陕西省榆林市榆阳区二中2025届高考考前提分英语仿真卷含解析

陕西省榆林市榆阳区二中2025届高考考前提分英语仿真卷注意事项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．Webelieve________youhavebeendevotedto________naturallyofgreatnecessity.A．that;being B．allthat;beC．thatall;are D．what;is2．Dellaturnedallofherpocketsinsideoutonlytofind$1.87buyJimapresentforChristmas.A．withwhatto B．withthatshecan C．inwhichto D．withwhichto3．Manymemoriesofoldtimeswerebytheconversationwehadtogetherthatevening.A．calledup B．turnedup C．takenup D．keptup4．Markdriveshiscartoofastand,what’smore,verycarelessly,worrieshismother.AasA．what B．it C．which5．---I’llsendyouthesignedcontractpersonallythistimetomorrow.---Sorry,I______ameetingthen.A．amattending B．attendedC．haveattended D．willbeattending6．makesmestressedistheentranceexaminationiscomingnearerandnearer.A．It;what B．What;that C．What;what D．That;that7．TheartistissaidduringtheproductionandthusapiratedvideowassoldineverypartofKenya.A．tobecheated B．beingcheatedC．tohavebeencheated D．havingbeencheated8．Itissodifficultaquestion_______noneofthekidscouldworkitout.A．as B．that C．which D．X9．—CouldyoucheckmylisttoseeIhaveforgottenanything?—Noproblem.A．whetherB．whichC．thatD．what10．Thehalloftheschoolcanonethousandpeople.A．sit B．seat C．besat D．beseated11．ThefarmersaidthePLAmencametorescuetimelywhenthey_____inthesnowstorm.A．weretrappingB．werebeingtrappedC．aretrappingD．arebeingtrapped12．Somewomenagoodsalaryinajobinsteadofstayinghome，buttheydecidednottoworkforthesakeofthefamily．A．mustmake B．shouldhavemade C．wouldmake D．couldhavemade13．Thefinancialdamageisnothingcomparedtowhat_______iftherehadbeenchildrenintheclassroomintimeofthefire.A．wouldhappen B．happenedC．wouldhavehappened D．shouldhavehappened14．--Iapologizefornotbeingabletojoinyoufordinner.--_________________.We'llgettogetherlater.A．Goahead B．That'srightC．Nottoworry. D．Don'tmentionit15．Look!Here’saphoto______inmyclassroomatprimaryschool.Canyourecognizemeinit?A．taken B．takingC．totake D．beingtaken16．—Whatamess!Youarealwayssolazy!—I’mnottoblame,mum.Iam________youhavemademe.A．how B．what C．that D．who17．—YourcarshouldbereadynextTuesday．—Wewere________hopingyou'dbeabletodoitbythisFriday．A．still B．rather C．always D．even18．Thebookisnowoutofprint,______itcaneasilybeborrowedfromlibraries.A．andB．forC．soD．but19．---Ihearyou’llcancelallyourplansandappointments.Why?---They_____mylife.Ijustcan’tstop.A．control B．controlledC．havecontrolled D．havebeencontrolling20．—WillUnclePetersoncometomybirthdaypartytomorrow?—Pityhe______toZimbabweasavolunteerteacher.A．wassentB．hasbeensentC．hadbeensentD．wouldbesent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）Ithurtstokeepsecrets.Secrecy(保密)isassociatedwithlowerwell-being,worsehealth,andlesssatisfyingrelationships.Researchhaslinkedsecrecytoincreasedanxiety,depression,symptomsofpoorhealth,andeventhemorerapidprogressionofdisease.Thereisaseeminglyobviousexplanationfortheseharms:hidingsecretsishardwork.Youhavetowatchwhatyousay.Newresearch,however,suggeststhattheharmofsecretsdoesn’treallycomefromthehidingafterall.Therealproblemwithkeepingasecretisnotthatyouhavetohideit,butthatyouhavetolivewithit,andthinkaboutit.Tobetterunderstandtheharmsofsecrecy,researchersfirstsetouttounderstandwhatsecretspeoplekeep,andhowoftentheykeepthem.Theyfoundthat97%ofpeoplehaveatleastonesecretatanygivenmoment,andpeoplehave,onaverage,13secrets.Acrossseveralstudies,researchersaskedparticipantstoestimatehowfrequentlytheyhidtheirsecretduringconversationswithothers,andalsohowfrequentlytheythoughtaboutthesecretoutsideofsocialinteractions.Theyfoundthatthemorefrequentlypeoplesimplythoughtabouttheirsecrets,thelowertheirwell-being.Followingupthisresearch,anewpaperrevealswhythinkingaboutsecretsissoharmful.Turningthequestionaround,theconsequencesoftellingsecretsareexamined.Researchersfoundthatwhenapersonrevealsasecrettoathirdparty,itdoesnotreducehowoftentheyhavetohidethesecretfromotherswhoarestillkeptinthedark.Rather,itreduceshowoftentheirmindwanderstowardthesecretinirrelevantmoments.Therefore,ifyouchoosetostillkeepsomethingsecret,talkingtoanotherpersoncanmaketheworldofdifference.Secretsdon’thavetohurtasmuchastheydo.1、Whichisnotoneoftheharmsofkeepingsecrets?A．Beingphysicallysick. B．Mentalproblems.C．Harmedrelationships. D．Hidingsomewhere.2、Whyiskeepingsecretssoharmful?A．Becauseyoumusthidethem.B．Becauseyouoftenthinkaboutthem.C．Becauseit’sdifficulttokeepsecrets.D．Becauseyoumustwatchwhattosay.3、Howcanpeoplereducetheharmofkeepingsecrets?A．Byworkinghard. B．Bykeeping13secrets.C．Bythinkingaboutthesecrets. D．Bytellingsecretstoathirdperson.4、Whichisthetextprobablytakenfrom?A．Anadvertisement B．AresearchreportC．Abiologytextbook. D．Atravelbrochure.22．（8分）Thebookingnotesoftheplay“TheAgeofInnocence”:Price:$10DISCOUNTS;Saver:$2offanyseatbookedanytimeinadvanceforperformancesfromMondaytoThursday.Saversareavailableforchildrenunder16,over60sandfull-timestudents.Supersaver:Half-priceseatsareavailableforpeoplewithdisabilitiesandonecompanion.Itisadvisabletobookinadvance.Thereisamaximumofeightwheelchairspacesavailableandonewheelchairspacewillbehelduntilanhourbeforetheshow.Standby:Bestavailableseatsareonsalefor$6fromonehourbeforetheperformanceforpeopleeligible(suitable)forSaverandSupersaverdiscountsandthirtyminutesbeforeforallothercustomers.GroupBookings:Thereisatenpercentdiscountforpartiesoftwelveormore.School:Schoolpartiesoftenormorecanbook$6standbyticketsinadvanceandwillgeteverytenthticketfree.Pleasenote:Weareunabletoexchangeticketsorrefund(退款)moneyunlessaperformanceiscancelledduetounforeseencircumstances.BOOKING:Therearefoureasywaystobookseatsforperformance:-Inperson:TheBoxOfficeisopenMondaytoSaturday,10a.m.-8p.m.-Bytelephone:Ring01324976toreserveyourticketsortopaybycreditcard(Visa,MasterCardandAmexaccepted).-Bypost:SimplycompletethebookingformandreturnittoGlobalTheatreBoxOffice.-Online:Completetheon-linebookingformatwww.Satanfiedtheatre.com.1、Accordingtothenotes,whocanget$2off?A．A55-year-oldwoman.B．An18-year-oldteenager.C．A20-year-oldfull-timecollegestudent.D．ThepeoplewhobooktheticketsonFridays.2、WhichofthefollowingisNOTtrueaccordingtothepassage?A．Thereareonly8wheelchairspacesinthetheatre.B．Agroupof12personscanget10percentdiscount.C．Theaudiencecan’trefundmoneyiftheperformanceisonshow.D．Aschoolpartyof15studentsshouldpay$90forthestandbytickets.3、Whatkindofticketsarethecheapest?A．Thestandbyticketsforschoolpartiesoftenormore.B．Theticketsforsaverdiscount.C．Theticketsforgroupbooking.D．Thestandbytickets.23．（8分）Long,longagotherewerealotofdonkeys.Thedonkeysworkedhardeveryday.Theyhadnotimetoplayortorelax,buttheyneverfeltappreciatedfortheworktheydid.Onedaytwodonkeysgotbored.Theywantedtoliveacomfortablelife,sothedonkeyswenttoseeawiseoldman.Theytoldhimtheirproblem.Thewiseoldmanagreedtheyworkedtoohard,andhewantedtohelpthedonkeys.“Ihaveanidea,”hesaid.“Whatisyouridea?”askedthedonkeys.“Iwillpaintyouandnoonewillknowyouaredonkeys,”saidtheman.Themanwentofftofindsomepaintandhereturnedinjustamatterofminutes.Hehadtwopotsofpaints.Onepotwasfilledwithwhitepaint,andtheotherblackpaint.Theoldmanfirstpaintedthemwhite,andthenpaintedstripes(斑纹)overthewhitepaint.Whenhefinished,thedonkeysdidnotlooklikedonkeysatall.“Younolongerlooklikedonkeys,”theoldmansaid.“Everyonewillbefooled.Iwillcallyousomethingelse,zebras.”Thezebraswenttoafieldtoeatgrass.Nowtheydidnothavetowork.Soon,otherdonkeyssawthezebras.Theyaskedthezebraswheretheycamefrom.Whenthezebrastoldthedonkeystheirsecret,thedonkeysallrushedtoseetheoldman.“Pleasemakeusintozebras,too,”theypleaded.Sothewiseoldmanpaintedmoredonkeys.Ashedid,moreandmoredonkeyscame.Theoldmancouldnotpaintfastenough.Soonthedonkeysbecameimpatient.Theybegantokickabout,andtheyknockedoverthepaintpots.Therewasnomorepaint.Thepainteddonkeysranofftobecomezebras.Theunpainteddonkeys,becauseoftheirimpatience,hadtoreturntowork.1、Thetwodonkeyswenttoseeawiseoldmaninorderto________.A．askhimforhelpB．becomepatientC．changeintozebrasD．haveashortrest2、Whatdoestheunderlinedword“pleaded”(inParagraph9)mean?A．relaxedB．knockedC．beggedD．agreed3、Whatfinallyhappenedtotheimpatientdonkeys?A．Theywerestilldonkeysworkinghardallthetime.B．Theylookedforanotherwisemantopaintthem.C．Theywonpraisefortheworktheydid.D．Theyhatedthezebrasandfoughtwiththem.4、Whatcanweinferfromthepassage?A．Bothdonkeysandzebrashadtoworkhard.B．Beingpatientisveryimportant.C．Thewiseoldmanwaskilledbytheseimpatientdonkeys.D．Thereisalwaysagoodwaynottoworkhard.24．（8分）Inventor!Canyoupatentandprofitfromyouridea?Wehavebeenassistinginventorssince1975.Fullrangeofpatentingandmarketingservices.ConfidentialityguaranteedAmericanInventorsCorp.Callforfreeinformation:1-800-338-5656orvisitInventor!Canyoupatentandprofitfromyouridea?Wehavebeenassistinginventorssince1975.Fullrangeofpatentingandmarketingservices.ConfidentialityguaranteedAmericanInventorsCorp.Callforfreeinformation:1-800-338-5656orvisit*Parents*Canyouaffordtoraiseyourhearingimpairedchildwithouttheinsightsthishighly-valuedbookhastooffer?Makelifeeasierforyouandyourchild!BradfordPublicationsForinformation:1-800-354-2760orvisitEarnupto＄25,000ayearasaMedicalTranscriptionist!Noexperienceisneeded.Workthehoursyouchoose.Trainathomeinyoursparetime.Themedicalprofessionneedsskilledtranscriptionists.Soifyoucantype,orarewillingtolearn,wecantrainyoutoworkathomedoingmedicaltranscriptionsfromtapesdictatedbydoctors.Getfreeinformation!At-HomeProfessionCorp.CallTollFree1-800-475-0100orvisitwww.athome.comGlobeInsuranceCompanySince1951,Globehasgrowninfinancialstrengthandreputation.Withover2.8millionpoliciesinforce.Globeiscommittedtoprovidingaffordablelife,healthandaccidentinsurancefortheentirefamily.Itonlycosts＄1tostartyourLongLifecoverage.GlobeInsuranceCompanyCallTollFree,SevenDaysAWeek,24-hoursADay.1-800-358-1945orvisitGlobeInsuranceCompanySince1951,Globehasgrowninfinancialstrengthandreputation.Withover2.8millionpoliciesinforce.Globeiscommittedtoprovidingaffordablelife,healthandaccidentinsurancefortheentirefamily.Itonlycosts＄1tostartyourLongLifecoverage.GlobeInsuranceCompanyCallTollFree,SevenDaysAWeek,24-hoursADay.1-800-358-1945orvisit605、Thebesttitleofthe3rdadvertisementwouldbe.A．TrainingatHome B．LearningatHomeC．RecordingWork D．WorkingatHome1、Accordingtotheinformationabove,ifyourchildhashearingproblems,youcanturnto________.A．At-HomeProfessionCorp. B．GlobeInsuranceCompanyC．BradfordPublications D．AmericanInventorsCorp.2、Fromtheadvertisementsabove,wecanlearnthat.A．GlobeInsuranceCompanyhasahistoryof51yearsB．asamedicaltranscriptionist,youmayearn＄25,000amonthC．BradfordPublicationsoffersatreatmenttohearingimpairedparentsD．youcanvisitwhenyouinventanewmodelofhearingaid25．（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）III．完形填空（共20小题；每小题1.5分），满分30分）阅读下面短文，掌握其大意，然后从36-55各题所给的四个选项（A，B，C和D）中，选出最佳选项。Oneday,apoorboywhowastryingtopayhiswaythroughschoolbysellinggoodsfromdoortodoorfoundthatheonlyhadonedimeleft.Hewashungrysohedecidedto21foramealatthenexthouse.However,helosthisnerve22alovelyyoungwomanopenedthedoor.Insteadofamealheaskedforadrinkofwater.Shethoughthelooked23soshebroughthimalargeglassofmilk.Hedrankit24,andthenasked,“HowmuchdoIoweyou?”“Youdon’towemeanything,”she25.“Motherhastaughtmenevertoacceptpayfora_26.”Hesaid,“ThenIthankyoufromthebottomofmyheart.”AsHowardKellyleftthathouse,henotonlyfeltstronger27,butitalsoincreasedhisfaithinGodandhumanrace.Hewasabouttogiveupandquitbeforethispoint.Yearslatertheyoungwomanbecamecriticallyill.Thelocaldoctorswerebaffled.Theyfinallysenthertothebigcity,wherespecialistscanbecalled28tostudyherraredisease.Dr.HowardKelly,now29,wascalledinfortheconsultation.Whenheheardthenameofthetownshecamefrom,astrangelight30hiseyes.Immediately,he31andwentdownthroughthehospitalhallintoherroom.32inhisdoctor’sgownhewentintoseeher.He33heratonce.Hewentbacktotheconsultationroomand34todohisbesttosaveherlife.Fromthatdayon,hegave35__attentiontohercase.Afteralong36thebattlewaswon.Dr.Kelly37thebusinessofficetopassthefinalbilltohimforapproval.Helookedatitandthenwrotesomethingontheside.Thebillwassenttoherroom.Shewasafraidtoopenitbecauseshewas38thatitwouldtaketherestofherlifetopayitoff.Finallyshelooked,andthenoteonthesideofthebillcaughther39.Shereadthesewords…“Paidinfullwithaglassofmilk.”Dr.HowardKellyTearsofjoyfloodedhereyesasshe40silently.“Thankyou,God.Yourlovehasspreadthroughhumanheartsandhands.”1、A．callB．makeC．begD．prepare2、A．whileB．whenC．thoughD．unless3、A．thirstyB．lazyC．tiredD．hungry4、A．slowlyB．unexpectedlyC．steadilyD．hurriedly5、A．announcedB．shookC．repliedD．doubted6、A．rewardB．kindnessC．handD．value7、A．physicallyB．mentallyC．normallyD．properly8、A．upB．forC．onD．in9、A．richB．famousC．observantD．vivid10、A．fixedB．consultedC．filledD．concentrated11、A．roseB．raisedC．gotD．left12、A．WornB．HavingC．puttingD．Dressed13、A．recognizedB．knewC．sparedD．regained14、A．desiredB．declaredC．determinedD．declined15、A．specialB．ordinaryC．normalD．no16、A．decisionB．preparationC．struggleD．debate17、A．orderedB．requestedC．confusedD．compressed18、A．negativeB．uncertainC．positiveD．obvious19、A．presentationB．preferenceC．attentionD．arrangement20、A．praisedB．pretendedC．pressedD．prayed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）Onceuponatime,thereweretwolittleboys,JackandTom,who1．(raise)inanorphanage.Jackhadalwayswishedhecouldflylikeabird.AndTom,unabletowalkproperly,was2．(eagerness)towalkandrunlikeotherchildren.OnedayJackcameuponapark3．hesawTomplayinginthesandbox.Heranoverto4．(he)andaskedifheeverhadwantedtoflylikeabird.“No,”saidTom,“5．Ihavewonderedwhatitwouldbeliketowalkandrunlikeothers.”Thetwolittleboysplayedfor6．(hour).ThenamancamewithawheelchairtopickTomup.Jackranovertothemanandwhisperedsomething7．hisear.AndthenheranovertoTomandsaid,“IwishIwereable8．(make)youwalkandrun.ButIcan’t.However,thereissomethingthatIcandoforyou.”JackturnedaroundandtoldTomtoslideupontohisback.Hethenbegantorunacrossthegrass,9．(carry)Tomonhisback.Soonthewindjustwhistledacrossthetwolittleboy’sfaces.Flapping(摆动)hisarmsupanddowninthewind,Tomyelled10．(cheerful),“I’MFLYING.I’MFLYING!”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。Aseverybodyknow,parentsareworriedtoomuchabouttheirchild,especiallywhentheyoungmeetwithchallenges、Sodomyparents、TheyareevenmorenervousthanIwhenaimportanttestiscoming、Ihavebeenthinkingabouttalkedtothem、I’llletthemknowIhaveagoalandwillworkhardtoachievethem、WhentheyareconvincingthatI’llberesponsibleforthatwhatIshoulddo,theysurelywon’tfeelworried、Pleasekeepinmindthatourparentsloveusunconditional、Ihopemythoughtcanbehelpfultoyouindealingtherelationshipwithyourparents、第二节书面表达（满分25分）29．（25分）假定你是李华，下周六下午四点你校图书馆报告厅将有一场关于饮食健康的讲座，请给你的外教David写封邮件，邀他一同前往。内容包括：1.时间、地点；2.讲座内容：中餐特点和饮食建议；3.邀请理由。注意：1.词数100左右；2.可以适当增加细节，以使行文连贯。DearDavid,Howareyourecently?______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________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、D2、D3、A4、D5、D6、B7、C8、B9、A10、B11、B12、D13、C14、C15、A16、B17、B18、D19、D20、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、D2、B3、D4、B22、1、C2、D3、A23、1、A2、C3、A4、B24、605、D1、C2、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.Themajorproblemwiththespacetrashisthatitmayhitworkingsatellitesanddamagetravelingspacecraft(飞船).Moreover,piecesofjunkmaycollide（碰撞）witheachotherandbreakintopieceswhichfallbacktotheEarth.Toavoidthis,scient