasthe19toact,andmanyofusalreadydoinourdailylife.Intheend,I'mnot20一thatlwouldconsidermyselfanactor.ButIdon'tthinkIeverhadmorefuninacollegeclass.1、A．unsteady B．unsatisfied C．unusual D．unfair2、A．practicing B．avoiding C．delivering D．learning3、A．refusing B．happening C．preparing D．hesitating4、A．stage B．campus C．strike D．trial5、A．difficult B．expensive C．advanced D．popular6、A．putup B．makeup C．lightup D．breakup7、A．Though B．Since C．Unless D．Once8、A．strange B．natural C．common D．formal9、A．outgoing B．cautious C．hardworking D．patient10、A．served B．prepared C．spoke D．fit11、A．inspired B．supplied C．greeted D．comforted12、A．blackboards B．tables C．lights D．chairs13、A．view B．opinion C．debate D．command14、A．leaving B．occurring C．arriving D．declining15、A．took B．succeeded C．shared D．participated16、A．singer B．actor C．professor D．dancer17、A．characters B．proverbs C．lines D．plots18、A．adventure B．concert C．competition D．experience19、A．gift B．interest C．tendency D．desire20、A．content B．sure C．aware D．Doubtful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）TheSpringFestival,ChineseNewYear,isoneof1．mostimportantfestivalsforallofus.2．wecelebrateistheendofwinter,arrivalofspring,andreunionwithfamilyandrelatives.UsuallytheSpringFestival3．(celebrate)forfifteendays,duringwhichpeopledonotworkexceptfortheworkersonduty.OnNewYear’sEveallfamilymembersgettogether4．(have)abigmeal.AfterthemealtheywatchTVuntiltheclockstrikestwelve.Theneveryfamilysetsofffireworks5．(excite)towelcomethenewyear.Onthefirstdayofthenewyear,almosteveryoneisdressedinhisorherbestclothes.Friendsandrelativesarebusy6．(visit)eachotherwithpresents.Atthattime,childrenarethehappiestbecause7．cangetmanyredpacketsfromtheirrelatives.Withthe8．(improve)oflivingstandard,people9．(change)thewaysofcelebratingtheSpringFestivalgreatlysofar.Nomatterhowitchanges,themeaningoftheSpringFestivalisstill10．greatsignificanceinChina.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。Asisoftenthecase,whenpeopleareattendingmeetings,havingmealsorwaitingforbuses,youcanalwaysfinditaddictedtotheirphones,completelyignoreothers、Thisisreallyacommonphenomenoninourlife、ThereasonisbecausesmartphonesnowadayscanbeusedforpeopletoplaymobilegamesbutkeepintouchwithfriendsthroughQQandWechat、However,toomanyexposuretophonesisbadforpeopleintermofhealth、Moreover,peoplewhowereengagedinphonesfailtocommunicatewellthosearoundthem、AsfarasI'mconcerned,peopleshouldwisemakeuseoftheirphonestohelpwiththeirworkandstudy、Meanwhile,theyshouldbecaremoreabouttheirfamilymembersandfriendsratherthanmobilephones、第二节书面表达（满分25分）29．（25分）假设你是李华，你的英国朋友Jack热爱中国的传统文化，尤其对中国的茶文化感兴趣，听说你的家乡是著名的砖茶之乡，他想了解相关情况。请你给他写封电子邮件，告知有关信息。内容包括：1.中国茶文化历史悠久，促进了人文交流和社会发展；2.介绍自己家乡的相关情况（如：羊楼洞盛产砖茶，是著名的茶马古道起点之一）；3.邀请他到中国亲身体验（以茶会友，听茶事，观茶艺，赏茶具，品好茶）。注意：1.词数120左右；2.可适当增加细节，以使行文连贯。3.参考词汇：羊楼洞YangLoudong茶马古道GreatTeaRoad砖茶bricktea_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Yours,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、C3、A4、B5、C6、B7、A8、B9、D10、A11、D12、D13、B14、C15、C16、A17、B18、A19、A20、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、A2、C3、D4、C22、1、A2、D3、B4、C23、1、A2、C3、B4、C24、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,scientistshaveinventedsever