四川成都青羊区外国语学校2026届英语高三第一学期期末统考试题含解析

四川成都青羊区外国语学校2026届英语高三第一学期期末统考试题注意事项:1．答题前，考生先将自己的姓名、准考证号码填写清楚，将条形码准确粘贴在条形码区域内。2．答题时请按要求用笔。3．请按照题号顺序在答题卡各题目的答题区域内作答，超出答题区域书写的答案无效；在草稿纸、试卷上答题无效。4．作图可先使用铅笔画出，确定后必须用黑色字迹的签字笔描黑。5．保持卡面清洁，不要折暴、不要弄破、弄皱，不准使用涂改液、修正带、刮纸刀。第一部分（共20小题，每小题1.5分，满分30分）1．Bob’slecturescoveredafairlywiderangeandIcan’tsumupwhathesaysinafewsentences.A．covered B．conveyed C．considered D．commanded2．Atthattime,themovie“ShaolinTemple”,_________LiLianjieplaysthestarringrole,drewtheworld’sattentiontoChineseKungfu.A．where B．when C．that D．which3．Thebookisnowoutofprint,______itcaneasilybeborrowedfromlibraries.A．andB．forC．soD．but4．Difficultiesstrengthenthemind,_____labourdoesthebody.A．if B．asC．for D．so5．Thereis________asafreedinnerinthisworld.Asthesayinggoes,“Nopains,nogains.”A．nosuchagoodthing B．suchnogoodthingC．nosuchgoodthing D．notsoagoodthing6．Thehigh-anxietyfocusonreadingscoremayhavenarrowedstudent________toknowledgeabouttheworldthatcanimprovetheirreading.A．idea B．aid C．belief D．access7．High­speedtrainswhichtravelthroughmyhometown________upto250kmperhourmakeitasmallworld.A．with B．againstC．at D．over8．Varietiesofsolutionshavebeenprovidedforustosolvetheproblem.Wecanchoose________tostartwith.A．it B．that C．each D．one9．Agoodgovernmentisnottopicktechnologies,buttoestablishconditions________innovationissupportedandencouragedintothemarketplace.A．when B．thatC．as D．where10．Thesuggestioncamefromthechairman______thenewrule______.A．what;wasdeveloped B．that;wasdevelopedC．what;bedeveloped D．that;bedeveloped11．Whatactually______theaccidenthasnotyetbeendetermined.A．broughtout B．broughton C．broughtabout D．broughtup12．IntheNameofPeople,apopularTVdrama,showsadeep________onthefightagainstcorruption.A．argumentB．themeC．reflectionD．impression13．—Oh,HannahjusttoldmethatshewasunabletotranslatethereportintoEnglish.—________？Sheoncespent10yearslivinginLondon.A．Guesswhat B．Whynot C．Sowhat D．Howcome14．JustinabookabouthisadventuresinTibet．Ihopehecanfindagoodpublisherwhenitisfinished．A．waswriting B．iscurrentlywriting C．hasalreadywritten D．wrote15．Whenshallwestartthereconstructionofthehistoricbuilding? Notuntilourprogram______bytheauthority. A.willapprove B.willbeapprovedC.hasapproved D.hasbeenapproved16．Thecustomsofficerswereinsistingthatsuitcasesshouldbeopenedandtheircontents_______forcloserinspection.A．laidout B．givenout C．sentout D．pickedout17．I________________afluwhenIwasonaspringoutingwithmyclassmate.A．caughtup B．pickedupC．tookup D．broughtup18．Inordertosatisfytheneedsofthemarket,theelectriccompanyhas______itsfocustotabletcomputersandsmartmobilephones.A．switched B．shapedC．directed D．discovered19．WorldAIDSDayisalsoimportantinremindingusthatHIVhasnotgoneaway,andtherearemanythingsstilltobedone.A．which B．whatC．that D．/20．—Iwasintendedtototheconcertwithyouthisweekend,butIcan’tnow.—______.A．Bad B．That’srightC．Notatall D．You’rewelcome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）Whengoingthroughmajorlifechanges,likechangingcareers,IwouldchangethepeoplewithwhomIspentthemosttime.We’veallgonethroughperiodswhenthepeopleinourliveshavechanged—graduation,movingtoanewcity,gettinganewjob,joininganewclub,etc.Idon’tthinkIneedtoconvinceyoujusthowmuchinfluenceotherpeoplecanhaveoveryouridentity.Ifyou’veeverexperiencedamajorswitchinyourpeopleenvironment,thenyouknowthatyouchangeaswell.Mostpeopledon’tmakethesechoicesconsciouslythough.Youmightconsciouslydecidetospendmoretimewithacertainfriend,oryoumayasksomeoneoutonadatetobeginanewrelationship.Butfewpeoplechoosetheirexistingfriendshipsdeliberately.There’sno“gettingridofpeople”.Peoplearealwaysdroppingintoandoutofeachother’slives.Associationsgrowintofriendships,andfriendshipsfadeintoassociations.Youdon’tgetridofanyone.Thetruthisthatinordertomakeroomfornewpeopleandnewexperiences,youmayneedtoloosenupsomeofyourexistingconnections.Whataboutloyalty?Shouldn’tyoualwaysbeloyaltoyourfriends?Onceyouhaveaclosefriend,eveniftheirinfluenceonyouisslightlyharmful,shouldn’tyoustickbythem?Loyaltytoafriendsometimesmeanshavingtoletgo.Itmeansbeingloyaltotheirhighestandbestaswell.Ifsomeoneisdestroyinghishealthbysmoking,forexample,youaren’tshowingloyaltybysmokingrightalongwithhim.Trueloyallysometimesrequiresthatyoubreakdamagingconnections,getyourselfbackonsolidground,andthendecidewhatyoucanreallydotohelpyourfriend.Itcantakealotofcouragetotellsomeone,“I’msorry,butIcan’thaveyouinmylifeanymore."Buteventhoughthismightseemlikeaselfishactattimes,it’softenthebestthingfortheotherpersontoo.Ifarelationshipisholdingyoubackinsomeway,understandthatitisalsohurtingtheotherperson.Forexample,ifyouworkforaviolentboss,youracceptanceofthatsituationisconsideredtobesilentapproval,encouragingyourbosstocontinuetobehaveviolently.1、Whenexperiencingmajorlifechanges,peoplemay________.A．joinanewsocialcommunityB．influencetheirfriendsaroundC．choosetheirfriendshipspurposelyD．havetheirpeopleenvironmentchanged2、WhatcanbeconcludedfromParagraph3inthepassage?A．Everyonehasatleastonefriend.B．Friendshipstillexiststhoughthere’slessconnection.C．Itisunnecessarytomakenewfriends.D．Yououghttotreatyouroldandnewfriendequally.3、Whatistheauthor’sopinionontheloyaltytofriends?A．Neverbetrayyourclosefriendswhateverhappens.B．Correcttheirmistakeswhileyouguardtheirgoodness.C．Stickbyyourfriendseventhoughtheydoharmloyou.D．Breakupwithyourfriendsimmediatelyiftheysmoke.4、Howshouldwebehavewhenemployedbyaviolentboss?A．Weshouldacceptwhatwearetoldtodo.B．Weshouldstaysilentandbeinfavorofit.C．Weshouldbravelydisobeyhimifheiswrong.D．Weshouldgiveourbosscouragetocontinue.22．（8分）Pastimeisabi-monthlymagazineforcuriousyoungminds.Manyofthetopicswewriteaboutwon’tbecoveredintheclassroom.Allthearticlesarewritteninalivelystyle,andeachoneispairedwithdrawingsbysomeofthecountry’smosttalentedartists.◆Historyfocusesonarchaeological(考古的)sitesaroundtheworldwherearchaeologistsworktounearthimportantfinds.◆Worldincludesstoriesaboutdailylife,folktales,historyandtraditionsofthepeopleandplaces.◆Sportincludesnutritiontips,informationaboutup-and-comingyoungathletes,andsportsevents.◆Artstimulatesachild’sculturallife,fromfilmtotheatrethroughtowritingandmusic.Ontopofallthat,Pastimeispackedwithitemstostimulateayoungster’simagination,includingpagesofpuzzlesandastep-by-stepguidetocreatingtheirownimpressive-lookingdrawings.Ineveryissue,wereviewthelatestbookstopauthorswriteforyoungsters.TherearealsoshortworksoffictionwrittenespeciallyforPastimebysomeofourbestwriters.Weknowthatchildrenatthisagearedealingwithmanyemotionsandsometimesdifficultfeelings,sowehaveapersonaladvicepagetoreplytoquestionsdealingwithpersonalandmoralproblems.Unlikemanyoftoday’sthrowawaycomics,Pastimeiswrittenanddesignedtobekeptandtreasured.Weknowchildrenlovegoingonline—butwealsoknowhowmuchtheyenjoyholdingaprintedmagazineintheirhandsandtheexcitementtheygetwheneachnewissuedropsthroughtheletterboxpersonallyaddressedtothem.SubscriptionPastimeispublishedsixtimesayear.Anannualsubscriptioncostsjust￡20andmakesagreatgiftforanychildagedeighttotwelve.Toorderbyphone:Dial1-800-821-0156anduseOfferCodeWEBSAVE86forprint-onlysubscriptions.Youcancancelatanytimeformagazinesthathaven’tbeenshippedyet.1、Accordingtothepassage,themagazineispublished______.A．everymonthB．everytwomonthsC．threetimesamonthD．sixtimesamonth2、Ifareaderisinterestedinfestivals,hecanread______.A．History B．WorldC．Sport D．Art3、Whatdoesthemagazineprovide?A．Photosoftalentedartists.B．Storiescreatedbychildren.C．Suggestionsonreaders’problems.D．Bookreviewswrittenbystudents.4、Howdothechildrenreacttotheprintedmagazine?A．Favorable. B．Critical.C．Unconcerned. D．Confused.5、SubscribersofPastimeneedtoknowthatthemagazine______.A．offerselectroniccopiesB．costs￡20foreachcopyC．isforkindergartenchildrenD．canbecancelledbeforeshipping23．（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）Asanyplanepassengerwillconfirm,acryingbabyisalmostimpossibletoignore,nomatterhowhardyoutry.Nowscientistsbelievetheymayhaveworkedoutwhy.Ababy’scrypullsattheheartstrings(扣人心弦）inawaywhileothercriesdon’t,researchersfound.Researchersfoundthatababy’scrycantriggeruniqueemotionalresponsesinthebrain,makingitimpossibleforustoignorethem—whetherweareparentsornot.Othertypesofcries,includingcallsofanimalsingreatpain,failtogetthesameresponse…suggestingthebrainisprogrammedtorespondspecificallytoababy’scry.AteamofOxfordUniversityscientistsscannedthebrainsof28menandwomenastheylistenedtoavarietyofcallsandcries.After100millisecondsroughlythetimeittakestoblink(眨眼)—twopartsofthebrainthatrespondtoemotionlitup.Theirresponsetoababy’scrywasparticularlystrong.Theresponsewasseeninbothmenandwomen—eveniftheyhadnochildren.ResearcherDrChristineParsonssaid,“Youmightreadthatmenshouldjustnoticeababyandstepoveritandnotseeit,butit’snottrue.Thereisaspecialprocessinginmenandwomen,whichmakessensefromanevolutionary(演化的）viewthatbothmenandwomenwouldberespondingtothesecries.”Thestudywasinpeoplewhowerenotparents,yettheyareallrespondingat100mstotheseparticularcries,sothismightbeafundamentalresponsepresentinallofusregardlessofparentalstatus.FellowresearcherKatieYoungsaiditmaytakeabitlongerforsomeonetorecognizetheirownchild’scriesbecausetheyneedtodomore“fine-grainedanalysis”.Theteamhadpreviouslyfoundthatourreactionsspeedupwhenwehearababycrying.Adultsperformedbetteroncomputergameswhentheyheardthesoundofababycryingthanaftertheyheardrecordingsofadultscrying.1、Ababy’scryisdifficulttoignorebecauseit.A．keepsoncryingB．criesharderthanadultsC．causespeoplegreatpainD．makespeoplefeelstrongemotions2、Theunderlinedword“trigger”inParagraph2probablymeans“”A．removeB．avoidC．causeD．cure3、WhatmayChristineParsonsagreeto?A．Almosteveryonemakescertainresponsetoababy’scry.B．Acryingbabymakesnosensetopeoplewithoutchildren.C．Menpaylessattentiontoacryingbabythanwomen.D．Parentscanhardlyrecognizetheirownbabies’cries.4、What’sthemainideaofthetext?A．Whyyoucan’tgetababy’scryoutofyourhead.B．Howtorecognizedifferentbabies’cries.C．Whyababyiseasyandlikelytocry.D．Howtopreventababycrying.25．（10分）Youmayhaveexperiencedtheannoyanceofbeingfinedbecauseofparkingillegallyorfindingyourcartowedaway(拖走)afterleavingitparkedsomewhereforacoupleofminutes.Butnowahigh-techcarstickerthat’sdesignedtobestucktoacar’swindscreencouldhelpmotoristsavoidsuchasituation.TheTowStopstickersendsatextmessagetoadriverwhentouchedbyatrafficpoliceman,toallowmotoriststosendareplyandgivethemtimetomovetheircarsimmediately.Frankfurt-basedITconsultant,DanielKalliontzis,cameupwiththeideaandisraisingmoneytoputhis£43stickerintoproduction.Carownerscanputthestickerinsidetheircar’swindscreen,havingsetitupwithkeyinformation,suchastheirphonenumber.Theslimdesignwillincludeasensor(传感器)that,whentouchedbyatrafficpoliceman,willsendatextmessagewarningadriverofapossiblefine.Thedrivercouldthentypeareplyforthepolicemanusingasmartphone,whichwillappearonthesticker’sscreen.Thesmartstickersystemwillrelyonthegoodwilloftrafficpolicemenandinaway,aGermanlaw.Thelawstates:anofficerhastochoosethemostefficientandinexpensivewayforthecarownertoremovethevehicle.Itcouldbecheaperforthegovernmenttocallthedriverthantotowhiscar.MailOnlineaskedtheDepartmentofTransportwhetherthestickercouldbeusedintheUKinasimilarway.Aspokesmansaid,“InEnglandthereisnolegaldutytowarnthemotoristbeforeissuingtheticket.However,apolicemandoeshavethediscretionnottoissueaticketifhedoesn’tthinkthesituationisthatbadorhejustwantstoissueawarning.”Sofar,Mr.Kalliontzishasraisedjustover£2,362ofhis£39,381goal.Ifhemanagestoraisethemoney,thestickerswillbeshippedinJune2015.Butitappearsthatcarownersusingthesmartsystemcouldgetsomeunnecessarywarningmessages,becauseanyonecouldtouchthesmartsticker.1、Theauthorwrotethethirdparagraphto_______________.A．explainhowasmartcarstickerworksB．advisedriverstobuyacarstickerC．showtheimportanceofasensorD．telldrivershowtoparkacar2、WemayinferfromthetextthatinBritain_______________.A．carownersdon’thavetoworryaboutaparkingticketB．smartcarstickerswouldn’tworkaswellasinGermanyC．trafficpolicemenprefertocalladriverratherthantowhiscarD．theDepartmentofTransportthinkshighlyofsmartcarstickers3、Theunderlinedword“discretion”inParagraph5canbestbereplacedby“___________”.A．troubleB．pressureC．freedomD．opportunity4、Whatwouldbethebesttitleforthetext?A．DanielKalliontzis-agreatinventor.B．Environment-friendlycarstickers.C．ParkingsystemsinEurope.D．Endoftheparkingticket?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）ALettertoAugustPriscillaandIwroteournewly-borndaughterAugustaletterabouttheworldwehopeshegrowsupin,andalsohopingshedoesn’tgrowuptoofast.DearAugust,Welcometotheworld!YourmomandIaresoexcitedtoseewhoyouwill1.Whenyoursisterwas2,wewrotealetterabouttheworldwehopedsheandnowyouwillgrowupin-aworldwithbettereducation,3diseases,strongercommunities,andgreaterequality.Your4shouldlivebetterlivesthanours,andwehavea(n)5todoourparttomakethathappen.6headlinesoften7what’swrong,westillbelievethese8trendswillwinout.We’re9aboutyourgenerationandthefuture.But10writeaboutgrowingup,wewanttotalkabout11.Childhoodismagical.Youonlygettobeachildonce,sodon’tspendit12toomuchaboutthefuture.We’lldoeverythingwe13canto14theworldisabetterplaceforyouandallchildreninyourgeneration.Theworldcanbeaseriousplace.That’swhyit’s15tomaketimetogooutsideandplay.Youwillbe16whenyou，reolder,soIhopeyoutaketimeto17alltheflowersandputalltheleavesyouwantinyourbucketnow.Ihopeyousleepsoundlyandtakefrequent18.AndIhopeeveninyour19youcanfeelhowmuchweloveyou.August,weloveyousomuchandwe’resoexcitedtogoonthis20withyou.Wewishyoualifeofjoy,loveandthesamehopeyougiveus.Love,MomandDad1、A．meetB．knowC．becomeD．recognize2、A．happyB．bornC．puzzledD．excited3、A．rareB．lessC．incurableD．fewer4、A．friendsB．cousinsC．generationD．classmates5、A．responsibilityB．concernC．satisfactionD．experience6、A．SinceB．WhileC．BecauseD．But7、A．dependonB．sticktoC．holdonD．focuson8、A．negativeB．normalC．positiveD．reasonable9、A．optimisticB．particularC．curiousD．concerned10、A．ratherthanB．onpurposeC．bychanceD．insteadof11、A．neighborhoodB．childhoodC．friendshipD．relationship12、A．knowingB．complainingC．arguingD．worrying13、A．likelyB．occasionallyC．graduallyD．possibly14、A．makesureB．believeinC．figureoutD．buildup15、A．perfectB．difficultC．importantD．comfortable16、A．energeticB．busyC．eagerD．patient17、A．smellB．touchC．spotD．taste18、A．tasksB．picturesC．napsD．yawns19、A．realityB．dreamsC．futureD．smile20、A．vacationB．goalC．eventD．adventure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）语法填空It'scommontoseefooddeliveryworkersridingelectricbikesinahurrythroughbigcitiesinChina.Someofthemevenrisk1．(run)redlightstodelivertheirmealsintime.However,suchcarelessbehavioroftencausesseriousproblems.Thereasonfortheriseofsuchacarelessbehavioristhatthereis2．largedemandforfooddeliveryworkers,andmanycompaniesofferhighsalaries3．(attract)newworkers.Infact,fooddeliveryworkersareoftenunderhigh4．(press)fromtheiremployers.Theyfacecompanyfinesfordeliveringfoodlate.Moreover,themoreorderstheytake,themoremoneytheycanearn,5．leadstosomeworkerschecking6．(they)mobilephonesforneworderswhiletheyareridingtheirbikesWhilemostcompaniesrequiredeliveryworkerstofollowtrafficrules,itremainsaproblemwhethertheserequirementsandrulesare7．(strict)obeyedTosolvetheproblem,somecities8．(take)actionsincelastyear.Shanghairequiredthedeliveryworkersshould9．(train)ontrafficrulesandsafety.NowinShenzhen,ifadeliveryworkergetscaughtbreakingtrafficrulesmorethantwice,heorshewillbebanned10．drivingfooddeliveryvehiclesforawholeyear.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（共10小题；每小题1分，满分10分）Throughouthistorymanhaschangedtheirphysicalenvironmentinordertoimprovehiswayoflife、Withthetoolsoftechnologythathehaschangedmanyphysicalfeaturesoftheearth、Thus,man’schangestothephysicalenvironmenthasnotalwayshadbeneficialresults、Today,pollutionoftheairandwaterisaincreasingdangertothehealthoftheplanet、Likeweknow,massivedestructionofenvironmenthasbroughtinnegativeeffectsandevenformedagreatthreattoman’sexistence、Therefore,effectivemeasuresshouldbetakenandlawspasstoconserveenvironment、Otherwise,maniscertaintosuffertheseriousconsequencescausingbythislackofcareforhislivingsurroundings、第二节书面表达（满分25分）29．（25分）假设你叫李华，你的美国朋友Mike正在北京大学学习汉语，他对中国古诗词很感兴趣。中央电视台将举办《中国诗词大会》比赛(ChinesePoetryContest)，请email他告知此事，主要内容包括：1、节目简介；2、建议并鼓励他参加；3、预祝他取得好成绩。注意：1、词数100左右；2、可以适当增加细节,以使行文连贯。DearMike,______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

参考答案第一部分（共20小题，每小题1.5分，满分30分）1、A2、A3、D4、B5、C6、D7、C8、D9、D10、D11、C12、C13、D14、B15、D16、A17、B18、A19、C20、A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、D2、B3、B4、C22、1、B2、B3、C4、A5、D23、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.Thejunkvariesfromtinypiecesofpaintchippedoffrocketsto