2024屆甘肅省民樂(lè)一中下學(xué)期四調(diào)考試高三年級(jí)英語(yǔ)試題試卷含解析

2024屆甘肅省民樂(lè)一中下學(xué)期四調(diào)考試高三年級(jí)英語(yǔ)試題試卷考生須知：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．Theseniorteacheralwaysgoesswimminganddoespush-upstostay________.A．inplace B．inorderC．inshape D．infashion2．PleasewearyourbestclothesonMonday,asyourclassphotos______then.A．willtakeB．willbetakenC．havetakenD．havebeentaken3．—Thefilmis,Ihavetosay,notabitinteresting.—Why?It’s________thanthefilmsIhaveeverseen.A．farmoreinteresting B．muchlessinterestingC．nomoreinteresting D．a(chǎn)nylessinteresting4．He’squite_________,butIcan’timaginehimaspresidentofsuchalargelistedcompany.A．enthusiasticB．generousC．competentD．sympathetic5．IfIcanhelp,Idon’tlikeworkinglateintothenight.A．so B．that C．them D．it6．—Lindahasn’tshownupyet.—It’sstrange.She____.A．could B．might C．musthave D．shouldhave7．____ofdangerinthestreetatnight,thegirldoesn’tdaretogooutwithoutsomeone____her.A．Warned;accompaniedB．Warned;accompanyingC．Warning;accompaniedD．Warning;accompanying8．Wepackedallthehooksinwoodenboxessothattheydamaged.A．don’tgetB．won’tgetC．didn’tgetD．wouldn’tget9．Thefolksweredelightedatthemessageoftheirrelatives_______thatmineexplosion.A．survived B．tosurvive C．weresurviving D．surviving10．Lucy__writingheressayby10:00thismorning.Afterthat,shelistenedtomusicforawhile.A．willfinish B．finishesC．hasfinished D．hadfinished11．Salesdirectorisaposition_______communicationabilityisjustasimportantassaleskills.A．which B．thatC．when D．where12．Mr.Greenwasveryfamouswhenhelivedthere.Thereis______tobesomeoneinthisdistrictwhoremembershim.A．content B．opposedC．bound D．restricted13．Theimportantthinginlifeistohaveagreataim,andthe________toachieveit.A．a(chǎn)cquisitionB．comprehensionC．determinationD．satisfaction14．Thatchildren______meetwithsetbacksisamatterofnecessityasthey_____,soparentsdon’tworryaboutthat.A．shall;grewup B．must；grewup C．can;growup D．will;growup15．Itisreportedthehousingpricesinsomebigcitiesfallindifferentdegrees.A．whichB．whatC．thatD．where16．—NextweekIwillgotoajobinterview.willyougivemesomesuggestions?—Smilingisagreatwaytomakeyourself________.A．standout B．turnoutC．workout D．pickout17．WolfWarrior2,which________the“AwardforBestVisualEffects”attheBeijingFilmFestival,indicatesChina'sfilmindustryhascomeofage.A．winsB．wonC．haswonD．hadwon18．________abike,shecycledhome.A．Bought B．Tobuy C．Beingbought D．Havingbought19．Wehaveonlytwentyminutesleft，sopleasegettothepointanddon’tsayanythingthatisn’t________toourproblem.A．relevantB．sensitiveC．familiarD．similar20．Thisbookissaidtobethespecialone,which________manyeventsthatcannotbefoundinotherhistorybooks.A．covers B．writesC．prints D．reads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）GOINGTOUNIVERSITY

issupposedtobeamind-broadeningexperience.Thatstatementisprobablymadeincomparisontotrainingforworkstraightafterschool,whichmightnotbesoencouraging.Butisitactuallytrue?JessikaGolleoftheUniversityofTübingen,inGermany,thoughtshewouldtrytofindout.Herresult,however,isnotquitewhatmightbeexpected.Asshereportsin

PsychologicalScience

thisweek,shefoundthatthosewhohavebeentouniversitydoindeedseemtoleavewithbroaderandmoreinquiringmindsthanthosewhohavespenttheirimmediatepost-schoolyearsinvocational(職業(yè)的)trainingforwork.However,itwasnotthecasethatuniversitybroadenedminds.Rather,workseemedtonarrowthem.Dr.Gollecametothisconclusionaftersheandateamofcolleaguesstudiedtheearlycareersof2,095Germanyoungsters.Theteamusedtwostandardizedteststoassesstheirvolunteers.Onewasofpersonalitytraits,includingopenness,conscientiousness（認(rèn)真）andsoon.Theotherwasofattitudes,suchasrealistic,investigativeandenterprising.Theyadministeredbothteststwice—oncetowardstheendofeachvolunteer’stimeatschool,andthenagainsixyearslater.Oftheoriginalgroup,382wereontheintermediatetrack,fromwhichtherewasachoicebetweentheacademicandvocationalroutes,anditwasonthesethattheresearchersfocused.Universitybeckonedfor212ofthem.Theremaining170chosevocationaltrainingandajob.Whenitcametothesecondroundoftests,Dr.Gollefoundthatthepersonalitiesofthosewhohadgonetouniversityhadnotchangedsignificantly.Thosewhohadundergonevocationaltrainingandthengotjobswerenotthatmuchchangedinpersonality,either—exceptinonecrucialrespect.Theyhadbecomemoreconscientious.Thatsoundslikeagoodthing,certainlycomparedwiththecommonpublicimageofundergraduatesasabunchoflazybones.Butchangesinattitudethattheresearchersrecordedwereratherworrying.Intheuniversitygroup,again,noneweredetectable.Butthosewhohadchosenthevocationalrouteshowedmarkeddropsininterestintasksthatareinvestigativeandenterprisinginnature.Andthatmightrestricttheirchoiceofcareers.Someinvestigativeandenterprisingjobs,suchasscientificresearch,are,indeedbeyondthedegreeless.Butmany,particularlyinGermany,withitstraditionofvocationaltraining,arenot.Theresearchersmention,forexample,computerprogrammersandfinance-sectorworkersascareersrequiringthesetraits.IfDr.Golleiscorrect,andchangesinattitudebroughtaboutbytheverytrainingGermanypridesitselfonarenarrowingpeople’schoices,thatisindeedamatterworthyofseriousconsideration.1、Whichofthefollowingcanbestreplace“beckonedfor”inParagraph2?A．Examined. B．Attracted.C．Organized. D．Recognized.2、Whatcanwelearnfromtheresearch?A．Thedegreelesshavenotchangedinpersonalities.B．Goingtouniversityisamind-broadeningexperience.C．Workingstraightafterschoolnarrowspeople’sminds.D．Collegestudentspridethemselvesontheireducation.3、Accordingtothelasttwoparagraphs,.A．collegestudentsenjoyaverygoodpublicimageB．theundergraduateshavechangedsignificantlyinattitudeC．thedegreelessaremuchbetteratdealingwithchallengingtasksD．peopleshowlessinterestininvestigativejobsduetovocationaltraining4、Whatistheauthor’sattitudetowardsthefinding?A．Concerned. B．Optimistic.C．Unclear. D．Sceptical.22．（8分）Exercisecouldnotonlybenefityourbody,butalsoimproveyourmemory,researchersfoundrecently.IntheirpaperpublishedonMonday,researchersfromtheUniversityofCalifornia,IrvineintheUnitedStatesandtheUniversityofTsukubainJapanintroducedtheirexperimentandconclusion.Scientistsinvited36volunteerswhowereintheirearly20stodo10minutesoflightexercisebeforetakingamemorytestinwhichtheywereshownpictureslikebroccoli(西蘭花)orpicnicbasketsandaskedtorecallthemlater.Thesameexperimentwasrepeatedwiththesamegroupofvolunteerswithoutexercising."Thememorytaskwasreallyquitechallenging,saidMichaelYassa,co-authorofthestudyandaneuroscientist(神經(jīng)科學(xué)家)attheUniversityofCalifornia,Irvine."Weusedverytrickysimilaritemstoseeiftheywouldrememberwhetheritwasthisexactpicnicbasketversus(對(duì)抗)thatpicnicbasket."Researchersalsoscannedbrainsofsomeoftheparticipantsduringtheexperiment.Theyfoundstrengthenedcommunicationbetweenregionsinvolvedinthestorageandrecollectionofmemoriesinbrainsofthosewhohadexercised.Thissuggestedthatjust10minutesoflightexerciselikewalking,yogaorTaiChimightincreasememorypower.Asallthevolunteersintheexperimentwererelativelyyoung,researchersarestillworkingtolookattheeffectsoflightexerciseonolderpeople."Ourfuturegoalistotrytodevelopanexerciseprescription(處方)thatcanbeusedbyolderadultswhomighthavedisabilitiesormobilityimpairments,butcanstilladoptverysimpleexerciserulesoflifeandbeableto,perhaps,delaycognitivedeclinetemporarily,"saidYassa.1、Whatdidtheresearchersfindfromtheexperimentmentionedinthetext?A．Regularexerciseisofbenefittothememoryofallpeople.B．Justashortperiodofexercisebetteryoungpeople'smemorypower.C．Olderpeoplecanalsoimprovetheircognitivepowerbyexercisingregularly.D．AUthevolunteersintheexperimentimprovedtheirmemorythroughexercise.2、Whywasthememorytaskquitechallenging?A．Thelimetosolvethequestionswastoolimited.B．ThequestionsaskedbythescientistswereloocompHeated.C．Theitemstobedistinguishedwereextremelysimilar.D．Thepeopleintheexperimentweredisabled.3、What'sthepurposeofthetext?A．Tosolveaproblem.B．Togivepracticaladvice.C．Topresentaresearchresult.D．Totellaninterestingsotry4、Whatcanbeasuitabletitleforthetext?A．AdvantagesofExercisingRegularlyB．ExerciseIsBeneficialtoBothYoungandOldC．ExerciseCanImproveOlderPeople'sCognitivePowerD．TenMinutesofExerciseaDayMightImproveMemory23．（8分）Aftertwoyearsofcarefulconsideration,RobertMcCrumhasreachedaconclusiononhisselectionofthe100greatestnovelswritteninEnglish.Takealookatafewinhislist:ThePilgrim’sProgressbyJohnBanyan(1678)AstoryofamaninsearchoftruthtoldwiththesimpleclarityandbeautyofBunyan’sprosemakesthisanEnglishclassic.RobinsonCrusoebyDanielDefoe(139)Bytheendofthe19thcentury,nobookinEnglishliteraryhistoryhadenjoyedmoreeditionsandtranslations.Thisworld-famousnovelisacomplexliteraturethatonecannotresist.Gulliver’sTravelsbyJonathanSwift(1726)Agreatworkthat’sbeenrepeatedlyprinted,JonathanSwift’sGulliver’sTravelscomesthirdinourlistofthebestnovelswritteninEnglish.ClarissabySamuelRichardson(1748)Clarissaisatragicheroine,pressuredbyherdishonorablefamilytomarryawealthymanshedislikes,inthebookthatSamuelJohnsondescribedas“thefirstbookintheworldthatshowstheknowledgeaboutthehumanheart”.TomJonesbyHenryFielding(1749)TomJonesisaclassicEnglishnovelthatgetsthespiritofitsageandwhosecharactersarewell-knownsincetheyhavecometorepresentthesocietyatthattime.EmmabyJaneAusten(1816)JaneAusten’sEmmaishermostoutstandingwork,mixingthebestpartsofherearlybookswithadeepsenseoffeelings.TheNarrativeofArthurGordonPymofNantucketbyEdgarAllanPoe(1838)EdgarAllanPoe’sonlynovel—aclassicadventurestorywithsupernaturalelements—hasfascinatedandinfluencedgenerationsofwriters.1、WhichEnglishbookhasgotthemosttranslationsbeforethe20thcentury?A．RobinsonCrusoe.B．Gulliver’sTravels.C．TomJones.D．Emma.2、WhatdoesSamuelJohnsonthinkwecanlearnaboutfromthebookClarissa?A．Alovestory.B．Quarrelsinafamily.C．Thehumanheart.D．Thespiritsofthelime.3、WhatmakesthecharactersinTomJonesfamous?A．Theirclassiclifestyles.B．Theirdifferentnationalities.C．Theirtypicalspiritsoftheage.D．Theirrepresentationofthesociety.24．（8分）ThoughGrantandIaretypicallymoretraditional,weactuallymetonline,throughFacebook.Asasinglemom,itwasalwaysanightmaretryingtodate,asIhavefullcustody(撫養(yǎng)權(quán))ofmydaughterandverylittle“me”time.Butthatwasn’ttheonlychallengewehadtoovercomeasacouple-wealsolivedfourandahalfhoursawayfromoneanother.Butwhentwopeoplearemeanttobe,lifesurehasaninterestingwayofbringingtwopeopletogether.Ninemonthsago,IrandomlyaddedhimonFacebook.Afterweeksofmessagingbackandforth,wehadourfirstfour-hourphonecall,andthelongcallledtoourfirstdate.Inthesixandhalfmonthsthatwedated,Igottowitnessanattractive,charmingbachelorbecomeapositive,lovingandselflessfathertomylittlegirl.Onthedayofourengagement(訂婚),hetookmydaughterandItobreakfast.Ihadafeelingthathewasplanningsomething.Butafteranxiouslyeatingbreakfast,hopingandprayinghewasn’tgoingtogetdownononekneeinthemiddleofaverybusySaturdaymorningbrunch,weleft.Then,wewalkedamileintothewoods.Itwasquitetheadventure.Finally,wegottoawoodenbridgeinthemiddleoftheforestandhegotdownononeknee.Afterproposingtome,Grantgotbacktoproposetomydaughter.Hesaid,“Adrianna,canIbeyourdaddy,topromisetoloveandprotectyoufortherestofyourlife?”Assoonashespokethosesweetwords,Ionceagainbrokedownintears.Mydaughterrepliedincompleteshock,“thankyou!”Hethenpresentedherwithabeautifulheartnecklace.Thenecklacesymbolizesapieceofhisheartthatshecanalwayscarrywithher.Ourbeautifullittlefamilyoftwohasbecomethree.MydaughterandIbothgotourfairytaleending.1、WhatchallengesdidtheauthorandGrantfaceasacouple?①Shehadlittletimetodate.②Theymeteachotheronline.③Therewasalongdistancebetweenthem.④Theyweretraditionalpeople.A．①②B．①③C．③④D．②④2、HowcouldtheauthorprobablydescribeGrant.A．Generousandgrateful.B．Humorousandgifted.C．Responsibleandcaring.D．Optimisticandpatient.3、Whydidtheauthorfeelanxiousonthedayoftheirengagement?A．Shehadnoideawhattheirfuturewouldbe.B．Shedidn’tknowhowtorespondtoGrant.C．ShewasafraidGrantwouldn’tacceptherdaughter.D．ShethoughtthatGrantwouldproposetoherinpublic.25．（10分）Forallthetechnologicalwondersofmodemmedicine,healthcare-withitsfaxmachinesandclipboards(寫字板)—isoutofdate.Thisoutdatederaisslowlydrawingtoacloseastheindustrycatchesupwiththeartificial-intelligence(AI)revolution.EricTopol,anexpertinheartdiseaseandenthusiastfordigitalmedicine,thinksAIwillbeparticularlyusefulforsuchtasksasexaminingimages,observinghearttracesforabnormalitiesorturningdoctors'wordsintopatientrecords.Itwillbeabletousemassesofdatatoworkoutthebesttreatments,andimproveworkflowsinhospitals.Inshort,AIissettosavetime,livesandmoney.ThefearsomepeoplehaveisthatAIwillbeusedtodeepentheassembly-linecultureofmodemmedicine.Ifitgivesa“giftoftime”todoctors,theyarguethatthisbonusshouldbeusedtoextendconsultations,ratherthansimplyspeedingthroughthemmoreefficiently.Thatisafineidea,butashealthswallowsanever-biggershareofnationalwealth,greaterefficiencyisexactlywhatisneeded,atleastsofarasgovernmentsandinsurersareconcerned.Otherwise,richsocietiesmayfailtocopewiththeneedsofageingandgrowingpopulations.Anextrafiveminutesspentchattingwithapatientiscostlyaswellasvaluable.TheAIrevolutionwillalsoenablemanagerialaccountantstoadjustandevaluateeveryaspectoftreatment.Theautonomyofthedoctorwillsurelybeweakened,especially,perhaps,inpublic-healthsystemswhichareduty-boundtocutunnecessarycosts.TheHippocraticOath(誓言)holdsthatthereisanarttomedicineaswellasascience,andthat“warmth,sympathyandunderstandingmayoutweighthesurgeon'sknifeorthechemist'sdrug”.There'slotsofsenseinit:thepatientsofsympatheticphysicianshavebeenshowntorecoverbetter.Yetasthesupplyofhumancarersfailstosatisfythedemandforhealthcare,thefuturemayinvolveconsultationsonsmartphonesandmeasurementsmonitoredbychatbots.Theconsideratelywarmedstethoscope(聽(tīng)診器),placedgentlyonapatient'sback,maybecomearelicofthepast.1、What'sDrTopol'sattitudetowardAI'scomingintomedicine?A．Concerned. B．Doubtful. C．Optimistic. D．Cautious.2、Whatdoestheauthorofthetextattachmoreimportanceto?A．Medicalcosts. B．Nationalwealth.C．Longerconsultation. D．Greaterefficiency.3、WhyistheHippocraticOathmentioned?A．ToprovethebrightfutureofAI.B．Toshowtheadvantageofahumandoctor.C．Toexplainmedicalequipmentismoreimportant.D．Toargueahumandoctorperformsaswellasarobot.4、Whatmaybethebesttitleforthetext?A．HealthcareandAI B．AIanditsapplicationsC．DoctorsandPatients D．DrTopolanddigitalmedicine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）IwasreallynervousthisyearbecauseIwasinanewclass.It1methatIdidn'tknowanyoneintheclass,But2Ididn'tknowanyone.Ihadthe3todosomethingIlove-peoplewatching.Thegirlsittingbehindmewasalwayslaughingandtalkinghappily.Shewasoneoftheveryfewpeoplewhomadeany4toacknowledgeme.Attheendoftheyear,wewere5todoabigopen-endedprojectwherethe6werebasicallytoreadsomething,thenwatchsomethingrelatedtoit,andthen7apresentationbasedonwhatwelearned.Onthepresentationday,thatgirl8infrontoftheclass,andtoldeveryonehowshehadreadabouteatingdisorders,becausesheherselfhad9withone.Asitwastoodifficultforhertotalkaboutit10,shehadmadeamovie,whereshehad11somepeopleabouttheireatingdisordersandhowtheyhadfeltand12themeventually.Afterthepresentation,almost13wasintears.Severalpeoplecommentedonhow14shewastostandupandtalkaboutit,andhowstrongshewastohavegotoverthedisorder.Inever15shewouldhaveaproblemlikethatbecauseshealwaysseemed16.Hercouragetotalkaboutsomethingso17inpublicandherstrengthtogetthroughherdifficultieshave18me.I’vealsolearnedhowdifficultitisto19people.Youneverknowwhattypeofpersonsomeoneisjustby20foraterm.1、A．pleasedB．confusedC．interestedD．scared2、A．sinceB．ifC．beforeD．unless3、A．honorB．rightC．chanceD．duty4、A．discoveryB．progressC．remarkD．a(chǎn)ttempt5、A．forcedB．requiredC．a(chǎn)llowedD．reminded6、A．instructionsB．purposesC．cataloguesD．references7、A．tryoutforB．makeuseofC．comeupwithD．lookforwardto8、A．turnedawayB．gotupC．lookeddownD．cameback9、A．stayedB．begunC．struggledD．mixed10、A．directlyB．swiftlyC．randomlyD．seriously11、A．informedB．consultedC．supportedD．interviewed12、A．ignoredB．overcomeC．improvedD．developed13、A．somebodyB．a(chǎn)nybodyC．everybodyD．nobody14、A．reliableB．braveC．patientD．generous15、A．expectedB．a(chǎn)dmittedC．suspectedD．concluded16、A．cheerfulB．honestC．curiousD．independent17、A．specificB．professionalC．complexD．personal18、A．comfortedB．inspiredC．persuadedD．relaxed19、A．a(chǎn)museB．impressC．judgeD．satisfy20、A．thinkingB．listeningC．communicatingD．observing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）Ifyou’veneverheardofanegg-layingmountain,youprobablydon’tknowaboutChanDaYa,1．fantasticcliff(懸崖)thatlaysstoneeggsevery30years.LocatedinChina’sGuizhouProvince,ChanDaYa,2．means“egglayingcliff”,hasbeenpuzzlinggeologistsfordecades.Thecliffhasaroughsurfacespottedwithdozensofroundandoval-shapedstonesofvarioussizes.Astheelements(自然環(huán)境)continuetoeatawayatthecliff,theharder“eggs”becomeevenmoreexposedand3．(eventual)fallout.Theegg-layingphenomenonofChanDaYa4．(consider)unique,sogeologistswhohopetocomeupwithan5．(explain)havehadtotraveltotheremotemountainousregion6．(study)itfirst-hand.Thelocalpeoplehaveknownabouttheegg-layingcliffforgenerations,andmanyof7．(they)frequentlyvisitittotouchthe“godeggs”forgoodluck.Inrecentyears,ChanDaYa8．(become)sopopularasatouristdestinationthatmostoftheeggshavebeensold9．profit.Thereareonlyabout70eggsinGulutoday,andanynewonesreadytofallofffromthecliffareoftenstolenbytreasurehunters.10．ChanDaYaisthelargestegg-layingcliffonMountGandeng,itiscertainlynottheonlyone.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處語(yǔ)言錯(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)漏字符號(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)的詞下劃一橫線，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）不記分。StartedinSeptemberof2003,smilecardsbeganappearingallaroundaworld、Theyaremarkerofabrandnewgameoftag,where"you'reit"becausesomeonehasdoneanythingniceforyou、Thenit'syourturntodosomethingniceforsomeoneelsebut,intheprocess,passthecardalong、Thiswasagameofpay-it-forward:makesomeonesmilewithoutgivingoutthename,leavebehindacardaskthemtokeepitgoing、It'seasyandfunny、Iskindnesstrulycontagious?There'sonlyonewaytofindout—jointhefun!Getyoursmilecards,readuponsomekindnessideas,andgetstarted!第二節(jié)書面表達(dá)（滿分25分）29．（25分）某英文報(bào)社正在開(kāi)展“環(huán)保”大討論，向你約稿。請(qǐng)以垃圾分類為主題，按照以下要點(diǎn)發(fā)表你的觀點(diǎn)：1.意義；2.現(xiàn)狀；3.建議注意：1.詞數(shù)100左右；2.文章標(biāo)題已擬好，不計(jì)入總次數(shù)。3.參考詞匯：垃圾分類garbageclassificationOnGarbageClassification________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Yours,LiHua

參考答案第一部分（共20小題，每小題1.5分，滿分30分）1、C2、B3