湖南师范大学附中2025届英语高三第一学期期末监测试题含解析

湖南师范大学附中2025届英语高三第一学期期末监测试题注意事项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．Theboss_________theemployeesariseinsalaryforages,butnothinghasoccurredyet.A．promisedB．hadpromisedC．wouldpromiseD．promises2．AftertheargumentColinranawayand______since.A．Isn’theardof B．wasn’theardofC．hasn’tbeenheardof D．hadn’tbeenheardof3．Wearetoholdthesportsmeetingnextweekend,________theairqualitybecomesbetter.A．which B．whenC．where D．while4．—Let’shaveagameoftennis;theloserhastotreattheothertoanice-cream.—________.A．I’mafraidsoB．It’sadealC．You’vegotapointD．Isupposenot5．Toworkfromhome,whichonecouldhardlyimagine,hasbeenmadewiththedevelopmentofcomputertechnology.A．possible B．itpossible C．possibly D．tobepossible6．Speakingaforeignlanguageallowsyouto________timeinanegotiation,foryoucanactlikeyouhavenotunderstoodtocomeupwithyouranswer.A．save B．afford C．buy D．spend7．_______thosepastyears,wecouldn’thelpfeelingsorryforourparentswhoneverhadarestalltheyearround.A．Lookingbackupon B．Lookingaround C．Lookingout D．Lookingup8．ThePartycouldhavestated______theirpolicywasonthismatter,butthevotersonlyreceivedaverydustyanswer.A．why B．when C．whether D．what9．Marybecame______homesickandcriticaloftheUnitedStates,soshefledfromherhomeinWestBloomfieldtoherhometowninAustria.A．completelyB．sincerelyC．approximatelyD．increasingly10．Ahurricanesweptthroughmyvillage.Justaswewerebeginningtolosehope,itsuddenlystopped.Itisreally“”.A．All’swellthatendswellB．LightningneverstrikestwiceinthesameplaceC．ItneverrainsbutifpoursD．Afriendinneedisafriendindeed11．Doyouknowthat______chairmanofthemeetinghasannouncedthatMrHodgehasbeenmade______managerofthisfactory?A．the,the B．/,the C．the,/ D．a,a12．TheladystandingovertheremaybefromtheUSA,_____Iguesshaslostherway.A．whom B．whoC．which D．where13．Ifhehadbeenworkinghard,he______intheofficenow.However,hedidn’t.A．wouldbeworking B．weretobeworking C．wasworking D．shouldwork14．Officefurniturelikechairsandsofasshouldbeattractiveaswellascomfortable.A．manually B．visuallyC．physically D．securely15．Greatpity!Hisillnessis________thetreatmentavailablesofar.A．within B．above C．about D．beyond16．Theboythefirstprize,buthewassocarelessastomakeafoolishmistake.A．musthavegained B．needhavegainedC．couldhavegained D．shallhavegained17．______suchaproblembefore,wehandledthesituationverywellthistime.A．Dealwith B．DealingwithC．Todealwith D．Havingdealtwith18．—Whereareyougoingtohangthepicture?—Ihaven’tdecidedyet.I________hangitinthediningroom.A．might B．mustC．need D．would19．I’mmostawfullygratefultoyou.Ican’tthinkwhatI________withoutyou.A．coulddo B．woulddoC．shouldhavedone D．musthavedone20．Thedaysaregonephysicalstrengthwasallyouneededtomakealiving．A．that B．whenC．where D．which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）DryIceisauniquesubstancewhichhasmanyuses.Essentially,dryiceisfrozenCO2.ThefirstreportofwhatwenowcalldryicecamefromtheFrenchchemistCharlesThilorierin1834.In324,theDryleeCorporationofAmericanamedthesolidformofCO2as"DryIce",whichiswhatitispopularlycalledtoday.Atnormalatmosphericpressure,CO2changesdirectlyfromsolidtogas.Itskipstheliquidphase（阶段）whichmakesregularicewet.FrozenCO2isalsomuchcolderthanregularice.Butregularicefreezesat32degreesFahrenheit,CO2changesfromgastosolidat-21.3degreesFahrenheit.Thisextremelycoldtemperaturemakesitverydangeroustohandlewithbarehands.Itcancausefrostbiteinaveryshortperiodoftime.Dryicehasbeenusedforavarietyofpurposesthroughoutthepastcentury.Itsprimaryuseistorefrigeratefoodwhenelectricalrefrigerationisn'tavailable.Throughtheprocessofsublimation(whenCO2changesfromsolidtogas),itcanmaintaincoldfoodforalongtime.Ifyou'veeverbeentoaplayandseenheavyfogontheground,itislikelythatyouhaveseendryiceinaction.ThiseffectcanbeachievedbecauseCO2isheavierthanair,soevaporated（挥发的）CO2willsinkandaccumulateontheground.Anotherinterestinguseforthissubstanceistobait（诱杀）insectslikemosquitoes.TheseinsectshavesensorswhichguidethemtoCO2.TheyfindthehighconcentrationofCO2indryicequiteattractive.Marshaslongbeenamysteryforhumanbeings.WehavebeenlookingforevidenceoflifeonMars.Inthe360sscientistsguessedthatthepolaricecapofMarswasmadeoffrozenCO2.MorerecentobservationshaveshownthatwhilethetopmostlayerconsistsoffrozenCO2,themostofitisprobablyregularfrozenwater.1、FrozenCO2getsitsnameof"DryIce"mainlybecauseA．itisveryeasytomakeitdryB．wecan'tmeltitanditdoesn'tgetwetC．itlookslikeiceatalowtemperatureD．itissolidlikeiceat-21.3degreesFahrenheit2、Theunderlinedword"frostbite"inthesecondparagraphprobablymeansA．theshakescausedbycoldB．damagecausedbyfreezingC．afevercausedbybeingcoldD．asharppaincausedbybums3、Accordingtothepassage,dryicecanbeusedtoA．freezemostoffoodinthenextcenturyB．increasetheproductionoffarmingC．makeavividfogeffectonstagesD．helptoimprovetheenvironment4、Whatdoesthelastparagraphmainlytellus?A．DryiceonMarsisnearthepolar.B．NotmuchdryicehasbeenfoundonMars.C．ThepolaricecapofMarsisunique.D．NofrozenCO,onMarscanbemelt.22．（8分）WhereIsSpringBreakWhereisSpringBreakgoingtobe?Theoptionsareendless.Doyouwanttogetyourbloodpumpingfromthrillingtravels?Looknofurther!Thesetoursanddestinationswillkeepyouonyourtoesallweeklong.Panama:Thisunderrateddestinationisalittle-knownsecretofthemosttravelers!Throughthistouryou’llgettohike,snorkel(浮潜)andexploreallthebestsightsthisbeautifulcountryhastooffer!Eightdaystoursfor$250/day.Canada:Thisdiversecountryisfullofoptions.ExploretheEastofCanadaandvisitcitiessuchasMontreal,QuebecorToronto.Ifyou’refeelingadventurous,exploretheWesternpartofthecountrywithaCanadianRockiesTour.Duringthistwelvedaystouryouwillhikeaglaciertobeautifulsceneryandwanderthroughpostcard-worthyvillages.TourstoCanadafor$200/day.Iceland:CheckoffoneofthesevenwondersoftheworldwithatouroftheNorthernLightsandGoldenCircle.Spendsevendaysfullofadventurelikehikingglaciers,snowshoeingthroughThingvellirNationalPark,relaxingintheGeysirHotSpringsandofcourseexperiencingthegloryoftheNorthernLights!Sevendaystoursfor$300/day.SouthAfrica:DiscoverthediversecultureandwildlifethatmakesupSouthAfrica.Yourtourplanincludesajourneyalongthecoastknownas“RainbowNation.”Hereyouwillenjoybeautifulscenery,ahuntingtravelthroughAddoElephantNationalParkandthewildlifeinTsitsikarnmaNationalPark.Ninedaystoursfor$230/day.1、Whatisthecommoncharacteristicofthetravelsmentionedinthetext?A．Exciting. B．Risky.C．Educational. D．Environmental.2、Accordingtothetext,Panamaisadestinationwhich.A．isnotasfamousastheotherthreeB．youcangotoforenjoyingsurfingC．offersanoptiontohikeintheparkD．takesthemosttimeofthefourtours3、Whichdestinationcoststouriststhemostmoney?A．Panama. B．Canada.C．Iceland. D．SouthAfrica.4、Whatcanbelearnedfromthetext?A．TouristscantakeahotshoweronlyinIceland.B．TouristscanhikeglaciersinbothCanadaandIceland.C．CanadaoffersRockiesTourfortouriststoexploretheEast.D．TouristscanenjoyahuntingtravelthroughTsitsikammaNationalPark.23．（8分）Supposeyoubecomealeaderinanorganization.It’sverylikelythatyou’llwanttohavevolunteerstohelpwiththeorganization’sactivities.Todoso,itshouldhelptounderstandwhypeopleundertakevolunteerworkandwhatkeepstheirinterestinthework.Let’sbeginwiththequestionofwhypeoplevolunteer.Researchershaveidentifiedseveralfactorsthatmotivatepeopletogetinvolved.Forexample,peoplevolunteertoexpresspersonalvaluesrelatedtounselfishness,toexpandtheirrangeofexperiences,andtostrengthensocialrelationships.Ifvolunteerpositionsdonotmeettheseneeds,peoplemaynotwishtoparticipate.Toselectvolunteers,youmayneedtounderstandthemotivationsofthepeopleyouwishtoattract.Peoplealsovolunteerbecausetheyarerequiredtodoso.Toincreaselevelsofcommunityservice,someschoolshavelaunchedcompulsoryvolunteerprograms.Unfortunately,theseprogramscanshiftpeople’swishofparticipationfromaninternalfactor(e.g.“Ivolunteerbecauseit’simportanttome”)toanexternalfactor(e.g.“IvolunteerbecauseI’mrequiredtodoso”).Whenthathappens,peoplebecomelesslikelytovolunteerinthefuture.Peoplemustbesensitivetothispossibilitywhentheymakevolunteeractivitiesamust.Oncepeoplebegintovolunteer,whatleadsthemtoremainintheirpositionsovertime?Toanswerthisquestion,researchershaveconductedfollow-upstudiesinwhichtheytrackvolunteersovertime.Forinstance,onestudyfollowed238volunteersinFloridaoverayear.Oneofthemostimportantfactorsthatinfluencedtheirsatisfactionasvolunteerswastheamountofsufferingtheyexperiencedintheirvolunteerpositions.Althoughthisresultmaynotsurpriseyou,itleadstoimportantpracticaladvice.Theresearchersnotethatattentionshouldbegivento“trainingmethodsthatwouldpreparevolunteersfortroublesomesituationsorprovidethemwithstrategiesforcopingwiththeproblemtheydoexperience”.Anotherstudyof302volunteersathospitalsinChicagofocusedonindividualdifferencesinthedegreetowhichpeopleview“volunteer”asanimportantsocialrole.Itwasassumedthatthosepeopleforwhomtheroleofvolunteerwasmostpartoftheirpersonalidentitywouldalsobemostlikelytocontinuevolunteerwork.Participantsindicatedthedegreetowhichthesocialrolematteredbyrespondingtostatementssuchas“VolunteeringinHospitalisanimportantpartofwhoIam.”Consistentwiththeresearchers’expectations,theyfoundapositivecorrelation(正相关)betweenthestrengthofroleidentityandthelengthoftimepeoplecontinuedtovolunteer.Theseresults,onceagain,leadtoconcreteadvice:“Onceanindividualbeginsvolunteering,continuedeffortsmightfocusondevelopingavolunteerroleidentity....ItemslikeT-shirtsthatallowvolunteerstoberecognizedpubliclyfortheircontributionscanhelpstrengthenroleidentity”.1、Peoplevolunteermainlyoutof__________.A．academicrequirements B．socialexpectationsC．financialrewards D．internalneeds2、WhatcanwelearnfromtheFloridastudy?A．Follow-upstudiesshouldlastforoneyear. B．Volunteersshouldgetmentallyprepared.C．Strategytrainingisamustinresearch. D．Volunteersareprovidedwithconcreteadvice.3、Whatismostlikelytomotivatevolunteerstocontinuetheirwork?A．Individualdifferencesinroleidentity. B．PubliclyidentifiablevolunteerT-shirts.C．Roleidentityasavolunteer. D．Practicaladvicefromresearchers.4、Whatisthebesttitleofthepassage?A．HowtoGetPeopletoVolunteer B．HowtoStudyVolunteerBehaviorsC．HowtoKeepVolunteers’Interest D．HowtoOrganizeVolunteerActivities24．（8分）Galaxysawamanandawomanwhocommunicatedwiththesignlanguageatthetrainstationwhenshewasonthewayhomeoneevening.Shenoticedthatthewomanaskedthemanforthedirection.Hetoldherthathedidnotknow.Galaxydecidedtohelpthem.Shehadlearnedthesignlanguagewhensheservedasavolunteerinthedeafandmute（聋哑）school.Thensheshowedthewomanthedirectionandleftheremailaddresstothemincasetheyneededherhelplater.Shereceivedanemailfromthatmanthenextday.Kazrimwashisname.Galaxyrepliedhismailsincerely，Theybothstartedchattingonlinesoonafterandbeganseeingeachother.Althoughtheyonlycommunicatedwiththesignlanguage,itneverbotheredher.Galaxywasfondofhimgradually.Obviously,Kazrimwasthesametoo.HepresentedGalaxywithabunchofsunflowersandaskedhersincerely,“Areyouwillingtobemygirlfriend?”Galaxywaspleasantlysurprised.Sherequestedhimtogivehersometimetopersuadeherparents.Asshehadexpected，herparentswereveryangryaftertheyhadlearnedoftheirlovestory.Galaxyexplained，“Kazrimisanexcellentandaveryoptimisticperson.Hehasaverypositiveattitudetowardslifeandwork.Hecaresforothersalways.Heis100％betterthanthenormal.Moreover,themuteisstillahuman.Heshouldpossessaperfectandwonderfullove.”Herparentsaskedtoseehim，then.TheveryworriedGalaxytookKazrimhomeafewdayslater.Whentheywereonthetrain，Kazrimtoldher,“I'mgoingtotellyourparentsthatI'llbelookingafteryouwellwithallmylife!”Galaxywasdeeplymoved.Assoonastheyhadenteredthehouse，Galaxyintroducedhimtoherparents.Shesaid,“ThisisKazrim.”Justrightafterherspeech，anunbelievablethinghappened.Kazrimthrewthegiftawayandheldherinhisarmstightly.Hesaid.“YOUCANTALK?”ItwasthesamequestionthatGalaxywantedtoask，too.Thefourpeoplewereshockedallofasudden.Asamatteroffact,KazrimalwaysbelievedthatGalaxywasamuteandhestillfellinlovewithherdeeply.1、HowdidGalaxyandKazrimgettoknoweachother?A．Theymeteachotherbychance.B．TheywereintroducedtoeachotherC．Theyoncestudiedatthesameuniversity.D．Theybothservedinaspecialneedsschool.2、HowdidGalaxyprobablycommunicatewithKazrimbeforeshetookhimhome?A．Writingwordsonpaper. B．Usingthesignlanguage.C．Judgingfromhisexpression. D．Speakinghernativelanguage.3、WhatdidGalaxyexpectherparentstodo?A．TohaveatalkwithKazrim. B．Toprepareforhermarriage.C．TotreatKazrimasanormalman. D．ToacceptKazrimasherboyfriend.4、Whatcanwelearnaboutthetwoyoungpeoplefromthepassage?A．Theyfellinloveatthefirstsight.B．Theycheatedeachothertowinlove.C．Theymistookeachotherforbeingmutes.D．TheyignoredtheangerofGalaxy'sparents.25．（10分）Overthepastcentury,analarmingnumberofanimalshavebecomeendangeredorevenextinct.Belowaresomeanimalswhosenumbershavebeenrapidlydroppinginrecentyears.PandaBearOneofthebiggestreasonscontributingtothedeclineinthepandaspeciesisthedestructionofitsnaturalhabitat.FarmersinChinahavegraduallybeenclaimingmoreandmoreoftheland.Asaresult,pandasareforcedtomoveawaytoplaceswhereitishardtofindbambooforfood.GreenTurtleThegreenseaturtlespecieshassurvivedforseveralmillionsofyears,soyoumightwonderwhyit’sonlybecomingendangerednow.Amajorcauseisthechangeinclimateandtemperature,whichbothaffectthehatchingratesofturtleeggs.Climatechangesalsocauseviolentweatherandrisingwaterlevelstofloodareaswhereturtlesusuallygotolaytheireggs.Apartfromthis,oilspillsandotherpoisonouspollution,aswellasincreasedfishingactivitiescancausesickness,orevendeathtothegreenturtles.CheetahCheetahsarefamousforbeingthefastestanimalonlandbuteventheycan’trunfromsomeofthelargerthreatsthathaveharmedthem.Likethepandabears,cheetahshavegraduallybeenlosingtheirnaturalhomesduetohumansclaiminglandanddevelopinginthoseareas.Tomakemattersevenworse,smalleranimalsmoveawaywhentheseareasareoccupied,whichmeansthatthecheetahhaslessfood!Don’tforgetthatotherlargeanimals,suchaslions,arealsofightingforanyfoodthattheycanfind,sooccasionallyyoungcheetahsendupaspreytoo.IndianElephantElephantsareextremelyintelligentanimalsandalsothelargestmammalsthatliveonland.Sadly,inAsiamanyelephantswerekilledsothatpeoplecouldremovetheirtuskstouseasdecorativeobjects.Whilethispracticehasbeenbannednow,somepeoplestillillegallycontinue.ForestsinIndiahavealsobeensteadilydestroyedandelephantsaresometimeskilledwhentheyenduponhumanterritory.1、Humans’increasingdemandforlanddoesn’taffectthenumberof________.A．IndianelephantsB．cheetahsC．pandabearsD．greenturtles2、Wecansavethelargestmammalslivingonlandby________.A．plantingmorebamboosB．helpingthemfindmatesC．stoppinghuntingthemD．preventingpoisonouspollution3、Thelivingconditionsofthefastestanimalonlandbecomeworsebecause________.A．forestshavebeendestroyedB．theyarethreatenedbyhumansandlargeranimalsC．peoplearefondofhuntingwildanimalsD．nolawbanspeoplefromremovingtheirtusks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）After21yearsofmarriage,Idiscoveredanewwayofkeepingthespark(火花)oflovealive.Istartedtogooutwithanotherwoman.Itwasreallymywife’s1Theotherwomanthatmy2wantedmetovisitwasmymother,whohasbeenawidow(寡妇)for19years,butthe3ofmyworkandmythreechildrenhadmadeitpossibletovisitheronly4ThatnightIcalledtoinvitehertogooutfor5andamovie.“What’swrong,areyou6?”sheasked.Mymotheristhetypeofwomanwho7thatalatenightcallorasurpriseinvitationisasignofbadnews.“Ithoughtthatitwouldbe8topasssometimewithyou,”Iresponded.“Justthe9ofus.”Shethoughtaboutitforamoment,thensaid,“Iwouldlikethatverymuch.”Wewenttoarestaurantthat,althoughnotelegant,wasveryniceand10Mymothertookmyarm11sheweretheFirstLady.Duringthedinnerwehadanagreeable12—nothingextraordinary—but13recenteventsofeachother’slife.Wetalkedsomuchthatwe14themovie.Aswearrivedatherhouselater,shesaid,“I’ll15withyouagain,butonlyifyouletmeinviteyou.”Iagreed.“Howwasyourdinner16?”askedmywifewhenIgothome.“Verynice.MuchmoresothanIcouldhaveimagined,”Ianswered.Afewdayslatermymother17forher.AtthatmomentI18theimportanceofsayingintime“ILOVEYOU”andgivingourlovedonesthetimethatthey191、A．thoughtB．beliefC．ideaD．opinion2、A．fatherB．childrenC．motherD．wife3、A．demandsB．pleasuresC．anxietiesD．commands4、A．unusuallyB．frequentlyC．occasionallyD．immediately5、A．dinnerB．awalkC．somefreshairD．awhile6、A．wellB．goodC．safeD．bad7、A．guessesB．imaginesC．supposesD．suspects8、A．necessaryB．pleasantC．properD．possible9、A．twoB．threeC．fourD．five10、A．cheapB．comfortableC．coolD．tasty11、A．incaseB．nowthatC．asifD．sothat12、A．troubleB．conversationC．silenceD．experiment13、A．catchinguponB．findingoutC．makingsureD．workingout14、A．missedB．enjoyedC．rememberedD．watched15、A．eatoutB．gooutC．runoutD．keepout16、A．partyB．danceC．hourD．date17、A．heardofB．sufferedfromC．diedofD．recoveredfrom18、A．nothingB．anythingC．somethingD．everything19、A．acceptedB．doubtedC．consideredD．understood20、A．winB．deserveC．spendD．waste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）Directions:Afterreadingthepassagebelow,fillintheblankstomakethepassagecoherentandgrammaticallycorrect.Fortheblankswithagivenword,fillineachblankwiththeproperformofthegivenword;fortheotherblanks,useonewordthatbestfitseachblank.Intwodays,itwillbeChristmas,childrenalloverworld1．(look)forwardtothisdayforweeks.PeoplecelebrateChristmaswithfood,decorations,musicandmore.Butformanypeople,gift-givingisthemostexcitingpartoftheholiday.IhavefoundmemoriesofChristmasshoppingwithmyfamilyasachild.Ienjoyedthechallengeofkeepingmyparents’giftsasecret.Itwashardtobuygiftsright.2．theirnoseswithoutthemseeing.Everyoneplaced3．(wrap)giftsundertheChristmastreeuntilChristmasmorning,4．weopenedthem.Pickingagreatgiftrequire5．(know)thepersonyou’regivingitto.Youneedtoknowtheperson’stastesandfindsomethingthepersondoesn’talreadyhave.Thiscanbequiteabigchallenge.Oftenit’swisetoprovideareceipt6．thepersonneedstoexchangethegift.Thebestgiftsarepersonal.ManyAmericansdon’tfeelmoneyconstitutesagoodgift7．itdoesn’trequireanythought.Theyprefersomethingchosenjustfortheperson.Ifthegiftisahigh-qualityhomemadegift,that’sevenbetter.Gift-givingreflectsthereason8．peoplecelebrateChristmas.ChristiansinparticularrememberthebirthofJesus.Whenhewasborn,wisementraveledmanymilestovisithim,9．(bring)expensivegifts.Butthegreatestgiftwasn’tfromthewiseman,butfromGod—thebabyJesus.Godgavethisgiftbecauseeveryoneneededit.WeneededGodtoforgiveourbadactionssothatwe10．liveforeverwithhim.SoonChristmaswegivepresentstoimitateGod’sactionofgivingtheperfectgift.第四部分写作（共两节）第一节短文改错（满分10分）28．（10分）假如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。IstillrememberthefirstdayIcometothisnewschool.Everythingwasnewtome，whatmademerealizeIwasnolongerasmallchild.Ihadtodependonme.Luckily，Imadeseveralgoodfriend.Theirinterestsweresimilarwithmine.IhadgreatEnglishteacher,Maggie.SheletmeknowtheimportantofEnglish.SoIdecidedtolearnEnglishhardly.Althoughitwasverydifficultatfirst,butwiththehelpofmyteacher,Imaderapidlyprogress.Justastheoldsayinggoes,“Wherethereisawill,thereisaway.”第二节书面表达（满分25分）29．（25分）假设你是红星中学高一李华，请给你的美国朋友Jim写一封信，介绍一个你最喜欢的中国传统节日。内容可包括：1.节日名称；2.庆祝时间及原因；3.庆祝活动。注意：1.词