甘肅省會(huì)寧一中高三3月份第一次模擬考試新高考英語(yǔ)試卷及答案解析

甘肅省會(huì)寧一中高三3月份第一次模擬考試新高考英語(yǔ)試卷考生須知：1．全卷分選擇題和非選擇題兩部分，全部在答題紙上作答。選擇題必須用2B鉛筆填涂；非選擇題的答案必須用黑色字跡的鋼筆或答字筆寫在“答題紙”相應(yīng)位置上。2．請(qǐng)用黑色字跡的鋼筆或答字筆在“答題紙”上先填寫姓名和準(zhǔn)考證號(hào)。3．保持卡面清潔，不要折疊，不要弄破、弄皺，在草稿紙、試題卷上答題無(wú)效。第一部分（共20小題，每小題1.5分，滿分30分）1．----CouldIaskyouaprivatequestion?----Sure,A．pardonmeB．goaheadC．goodideaD．forgetit2．TheydideverythingintheirpowertosavethebuildingdatingbacktotheQingDynasty,buttheireffortswere.A．inturn B．intimeC．invain D．inneed3．---IprefershuttingmyselfinandlisteningtomusicalldayonSundays.---That’s_______Idon’tagree.Youshouldhaveamoreactivelife.A．how B．when C．where D．what4．Aftercollege,hewasemployedinamiddleschoolandthereeversince.A．wouldworkedB．hadworkedC．workedD．hasworked5．Goodnews!Wedidn’tspendwehadexpected.A．a(chǎn)shalfmuchmoneyas B．muchmoneyashalfasC．a(chǎn)smuchmoneyashalf D．halfasmuchmoneyas6．--Whataboutthetwoofusgoingdowntown?--___________.Ihatespendingtimehangingaround.A．Thatsuitsmefine B．WhynotC．Itdependsontheweather D．Well,that'sthelastthingIwilldo7．Bythetimeherealizesthemistakehe________，itwillbetoolateforhimtodoanythingaboutit.A．hasmade B．made C．makes D．willmake8．Isthisyourcellphone,Tony?I________itwhenIwascleaningtheclassroom.A．cameacross B．dealtwithC．lookedafter D．heldonto9．Iamsurethatthegirlyouaregoingtomeetismorebeautiful_______thaninherpictures.A．innature B．inmovement C．intheflesh D．inthemood10．Inthestudents’eyes,MrsSmithisamothermorethanateacher.shetreatsthestudentsjustlikeherownchildren.A．AsaresultB．InotherwordsC．WhatismoreD．Firstofall11．Hearingthenews,sherushedout,________thebook________onthetableanddisappearedintothedistance.A．left;lainopen B．left;layopenedC．leaving;lieopened D．leaving;lyingopen12．--Catherine,Ihavecleanedtheroomforyou.---Thanks.You_______it.Icouldmanageitmyself.A．needn’tdo B．shouldn’thavedone C．mustn’tdo D．needn’thavedone13．Totellthetruth,IwouldratherI________thepaininsteadofyou.Youdon’tknowhowworriedIwas.A．took B．hadtakenC．havetaken D．shouldhavetaken14．Thecustomsofficerswereinsistingthatsuitcasesshouldbeopenedandtheircontents_______forcloserinspection.A．laidout B．givenout C．sentout D．pickedout15．Peterishelpingsettablesinthehall,whereJohn’sbirthdayparty________.A．isholdingB．hasheldC．isheldD．willbeheld16．—Whichdoyouprefer,theformeroptionorthelatterone?—Ithinktheformeroneisnobetterthanthelatterone.SoI’llchoose________.A．theformeroneB．thelatteroneC．eitherofthemD．neitherofthem17．Wearesotired.______wecouldtakethedayofftomorrow!A．OnlyifB．WhatifC．IfonlyD．Ifso18．Hisstrongsenseofhumorwasmakeeveryoneintheroomburstoutlaughing.A．soastoB．suchastoC．sothatD．suchthat19．--Ifeelnervouswhentakinganexam.--andyoucandoitwell.A．TakeitweasyB．TakeyourtimeC．GoodluckD．It’suptoyou20．—Doyoulikethebookyoufatherboughtyou?—Verymuch.It’sexactly______Iwanted.A．which B．thatC．what D．how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）Areyouinterestedinmoviemusicals?Herearesomebestmoviemusicalsyouneedtowatch.Singin'intheRain(1952)DebbieReynolds(theheroine)isultra-charminginthistime-honoredclassicmusicalaboutthecomingofthetalkingpicturesinmoviehistory.SheplaysawinningshowgirlwithagoldensingingvoicedesignedforHollywoodstars.YoucanalsoseehowGeneKelly(thehero)madeahitinthetimeless"Singin'intheRain".TheSoundofMusic(1965)Ithitthebigscreenin1965andbecameanearlyblockbuster.It'soneofthosemoviesthateverybodywatchesagainandagain.Whetheryou'resingingalongto"Do-Re-Mi"or"MyFavoriteThings",you'llstillthinkofthecuteVonTrappchildrenandthebeautifulAustriansetting.ChristopherPlummer(thehero)iswonderfulastheseriouscaptainmeltsintogentlenesswhensinging"Edelweiss".AndJulieAndrews(theheroine)showsheraddictivevoiceinsuchsongsas"IHaveConfidence".Chicago(2002)ReneeZellwegerandCatherineZeta-Jonessinganddanceascriminalsinthismusicalaboutfame,envy,andmurderouslove.Famoussongsinclude"CellBlockTango",wherefemalecriminalssingabouthowtheyendedupinjail.ItwonBestPicture,BestActressinasupportingrole,BestArtDirection-SetDecoration,BestCostumeDesign,BestFilmEditing,andBestSoundinOscar2003.LaLaLand(2016)StrugglingactressMia(EmmaStone)andambitiousjazzpianistSebastian(RyanGosling)beginaromanceastheybothfollowtheirheartinthepathoftheirdreamsinLosAngeles.ItwonBestPerformancebyanActressinaleadingrole,BestachievementinDirecting,BestAchievementinCinematography,BestachievementinMusicWrittenforMotionPictures,BestachievementinMusicWrittenforMotionPictures,andBestAchievementinProductionDesigninOscar2017.1、Whichmoviemusicalmarksachangeinthemoviehistory?A．ChicagoB．LaLaLandC．Singin'intheRainD．TheSoundofMusic2、Inwhichsongwillyoufeelgentlenessfromaseriousman?A．"Do-Re-Mi"B．"Edelweiss"C．"Singin'intheRain"D．"CellBlockTango"3、WhatdoChicagoandLaLaLandhaveincommon?A．TheybothwonBestPictureB．TheybothtalkaboutcrimesC．Theybothtalkaboutdream.D．Theybothwon6OscarAwards4、IfyouareinterestedinJazzmusic,whoserolewillbeyourfavorite?A．RyanGosling'sB．ReneeZellweger'sC．CatherineZeta-Jones'D．ChristopherPlummer's22．（8分）Youknowhowmuchyourtelephonehaschangedoverthepast10years?Yourcarwillchangeevenmorethanthatinthenext10years.Oneofthebigchangesisthatcarswilldrivethemselves.Somedayyoumaynotneedtodriveacar.Youwilljusttellthecarwhereyouwanttogoanditwilldriveitself.“Wedefinitelyhavethetechnologyforitnow,”saysAndrewPoliakofautomotivetechnologysupplierQNX.“Weexpectself-drivingcarstobeamainstreamthingbetween2020and2025.”TheAmericancompanyGooglehasbeenworkingonaself-drivingautomobileforyears.ThesecarsarealreadyontheroadsintheUnitedStates,mainlyinCalifornia.Googlecarsaretrulyself-driving.Thesecarshavenosteeringwheels(方向盤）orpedals.Lastweek,policeorderedoneofGoogle’scarstostopfordrivingtooslowlyonapublicroad.Thecarwasnotdisobeyinganylaw,sonoonewaspunished.Butpolicedidspeakwiththeoperatorsofthevehicle.AccordingtoGoogle,itsself-drivingcarshavebeendrivennearly2millionkilometers.Thatisequaltothedistancetheaveragepersondrivesin90years.Sofar,noGoogleself-drivingcarhasgottenatrafficticket.Someofthemhavebeeninaccidentswhenothercarshitthem.Othercompaniesareworkingonself-drivingcars.Mercedes-Benz,Audi,BMW,VolvoandToyotaallhaveplansforsuchvehicles.AcompanycalledBestMileplanstooperateselfdrivingbusesinSwitzerlandnextspring.Thebuseswillholduptoninepeopleandwillbetestedfortwoyears.Mercedes-Benzisdevelopinglargeself-drivingtrucksforlongtrips.Thesetrucksusedriverstocontrolthem.1、WhatAndrewPoliaksaidsuggeststhat.A．hetakesprideintheirtechnologyonself-drivingcarsB．heiseagertoselltheirtechnologyonself-drivingcarsC．heisoptimisticaboutthedevelopmentofself-drivingcarsD．hefeelssurepeoplewillsoonhavethetechnologyforself-drivingcars2、WhydidthepoliceorderoneofGoogle’scarstostoplastweek?A．Becauseitsspeedwastoolow.B．Becauseitdisobeyedlocallaws.C．Becausetheoperatorsbehavedbadly.D．Becausethereexistedtechnologicalproblems.3、WhatcausedsomeofGoogle’sself-drivingcarstohaveaccidents?A．Lackofexperience. B．Highspeed.C．Othercars’faults. D．Toomuchtraffic.4、Whatcanbethebesttitleforthetext?A．Self-drivingCarsB．HowtoDevelopSelf-drivingCarsC．TheAdvantagesofSelf-drivingCarsD．OwningASelf-drivingCarIsFashionable23．（8分）Iamtravelinghome.Itisbitterlycoldandsnowy,butthewarmtrainisrightontime.IfeelpleasantlysatisfiedasIlookoutattherushhourtrafficonthemotorway.Ifeelmoresatisfiedasthesmelloffreshcoffeeannouncesthearrivalofthedrinksservice.Swissfriendsoftentellme,proudly,thattheirrailserviceisthebestintheworld,butrecently,oneexperiencehasprovedthatthegreatSwissloveaffairwiththeirrailwayhasturnedalittlesour.Itallbeganwiththedecisiontoendticketsalesontrains.OnecoldmorningIarrivedatmylocalstationonlytofindthattheticketmachinewasbroken.Nomatter,Ithought,Ihavegotasmartphone,andIhurriedlysetaboutbuyingmyticketthatway.ThiswasnotaseasyasIhadexpected,busyingmyselfbetweencreditcardandphonewithfreezingcoldfingers,but,bythetimeIgotonthetraintoGenevaIhadane-ticketandIproudlyshowedittotheconductor.Unfortunatelyshetoldmethatmyticketwasnotvalid.SeveralweekslateraletterarrivedfromSwissrailwaystogetherwithafinefor190francs($210).Thegoodpeopletheretellmetheformalpaymentformyticketfrommycreditcardcompanyarrivedfourminutesaftermytrainleftthestation.Thatmeans,theysay,thatIboughtmyticketonthetrain—andthatisstrictlyprohibited.Swissrailwayssaytheirpolicyisdesignedtoprotecthonestticket-payingpassengers,butaquicklookattheirbalancesheetsuggestssomethingelse.Thecompanyismakingabout$2millionamonthfromfines.Althoughtraintravelisstillpopular,thoseseatsdonotfeelascomfortable;thecoffeedoesnotsmellquitesogood—becauseSwissrailwayshavelost,fornowanyway,somethingfarmorepreciousthan$2millionamonth:goodrelationswiththeircustomers.1、Whatcanwelearnfromparagraph1?A．TheSwisstrainsusuallycomelate.B．Trafficonthemotorwaygoessmoothly.C．TheauthorhatestravelingontheSwisstrain.D．TheauthorisgenerallypleasedwiththeSwissrailservice.2、Whydidtheconductorsaythattheauthor’se-ticketwasinvalid?A．Itwaspurchasedonline.B．Itwaspaidforafterthetrain’sdeparture.C．Itwaspurchasedonaticketmachine.D．Itwaspaidonasmartphone.3、Whatdoestheauthorwanttoshowbytellingtheexperience?A．Thefinewasunfair.B．Theconductorwasimpolite.C．E-ticketsaregettingpopular.D．Creditcardscanbeinconvenient.4、WhatdoestheauthorthinkofthenewpolicyofSwissrailways?A．Itattractsmorepeopletotravelbytrain.B．Itmakesthecompanylosealotofmoney.C．Itdamagescompany-customerrelations.D．Itprotectshonestticket-payingpassengers.24．（8分）BeneaththewaterintheChina'sQiandaoLakeliesahiddentreasure.TheancientcityofShiCheng(alsoknownasLionCity),locatedintheprovinceofZhejiang,hasbeensubmergedunderwaterfor53years.ShiChengwasfoundedabout1,300yearsagoinavalleysurroundedbytheFiveLionMountains.WhentheChinesegovernmentdecidedtheyneededanewhydroelectricpowerstation(水力發(fā)電站)，adamandman-madelakewereconstructedandthecitywasleftatthebottomofthisnewbodyofwater.Now,itsitsatdepthsrangingfrom85feettoabout103feet.MuchliketheMachuPicchuruinsinPeru,thisunderwatercityremainedforgottenuntilsomerenewedinterestsleadtoitsrediscovery.QiuFeng,alocalofficialinchargeoftourismthoughtaboututilizingShiChengforentertainmentonthelakeandasadestinationfordivingclubs.OnSeptember18,2001,scubadiversmadetheirfirstattemptunderwater."Wewerelucky.Assoonaswedivedintothelake,wefoundtheoutsidewallofthetownandevenpickedupabrick,"QiutoldGuangzhouDailyinaninterview.Moreresearchwasconducted,anditwasdiscoveredthattheentiretownwasintact(t881),includingwoodenbeamsandstairs.Aftertheinitialfindings,internationalarchaeologistsandafilmcrewthenrecordedthepreservationofthelostruins.Lookingatsurfaceofthelake,dottedwithover1,000islands,you'dneverknowthatanentirecitywasbelow.It'sincredibletothinkthatafterallthistime,thestructurestillremainsintactandwecouldonedayvisitit.Untilthen,ShiChengwillcontinuetoremaininconspicuouslysubmerged1、WhywasShiChengcoveredbywateraccordingtothepassage?A．Becausethecityhasalonghistory.B．Becausethegovernmentcouldattractmoretouristsbydoingso.C．Becausethegovernmentneededtobuildapowerstationwhereitwas.D．Themountainssurroundingthecityledtotheconsequence.2、Whatdoestheunderlinedword"initial"meaninparagraph2?A．Original B．GreatC．Wonderful D．Amazing3、WhatisthemostunbelievablepartofShiChengaccordingtothepassage?A．IthassomethingtodowithMachuPicchuruinsinPeru.B．Noonewasinterestedinthelostcityforalongtime.C．Itsstructurekeepsperfectinthewaterforalongtime.D．Thereareover1,000islandsprotectingthelostcity.4、Whowillmostprobablycometovisitthelostcity?A．Someonewholikesswimming.B．Someonewholikesdiving.C．Someonewholikesclimbingmountains.D．Someonewholikestakingpictures.25．（10分）I’venoticedsomethinghappeningfairlyregularlyamongmydaughterandherfriends.Whenthey’reallsittingaroundaskingeachotherwhichphototheyshouldpostonInstagram,orwhenthey’resendingclothespicturesaroundinagroupchataskingwhichonetheyshouldwear,manyofthegirlswillrespondbychoosingtheworstpictureandtheleastattractiveclothes.Why?Becausethey’reteenagersandenvyiswhattheydo.Everyoneinawhile,though,therewillbeagirlwhospeaksthetruth.Theonewhosays“Yoursmilelooksfalseinthefirstpicture,”or“Thatsecondpairofjeansmakesyourfigurelookextremelyunusual.”Sure,thesemayatfirstseemkindofharsh.ButaccordingtonewresearchpublishedinPsychologicalScience,theyarecomingfromfriendswhotrulycare,theoneswhoaren’tafraidtospeakupandtellitlikeitis.“Wehaveshownthatpeoplecanbecrueltobekind,”explainedleadresearcherBelénLópez-Pérez.“Theymaydecidetomakesomeonefeelworseifthisemotion（感情）isbeneficialforthatotherperson,evenifthisisnotofanypersonalbenefittothem.”Forthestudy,researchersasked140volunteerstoplayaviolentvideogame,andthengiveadvicetoanunknownpartnerwhowasgoingthroughtoughpersonaltimesonwinningthegame.Theresearchersfoundthatvolunteersweremorelikelytodonegative（反射的）iftheyfeltitwasimportantfortheirpartnertowinthegame.Thefindingssuggestthatitwassympathythatledtheparticipantstochooseparticularnegativeemotionalexperiencebecausetheybelieveditwouldeventuallyhelptheirpartnerbesuccessfulinthegame.“Thesefindingshelpedustounderstand,forinstance,whywesometimesmaytrytomakeourlovedonesfeelbadifwethinkthisemotiontobeusefultoachieveagoal,”López-Pérezconcluded.Inotherwords,thetruthmayhurt,butweallneedameanfriendwhoiswillingtogiveittous.1、Whatistheauthor’spurposeinwritingParagraph1?A．Topointoutasocialphenomenon.B．Tointroducethetopicofthepassage.C．Towarngirlsnottosendpicturesaround.D．Topersuadethegirlstobehavethemselves.2、Whatdoestheunderlinedword“these”inParagraph2referto?A．Thefriends.B．Thegirls.C．Theclothes.D．Thecomments.3、Howdidthevolunteersadvisetheirpartnertowinthegame?A．Bycheeringthemon.B．Byperformingactsofkindness.C．Bytendingtorespondnegatively.D．Byexpressingdeepsympathyforthem.4、Whatisthebesttitleforthetext?A．WeNeedMeanFriends.B．Neverhurtothers.C．WeMustTryHardtoAchieveGoals.D．NeverPlayViolentVideoGames.第三部分語(yǔ)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）MymostmemorableoccasionwithanoldsonginanewplacewasinlateApril,1974.WhileIwasthenteachingmathematicsinanAmericanuniversity,asmallgrant(撥款)allowedmetoteachattheUniversityofNewSouthWalesinAustralia.Ihadjust

1.OneeveningIwenttoa

2thathadayoungpianoplayer.AlmostallthesongsheplayedwereonesI'dneverheardbefore.Heaskedfor

3,andpeopleaskedforothersongscompletely

4tome.Thensomeonepointedtome,"WehaveanAmerican

5-he'snewhere.Let'sheararequestfromhim."Inmygreatignoranceof

6music,eitherAmericanorAustralian,Iwasonthespot.ButIhadbeguntolearnAustralian

7.TheUniversityofNewSouthWalesisonahillsideaboveamajoravenuenamedAnzacParade,

8theAustraliaNewZealandArmyCorps(ANZAC),which

9forEnglandinWorldWarⅠ.AnzacDayisanimportantAustralianholidayhonoringthesacrifices(犧牲)madeby

10.Theimportantholiday

11onApril25,thedaytheANZACforceslandedatGallipoli,innorthernTurkey,in1915.AndIdidknowasongthatseemed

12fortheholiday.Iaskedthe

13ifhecouldplay"TheWhiteCliffsofDover."Hesaid,"Idon't

14thatone."AvisibleshockwentaroundtherestaurantThena(n)

15mansaid,"Well,ler'ssingitforhim."Actuallytheentireroom,

16everyoneovertheageof40,joinedinsingingthesong,whichbecamepopularinEnglandin1942and

17throughouttheEnglish-speakingworld.It'sanoldsong.

18itexpressesahopeforpeaceastimelytodayasitwasduringtheBattleofBritain.Andpeoplemadeitvery

19afterwardthattheyappreciatedmyknowledgeandrespectfor

20tradition.Thenewcomer,inthenewplace,hadmadehimselfoneofthegang.1、A．finishedB．a(chǎn)rrivedC．a(chǎn)ppearedD．passed2、A．mallB．restaurantC．schoolD．hotel3、A．a(chǎn)dviceB．helpC．requestsD．donations4、A．comfortingB．pleasantC．ordinaryD．unfamiliar5、A．heroB．colleagueC．studentD．visitor6、A．originalB．softC．modemD．western7、A．cultureB．musicC．literatureD．lifestyle8、A．nmemoryofB．inplaceofC．insupportofD．intermsof9、A．preparedB．searchedC．foughtD．cheered10、A．friendB．soldiersC．theAmericansD．theBritish11、A．surfacesB．breaksC．endsD．falls12、A．readyB．a(chǎn)ppropriateC．reasonableD．responsible13、A．customerB．managerC．pianistD．waiter14、A．haveB．singC．playD．know15、A．olderB．youngerC．strongerD．higher16、A．regretfullyB．certainlyC．a(chǎn)nxiouslyD．normally17、A．existedB．developedC．spreadD．faded18、A．butB．soC．ifD．though19、A．a(chǎn)mazingB．religiousC．familyD．clear20、A．localB．religiousC．familyD．weak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）Everyyearover2,500peopledieand12,6001．(injure)inhomefiresinAmerica.Everyday,Americansexperiencethegreatfearoffire.2．mostofthemdon’tunderstandfire.Toprotect3．(you),itisimportanttolearnthebasiccharacteristicoffire.Inlessthan30seconds,asmallflamecanget4．(complete)outofcontrolandturnintoamajorfire.Mostdeadlyfiresoccurinthehomewhenpeopleareasleep.Ifyouwakeuptoafire,thefirespreadstooquicklyandthesmokeistoothick,maybethereisjustlittletime5．(escape).Heatismore6．(threaten)thanflames.Infiveminutes,aroomcangetsohotthateverythingin7．startstobumatonce.Firestartsbright,butquicklyproducesblacksmokeandcompletedarkness.Ifyouwakeuptoafire,youmaybeblindedandconfusedaboutwhereyouareorinwhich8．(direct)youshouldgo.Youareevenunabletofindyourwayaroundthehomeyou9．(live)inforages.Fireproducessmokeandpoisonousgases.Breathingevensmallamountsofsmokeandtoxicgasescanmakeyoutired,sleepyandshortofbreath.As10．result,youmaynotwakeupintimetoescape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(yǔ)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。OnSunday,MissGreentoldLisa,JackandLilyastoryaboutagirlnamesCathy,whoisjust12yearsold、Oneday,whenshewasatthehome,hermothercarelesscutherfinger,whichimmediatelystartedbleeding、Asalittlegirl,Cathydidn’tgetapanic、Instead,shecalmlycleanedhermotherwoundandthenstoppeditfrombleed、Shedidthatsoshehadjustlearnedhowtogivefirstaid、ThenMissGreenencouragedbothofthemtolearnmoreaboutfirstaid、“It’sreallyimportantbecauseitcannotonlyhelpsdealwithinjuriesbutalsosavelife,”shesaid、Afterhearingit,theydecidetolearnfirstaidskills、第二節(jié)書面表達(dá)（滿分25分）29．（25分）假如你是二中高三學(xué)生趙剛。你與一名叫王林的災(zāi)區(qū)孤兒結(jié)對(duì)子給予幫助。為了和他成為朋友，并在學(xué)習(xí)上給予他一定的幫助，請(qǐng)給他寫一封信，信的內(nèi)容包括：1.

你個(gè)人的基本情況（年齡，愛好，特長(zhǎng)，理想）;2.

向他介紹你的學(xué)習(xí)經(jīng)驗(yàn)（至少兩條）;3.

表示歡迎。注意：1.

詞數(shù)100詞左右;2.

文章的開頭和結(jié)尾已經(jīng)給出;