2025屆內(nèi)蒙古開來中學(xué)英語高三第一學(xué)期期末聯(lián)考試題含解析

2025屆內(nèi)蒙古開來中學(xué)英語高三第一學(xué)期期末聯(lián)考試題注意事項(xiàng)：1．答卷前，考生務(wù)必將自己的姓名、準(zhǔn)考證號(hào)填寫在答題卡上。2．回答選擇題時(shí)，選出每小題答案后，用鉛筆把答題卡上對(duì)應(yīng)題目的答案標(biāo)號(hào)涂黑，如需改動(dòng)，用橡皮擦干凈后，再選涂其它答案標(biāo)號(hào)?；卮鸱沁x擇題時(shí)，將答案寫在答題卡上，寫在本試卷上無效。3．考試結(jié)束后，將本試卷和答題卡一并交回。第一部分（共20小題，每小題1.5分，滿分30分）1．Iwillgiveyousomearticleswhichyoucanwhenyouwritethereport.A．referto B．a(chǎn)pplyto C．leadto D．talkto2．Itwas______wewerereturninghome______Irealizedwhatagoodfeelingitwastohavehelpedsomeoneintrouble.A．when;before B．when;thatC．before;where D．how;that3．-----Hi,Mark.Howwasthemusicalevening?-----Excellent!AlesandAndyperformed_________andtheywonthefirsprize.A．skillfully B．commonly C．willingly D．nervously4．—NextMondayismybirthday.—Isthatso?______A．Ican’tbelievemyears.

B．I’msogladtohearthat.C．Whatpresentsdoyouwant?

D．Manyhappyreturnsoftheday!5．--Ipreferacomputermadeinyourcompany,butImayneedsomemoreinformationabouttheproduct.--______.A．Thankyou B．It’sapleasureC．Youarewelcome D．Atyourservice6．Don’tletthechildwhois________gotoschool．A．soyoungasto B．notoldenoughto C．notoldenough D．tooyoungto7．InmanyhomesintheUK,thefirstperson_______hastomaketeaforthefamily.A．wakingup B．towakeupC．wokeup D．wokenup8．Peterhaspreviousexperience,______Ithinkhe’stherightpersonforthejob.A．orB．butC．forD．so9．Timeispressing．Youcannotstartyourtask_____soon．A．too B．very C．so D．a(chǎn)s10．—Hey!EveryoneintheofficewasatthedinnerpartyinhonorofMr.Charlesexceptyou.Whathappened?—I______afterMike,mycolleague.Hewasbadlyill.A．havelookedB．waslookingC．wouldlookD．hadlooked11．—Wewouldappreciateitifyoucouldstayforlunch.—Sorry,I.Ihaveanotherappointment.A．won’t B．shan’t C．can’t D．mustn’t12．TheteachercalledTomtohisofficebecausehewascaughtintheexam.A．tocheat B．cheating C．cheated D．cheat13．Whilehisapproachwasacomplete________fromestablishedpractices,theresultwassatisfactory.A．separation B．prohibition C．departure D．judgment14．Thenewsupermarketannouncedthatthefirsttopurchasegoodsontheopeningday______________getabigprize.A．must B．willC．shall D．need15．DimashappearedonthestageofSinger2017,hisvoiceinstantlywonheartsofChineseaudience.A．AslongasB．AssoonasC．NowthatD．Eversince16．Theimportantthinginlifeistohaveagreataim,andthe________toachieveit.A．a(chǎn)cquisitionB．comprehensionC．determinationD．satisfaction17．Icouldnot________mytearswhenIsawthepictureofmyfatherworkingatthequakezone.A．bringInB．turnupC．takeoffD．holdback18．Everybodywastouched______wordsaftertheyheardhermovingstory.A．without B．beyondC．a(chǎn)gainst D．despite19．—WherewasI?—You________youdidn’tlikeyourjob.A．hadsaidB．saidC．weresayingD．hassaid20．Theinfrastructureofacountryis________makeseverythingrunwell,includingthingsliketransport,irrigation,electricityandschools.A．whichB．thatC．whereD．what第二部分閱讀理解（滿分40分）閱讀下列短文，從每題所給的A、B、C、D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。21．（6分）Thepursuitoflongevityhaslongbeenonpeople’sminds,promptinganabundanceofresearchontheeffectsoffoodanddietonthehumanlifespan.AccordingtorecentresearchfromtheUCIrvineInstitute,drinkingcoffeeandwinecouldhelpyoulivelonger.The90+Studyevaluatedmorethan1,600peopleovertheageof90fortheirlifestylehabitsandotherqualitiesthatmighthavecontributedtotheirlongevity.Participantswerevisitedeverysixmonths,whentheyweregivenvarioustests.Researchersalsocollectedinformationabouttheparticipants’diets,lifestyles,andmedicalhistories.Theyfoundoutthattwoofthehabitsthathelpedpreservelivesthemostaredrinkingalcoholandcoffee.“Ihavenoexplanationforit,”admittedDrClaudiaKawas,“butIdofirmlybelievethatmoderate(適度的)drinkingimproveslongevity.”Soshouldweallbedrinkingmorecoffeeandwine?Whilethatwouldbegreatnews,theresearchmaynotbeasdefinitiveasitseems.“Moststudiesaboutalcoholconsumption,includingThe90+Study,areobservational,sowecanonlysaythatsomethingaboutdrinkingisassociatedwithhealthandlongevity,”registereddietitianJenniferMarkowitztoldTheDailyMeal.“I’dbecurioustoseeifthecoffeeandalcoholdrinkerssharedotherimportanthabitsorlifestylefactorsthatmightalsoplayintotheirlongevity.”Inotherwords,itmightnotbethewineandcoffeethat’shelpingpeoplelivelonger,butthetwosubstancesdohavesomeconsiderablehealthbenefits.“Wineandcoffeearepackedwithantioxidants(抗氧化劑)whichareknowntoprotectourbodiesfromdamagecausedbyfreeradicals,”explainedregistereddietitianKeriGanstoTheDailyMeal.“Researchonantioxidantshasshownseveralheathbenefits,includingthepossibilitytheymaylowertheriskoftype2diabetes,improvecognitivefunction,decreasetheriskofdementia,andlowertheriskofheartdisease.”Moderatedrinkingcanbebeneficialaccordingtootherstudies—solongasit’smoderate.1、What’sthepassagemainlyabout?A．Antioxidantshavingapositiveeffectonthelifespan.B．Theeffectsoffoodanddietonthehumanlifespan.C．Advocatingdrinkingwineandcoffeeinourdailylife.D．Moderatedrinkinghelpingpeoplelivelonger.2、Theinformationwascollectedabouttheparticipantsinthe90+Studyexcept________.A．foodconsumptionB．lifestyleC．hobbiesD．medicalhistory3、Howcanthewineandcoffeebenefitpeople’shealth?A．Theyprovidepeoplewithessentialnutrition.B．Theyarerichinantioxidants.C．Theyprotectfreeradicalsinhumanbodies.D．Theycanbringrelieftopain.4、Whatcanweinferfromthepassage?A．Notallthepeopleparticipatinginthestudyareover90.B．Moststudiesaboutalcoholconsumptionarebasedonobservation.C．Over-drinkingcanalsobebeneficialaccordingtootherstudies.D．Antioxidantscancuretype2diabetes.22．（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（簡(jiǎn)報(bào)）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．a(chǎn)nythingtheflightstafftellyoutodoB．generalsafetyadviceC．walkingaroundtheplaneD．pouringhotdrinks3、WhichofthefollowingisNOTtrue?A．largerplaneshavemoresafetychecksandaresaferinanaccident.B．Take-offsaresaferonnon-stopflightsthanlanding.C．Everyaircraftisdifferent,sothesafetyproceduresmaybedifferent.D．Seatbeltsshouldbeworntoprotectagainstsuddenchange.4、Thebesttitleshouldbe.A．ThesafestwaytotravelB．AirsafetytipsC．Non-stopRoutesD．Howtotakeaplane23．（8分）JamesGross,apsychologyprofessoratStanfordUniversity,hasa13-year-olddaughterwholovesmathandscience.“Ithasn’toccurredtoheryetthat’sunusual,”hesays.“ButIknowinthenextcoupleofyears,itwill.”She’salreadybeingpulledoutofclasstodoadvancedthingswithacoupleofotherkids,whoareguys.Andassomeonewhostudieshumanemotionforaprocession,Grosssays,“Iknowastimegoeson,shewillfeelincreasinglylonelyasagirlwho’sinterestedinmathandscience,andbeatriskofnarrowingherchoicesinlifebeforefindingouthowfarshecouldhavegone.’’Gross’concernclearlyshowswhathasbeenatouchysubjectintheworldofscienceforalongtime:Whyaretherestillsofewwomeninscience,andhowmightthataffectwhatwelearnfromresearch?Womennowmakeuphalfthenationalworkforce,earnmorecollegeandgraduatedegreesthanmen,andbysomeestimatesrepresentthelargestsingleeconomicforceintheworld.Yetthegendergapinsciencepersists,toagreaterdegreethaninotherprofessions,particularlyinhigh-end,math-intensivefieldssuchascomputerscienceandengineering.AccordingtoUSCensusBureaustatistics,womeninfieldscommonlyreferredtoasSTEM(science,technology,engineering,mathematics)madeup7percentofthatworkforcein1970,afigurethathadjumpedto23percentby1990.Buttheriseessentiallystoppedthere.Twodecadeslater,in2011,womenmadeup26percentofthescienceworkforce.1、AccordingtoJamesGross,inthenearfuturehisdaughtermay.A．becomeagreatscientistB．feellonelyandhavefewerchoicesC．bepulledoutofclasswithsomeguysD．learnmathandsciencebetterandbetter2、Wecanlearnfromthetextthat.A．womenareclevererthanmenincollegeB．menrepresentthelargestsingleeconomicforceC．womenmakeupmorethan50%ofthenationalworkforceD．thenumberofwomengraduatingfromcollegeislargerthanthatofmen3、Howdoestheauthordevelopthelastparagraph?A．Byprovidingexamples.B．Bymakingcomments.C．Byfollowingtimeorder.D．Byexplainingtheprocess.4、Whichofthefollowingisthebesttitleforthetext?A．WhyItIsImportanttoGetMoreWomenIntoScienceB．JamesGross,ConfusionAboutHisdaughterC．SituationofWomenintheWholeCountryD．FutureofwomenintheWorkforce24．（8分）Despitehiskneeandfingerinjuries,KobeBryantignoreshispainsastheNBAseasonnears.HeisleadingtheLosAngelesLakersintheirattempttowinathirdNBAchampionshipinarow,astheydidatthebeginningofthecentury.TheLosAnglesLakerssuperstarhastheperfectrecordsincehisstartin1996.HehasfiveNBAchampionships,12NBAAll-StarsandagoldmedalattheBeijingOlympics.Butalongwiththeawards,therehaslongbeentalkaboutBryant.Peoplesayheisaselfishplayerwithonlyafewfriends.HewonthreeNBAchampionshiptitleswithShaquilleO’Neal,butratherthanbecomingfriends,theycouldn’tgetalongwellwitheachother.LakersCoachPhilJacksonstillremembersatalkheandBryanthad.“Italkedtohimalittlebitaboutleadershipandhisabilitytobealeader,andhesaidhewasreadytobeacaptain”JacksontoldESPN.“ButIsaidnoonewasreadytofollowhim.Bryant’spathofself-discoverytookhimLightyears.O’NeallefttheLakersin2004.Bryantwentontoleadtheteamtovictorylastyearandagainthissummer.Lastweek,NBArookies(新秀）votedBryanttheirfavoriteplayer.MarkMedina,sportsreporterwiththeLosAnglesTimeshasseenBryantgrow.“Kobehasbeenimprovinghisrelationshipwithteammatesandacceptsthatsometimeslessismore,”hewrote.“Hehaslearnedthathehastogivetogetbackinreturn.Andsohehasbecomeagiverratherthanademandingleader.Thathasbeengreatforhimandgreattowatch,”JacksontoldMedina.Bryanthasshownthroughtalentandhardworkthatotherscanfollowhislead.1、WhatcanweknowaboutKobeandO’Neal?A．Theywereinconflict.B．Theyweregoodfriends.C．Theyenviedeachother.D．Theyoftenhelpedothers.2、WhatcanwelearnfromJackson’swords?A．Hedidn’tlikeKobeorO’Neal.B．Kobehadnotalentforleadership.C．Kobe’sleadershipshouldbeimproved.D．Kobe’steammatespreferredO’Nealtohim.3、Kobedevelopedhisrelationshipwithhisteammatesby.A．invitingO'NealtocomebackB．learningtobecomeagiverC．winningthetrustofthecoachD．turningademandingleader4、Whatmaybethebesttitleforthepassage?A．Agrown-upNBAstarB．Ahard-workingNBAstarC．ThehighpraisefromKobe’scoachD．TherelationshipbetweentwoNBAstars25．（10分）Haveyoueverthoughtofquittingyourjobwhenyoufeelexhausted?Maybemostofyouwouldsay“yes”.Afteraparticularlybusyperiodatwork,IdecidedtogetawayfromitallbygoingonahikeinthemountainsinsouthernFrance.BeforeIleft,Ireadaninterestingstoryinamagazine.Itread,“Once,whileIwasridingonacrowdedbus,themansittingnexttomethrewhiscellphoneoutofthewindowwhenhisphonerang.Iwassurprised.Helookedatme,shrugged(聳聳肩)andlookedaway.Ihadnoideawhetheritwashisorstolenorwhetherheevenknewwhatacellphonewasornot,butheclearlywantedtobefreeofit,becauseitclearlytroubledhim.”Billionsofpeopleacrosstheworldusecellphones.Thoughcellphonesareawonderfulwayforcommunication,theyoftendotheexactopposite.Usingcellphonescanincreasestresswithinfamiliesandfriends.SowhenIrecentlyreturnedhome,Igotridofmycellphone.NowIgooutsidewithouttakingmyphonewithme.I’venoticedthingsinmyneighborhoodInevernoticedbefore,suchasgardens.I’vemetnewpeople,startedconversationswithneighborsIdidn’tspeaktobeforeandtalkedwithsomeofmyfriendsfacetofaceinsteadofchattingoverthephone.Insteadofkeepingmeofffromtheworld,stoppingusingmycellphonehashelpedmegetevenclosertomyfamilyandfriends.1、Accordingtothestory,themanonthebusthrewawayhiscellphonebecause.A．itdidn’tworkproperly B．itwasstolenfromsomeoneelseC．hedidn’tlikethephone’sstyle D．hedidn’twanttobebotheredbyit2、Wecanlearnfromthepassagethatcellphones.A．a(chǎn)retooexpensiveformanypeopleB．a(chǎn)reofnousetotheauthorC．canalsogetpeopleintotroubleD．canmakelifemoreinteresting3、Whatcanwelearnabouttheauthor?A．Hewantstoownagardennow.B．Healwayschattedwithhisneighbors.C．Heusedtotakehiscellphonewhengoingoutside.D．Heoncethrewawayhiscellphone.4、Themainpurposeofthepassageisto.A．tellusnottoletcellphonescontrolourlivesB．encourageotherstohikewithhiminFranceC．sharehisexperiencesinFrancewithusD．teachushowtogetalongwithneighbors第三部分語言知識(shí)運(yùn)用（共兩節(jié)）第一節(jié)（每小題1.5分，滿分30分）閱讀下面短文，從短文后各題所給的A、B、C和D四個(gè)選項(xiàng)中，選出可以填入空白處的最佳選項(xiàng)．26．（30分）"Efficiencyistheby-productofcomfort,"saysDr.ErwinTichauerofNewYorkUniversity.Toprovethis____,Dr.Tichaueruseshiscapabilitytofind_____waystodothings._____,hefeltthatthetraditionalkindofpliers(鉗子）______abetterdesign.Theusual____limitedhandmovementandusedunnecessaryforcebecauseitbentthe_____.Sohedesignedapairofplierstoallowthewristtoremaininacomfortableposition.Toimprovethedesignof______andthenmakeworkeasier,Dr.Tichauer____theoldtools.Heaskssuchquestionsas:why____astepladderhavefourlegs____threearemorestable?Whydoseascrewdriver(螺絲刀)havetobemadewithstraighthandles?Aftertestinghis____,hehasinventedanewtoolthatcauseslessmuscleinjuryandismoreefficient.Tichauerisnotinterestedingetting____fromhisinventions.Infact,hesays,"We_____peopletostealfromus.AtNewYorkUniversity,wedonotpatent(注冊(cè)專利）knowledgeorinvention."____companieshaveadoptedsomeofhisinventions.Asabiochemist,aswellasinventor,DrTechauer____theeffectofstressonareasofthebody.Eveneasy______workmayputheavystressonsmallareasofbodyand____causesaseriousdisease.Thushisstudiesofworkersinfactorieswhousethe____toolalldaylongareextremely____inlearningaboutthedamageonhumanbody?Dr.Techauerknowsthathecannotredesignthe____soheredesignsthetool!1、A．a(chǎn)rgumentB．impressionC．statementD．expectation2、A．unusualB．easierC．newD．correct3、A．EspeciallyB．What'smoreC．MeanwhileD．Forexample4、A．followedB．showedC．neededD．proved5、A．designB．habitsC．materialsD．work6、A．bodyB．fingerC．handD．wrist7、A．pliersB．a(chǎn)toolC．a(chǎn)stepladderD．screwdrivers8、A．testsB．usesC．fixesD．destroys9、A．couldB．willC．wouldD．must10、A．ifB．becauseC．whenD．once11、A．inventionsB．theoriesC．toolsD．questions12、A．recognizedB．famousC．excitedD．rich13、A．encourageB．preventC．warnD．forgive14、A．ModernB．ResearchC．CommercialD．Industrial15、A．teachesB．studiesC．producesD．discovers16、A．physicalB．dailyC．officeD．research17、A．intimeB．inadditionC．immediatelyD．commonly18、A．wrongB．oldC．sameD．heavy19、A．suitableB．valuableC．logicalD．practical20、A．workB．studyC．laborD．body第二節(jié)（每小題1.5分，滿分15分）閱讀下面材料，在空白處填入1個(gè)適當(dāng)?shù)膯卧~或括號(hào)內(nèi)單詞的正確形式。27．（15分）語法填空Intoday'sworldofmobilepayments,allwereallyneed1．(survive)isasmartphone.Butonecompanyishopingtomaketraditionalwalletscoolagain,by2．(bring)themintothedigitalage.ArmenianfirmVolterman'ssmartwallettakessecuritytoanewlevel.It'sfittedwithdifferenttechnology,suchas3．a(chǎn)larm,GPStracker,andevenacamera.Ifyourphoneandwalletbecomeseparated,thealarmwillwarnyou4．youdon'tleaveitbehind.Andifyourwallet5．(lose)orstolen,theGPStrackercanhelpyoureachit.Even6．(interesting)isthefront-facingcamera."Ifsomeonedarestoopenyourwallet7．permission,alittlecamerainside8．(take)apictureandsendittoyourmobilephone.Youwillfindit9．(easy)byreceivingapictureofthethief,"AzatTovmasyan,Volterman'sfounder,toldnewssiteBanks.am.Thehigh-techwalletwillbereleasedlaterthisyearandwillcomeinthree10．(model)，withthecheapestexpectedtocost$179.第四部分寫作（共兩節(jié)）第一節(jié)短文改錯(cuò)（滿分10分）28．（10分）假定英語課上老師要求同桌之間交換修改作文，請(qǐng)你修改你同桌寫的以下作文。文中共有10處錯(cuò)誤，每句中最多有兩處。錯(cuò)誤涉及一個(gè)單詞的增加、刪除或修改。增加：在缺詞處加一個(gè)漏詞符號(hào)(/\)，并在其下面寫出該加的詞。刪除：把多余的詞用斜線(\)

劃掉。修改：

在錯(cuò)的詞下畫一橫線，并在該詞下面寫出修改后的詞。注意：1.每處錯(cuò)誤及其修改均僅限一詞;2.只允許修改10處，多者(從第11處起)

不計(jì)分。Amongthefourseasonsinayear,summerismyfavorite,thatmakesmefree,excitedandenergy.Whensummervacationcameeveryyear,wecandoallthatwecan’tdoduringourschooltime,goshoppingwithfriends,swimminginwarmwaterandevenhikingandcampinginthedeepvalleys.Theseactivitiesleadmetoenjoyfullfree.Wecanfindusinanexcitingworldeveryday,withthesunshiningbright,treesgrowingbetterandflowerscomingoutofwithallkindsofcolors.SummermakesmefullofenergyandwefeelIhavethestrengthtodomostdifficultthingsinmylife.Ilikesummerbetter,andwhataboutyou?第二節(jié)書面表達(dá)（滿分25分）29．（25分）假定你是李華，最近在你校組織的中英文化知識(shí)大賽中獲得一等獎(jiǎng)，這很大程度上得益于外教Ms.Jenkins的悉心指導(dǎo)。請(qǐng)你用英語給她寫一封感謝信，要點(diǎn)包括：1.寫信目的；2.回顧過程；3.表達(dá)祝愿。注意：1.詞數(shù)100左右（開頭和結(jié)尾已給出，不計(jì)入總詞數(shù)）；2.可以適當(dāng)增加細(xì)節(jié)，以使行文連貫。DearMs.Jenkins,_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Yourssincerely,LiHua

參考答案第一部分（共20小題，每小題1.5分，滿分30分）1、A2、B3、A4、D5、D6、C7、B8、D9、A10、B11、C12、B13、C14、C15、B16、C17、D18、B19、B20、D第二部分閱讀理解（滿分40分）閱讀下列短文，從每題所給的A、B、C、D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。21、1、D2、C3、B4、B22、Spaceiswhereourfutureis—tripstotheMoon,Marsandbeyond.Mostpeoplewouldthinkthatasidefromcomets(彗星)andstars,thereislittleelseoutthere.But,sinceourspacejourneystartedwehaveleftsomuchtrash（垃圾）therethatscientistsarenowconcernedthatifwedon'tcleanitup,wemayallbeinmortal（致命的）danger.Thefirstpieceofspacejunkwascreatedin1964,whentheAmericansatelliteVanguardIstoppedoperatingandlostitsconnectionwiththegroundcenter.However,sinceitkeptorbitingaroundtheEarthwithoutanyconsequences,scientistsbecameincreasinglycomfortableabandoning（拋棄）thingsthatnolongerservedanyusefulpurposeinspace.Itisestimated（估計(jì)）thattherearenowover500,000piecesofman-madetrashorbitingtheEarthatspeedsofupto17,500milesperhour.Thejunkvariesfromtinypiecesofpaintchippedoffrocketstocameras,hugefueltanks,andevenodditemslikethemillion-dollartoolkitthatastronautHeidemarieStefanyshynPiperlostduringaspacewalk.Themajorproblemwiththespacetrashisthatitmayhitworkingsatellitesanddamagetravelingspacecraft(飛船).Moreover,piecesofjun