教师资格之中学英语学科知识与教学能力真题练习A卷带答案

教师资格之中学英语学科知识与教学能力真题练习A卷带答案

单选题（共50题）1、Whichofthefollowinghelpsassesslanguageperformances?A.AskingstudentstoreflectonwhatactivitiesattractthemmostB.AskingstudentsabouttheirattitudestowardsacertaingameC.AskingstudentstodrawpicturesaccordingtodescriptionD.Askingthestudentstodoaquizattheendofthelesson【答案】D2、Asateacher,weshouldtryto_______it_______toourstudentshowhelpfulacorrectlearningmethodis.A.get,aboutB.get;awayC.get;acrossD.get;off【答案】C3、请阅读短文，完成第小题。A.ThedegreeitofferstoallofitsgraduatesB.ThejobprospectsitopensupforitsstudentsC.ThemanagerialpositionsitprovidesforitsstudentsD.Thefacilitiesandequipmentitprovidesforitsstudents【答案】B4、Passage1A.AnexternalcamerachecksthatthecarisgoingproperlyB.ThecarwillautomaticallykeeptoitslaneC.TheseatbeltwilltightenwhenthedriverisfounddrowsyD.Thetechnologyofthealcoholodorsensorshouldbeimproved【答案】B5、请阅读Passage2，完成题：A.SonicB.SuperMarioC.PlatformerD.Beat-Them-Up【答案】D6、______nativetoNorthAmerica,cornhasnowspreadallovertheworld.A.InspiteofB.ThatitisC.ItwasD.Although【答案】D7、Inapre-listeningactivity,studentsneedtolearntocopewithsomeambiguityinlisteningandrealizethattheycanstilllearnevenwhentheydonotunderstandeverysingleword.Theaimofthisactivityistodeveloptheskillof.A.listeningfirspecificinformationB.listeningforgistC.listeningforstructureD.listeningforvocabulary【答案】B8、Teachersina/an_______classroomareencouragedtoshowapprovalforeachandeverycorrectperformancebytheirstudents,andthedrillsaredesignedtoproducesuccessforthestudents.A.Grammar-TranslationB.SituationalC.Audio-lingualD.Communicative【答案】C9、Therearetwokindsofmotiveforengaginginanyactivity:internalandinstrumental.Ifascientistconductsresearchbecauseshewantstodiscoverimportantfactsabouttheworld,that'saninternalmotive,sincediscoveringfactsisinherentlyrelatedtotheactivityofresearch.Ifsheconductsresearchbecauseshewantstoachievescholarlyrenown,that'saninstrumentalmotive,sincetherelationbetweenfameandresearchisnotsoinherent.Often,peoplehavebothfordoingthings.Whatmixofmotives--internalorinstrumentalorboth--ismostconducivetosuccess?Youmightsupposethatascientistmotivatedbyadesiretodiscoverfactsandbyadesiretoachieverenownwilldobetterworkthanascientistmotivatedbyjustoneofthosedesires.Surelytwomotivesarebetterthanone.ButasweandourcolleaguesargueinapapernewlypublishedintheProceedingsoftheNationalAcademyofSciences,instrumentalmotivesarenotalwaysanassetandcanactuallybecounterproductivetosuccess.Weanalyzeddatadrawnfrom11320cadetsinnineenteringclassesattheUnitedStatesMilitaryAcademyatWestPoint,allofwhomratedhowmucheachofasetofmotivesinfluencedtheirdecisiontoattendtheacademy.ThemotivesincludedthingslikeadesiretogetagoodjoblaterinlifeandadesiretobetrainedasaleaderintheUnitedStatesArmyA.Takingintoaccountapplicants'internalmotivesB.MakingthemfocusonthemeaningoftheirworkC.RelyingonwhatevermotivationaltoolsavailableD.Takingintoaccountapplicants'instrumentalmotives【答案】C10、Thevisitorshadmadesomuch_________thatMrWaterhadtospendseveraldayscleaningupafterwards.A.troubleB.disturbanceC.damageD.mess【答案】D11、请阅读短文，完成第小题。A.theauthorlivedaloneinthedormitoryB.therewereonehundredbutterflieslivinginthebushesC.thecardboardpaperwasleftonthestepsoastobewatchedD.theauthorfailedtostickthewornwingontothebutterflywithhisspit【答案】D12、Passage1A.TodiscernthelinkbetweenanalyticalthinkingandinsightsB.TodiscernconnectionbetweencloseattentionandinsightsC.TodiscernconnectionbetweencloseattentionandimaginationD.Totestpeople'scapacityforcloseattentionandabstractassociation【答案】B13、It’sMary’sownfaultifshefeels_______attheparty—shemakesnoefforttobefriendlytopeople.A.cutoutB.stoodoutC.leftoutD.madeout【答案】C14、请阅读Passage1，完成小题。A.HisstylecaterslargelytomodernspecialistsB.HiswritingsfailtofollowtheamateurtraditionC.HismusiccriticismmaynotappealtoreaderstodayD.Hisreputationasamusiccritichaslongbeenindispute【答案】C15、Themessagecametothevillagers（）theenemyhadalreadyfledthevillage.A.whichB.whoC.thatD.where【答案】C16、Ileftmypenonthedeskandnowit'sgone;who__________it?A.tookB.hastakenC.willtakeD.hadtaken【答案】B17、--Couldyoupleasetell__________?A.whatistheteacher'sofficeB.whattheteacher'sofficeisC.whereistheteacher'sofficeD.wheretheteacher'sofficeis【答案】D18、AstronomerHeidiHammer,aproponentofscienceeducation,conveysapassionforplanetarysciencethatherfascinatedaudiencefind___A.equivocalB.archaicC.timidD.infectious【答案】D19、--Icanmakeittoyourconcertaround9o'clocktomorrownight.A.havefinishedB.hadfinishedC.willbefinishedD.willhavefinished【答案】D20、Whentheteachergivesfeedbacktostudentsinteachingwriting,he/sheshouldNOT__________．A.makepositivecommentsonthegoodfeaturesofthewritingB.givewordssimplylike"good"or"verygood"tothewritingC.pointoutareasforimprovementD.expresshis/herpersonalopinionontheissuethatstudenthaswritten【答案】B21、Manypeoplebelievetheglarefromsnowcausessnow-blindness．Yet,darkglassesornot,theyfindthemselvessufferingfromheadachesandwateringeyes,andevensnow-blindness,whenexposedtoseveralhoursof"snowlight"．A.Snow-BlindnessandHowtoOvercomeItB.Nature'sCureforSnowBlindnessC.SoldiersintheSnowD.SnowVision【答案】A22、请阅读Passagel。完成小题。A.ShifttoOnlineNewspaper.AllatOnceB.CherishtheNewspaperStillinYourHandC.MakeYourPrintNewspaperaLuxuryGoodD.KeepYourNewspaperForeverinFashion【答案】C23、WhatpurposedoNOTpost-listeningactivitiesserve?A.HelpingstudentsrelatethetextwiththeirpersonalexperienceB.OfferingstudentstheopportunitiesofextendingotherlanguageskillsC.Practicingstudents'abilityofmatchingthepre-listeningpredictionswithcontentsofthetextD.Givingtheanswerdirectlytostudentsandnottoexplain【答案】D24、请阅读Passage2。完成第小题。A.ReportersfromtheWesternsocietiesshouldroutinelydeletemodernelementsinpicturestakenoftheindigenoussocietiesB.TheprimitiveculturesareinferiortothemoreadvancedWesterncultureC.ThewesternmediaarenotpresentingarealisticpictureofthefarawaysocietiesD.PeopleintheWesternnewsbusinessshouldtrynottochallengethewell-establishedwhitemiddle-classvalues【答案】C25、Thefactoryoperated_______untiltheorderwasfilled.A.attimesB.totheminuteC.daybydayD.aroundtheclock【答案】D26、请阅读短文，完成此题。A.theanalysisofthesalinityofoceanwatersB.thecausesofthevariationinoceanicsalinityC.theimportanceofthechangesinoceanicsalinityD.thedifferentformsofsaltsinoceanwaters【答案】B27、Thefunctionofthesentence―Waterboilsat100degreesCentigradeis______.A.interrogativeB.directiveC.informativeD.performative【答案】C28、Whatistheteacherdoingintermsoferrorcorrection?A.Helpingself-correctionB.IssuingindirectcorrectionC.ToleratingcorrectionD.Peercorrection【答案】C29、请阅读Passagel。完成小题。A.legacybusinessesarebecomingoutdatedB.cautiousnessfacilitatesproblems-solvingC.aggressivenessbettermeetschallengesD.traditionalluxuriescanstayunaffected【答案】C30、Whileteaching,weshouldkeepourclasrunningsmoothlyandA.thoroughlyB.efficientlyC.speedilyD.directly【答案】B31、Ifateacherasksstudentstofillintheblanksinapassagewith"that","which"or"whom",he/sheisleastlikelyfocusingongrammarat_________．A.lexicallevelB.syntacticlevelC.discourselevelD.morphologicallevel【答案】D32、Fluentandappropriatelanguageuserequiresknowledgeof_________andthissuggeststhatweshouldteachlexicalchunksratherthansinglewords.A.connotationB.denotationC.morphologyD.collocation【答案】D33、TheBritishMedicalJournalrecentlyfeaturedastrongresponsetowhatwasjudgedaninappropriatelylenientreactionbyamedicalschooltoastudentcheatinginanexamination.A.ExtensiveresearchhasbeendoneaboutthisphenomenonB.WehavesufficientdatatoprovethatpreventionisfeasibleC.WearesafetoconcludethatthisphenomenonexistsonagrandscaleD.Reliabledataabouttheextent,preventionandmanagementofthephenomenonislacking【答案】D34、Theprimaryfocusof________methodisonmemorizationofverbparadigms,grammarrulesandvocabulary.A.thegrammar-translationB.audio-lingualC.communicativeD.totalphysicalresponse【答案】A35、40yearsagotheideaofdisabledpeopledoingsportwasneverheardof.ButwhentheannualgamesforthedisabledwerestartedatStokeMandeville,Englandin1948bySirLudwigGuttmann,thesituationbegantochange.A.NewYorkB.LondonC.RomeD.LosAngeles【答案】C36、Advertiserstendtothinkbigandperhapsthisiswhythey'realwayscominginforcriticism．A.appreciativeB.trustworthyC.criticalD.dissatisfactory【答案】A37、Popularasitmightbe,thePresentation-Practice-Productionteachingmodelisnotconsideredappropriateinteaching_______A.phoneticsB.grammarC.VocabularyD.reading【答案】D38、Whenateacherasksstudentstobrainstormwhattheywillwriteaboutanunforgettabletrip,he/shemainlyfocuseson_______.A.ideasB.layoutC.styleD.feedback【答案】A39、WhichofthefollowingaboutteachingassessmentisinappropriateA.DiagnosticassessmentisakindoftestcardedoutafterateachingactivityB.Formativeassessmentshouldbestudent-orientedC.SummativeassessmentisoftencarriedoutattheendofatermD.Portfolios,dailyreports,anddeliveringspeechesareallformativeassessment【答案】A40、Thechiefmanagerisadeterminedman.Youneverfindhim_________whenhemakesadecision.A.inasuddenB.inadilemmaC.inahurryD.inaflash【答案】B41、Whenteachinggrammar．“Youareastrangerinthistown．”and“Apolicemanwasaskingsomequestions．”aretwoexamplesofusing_________．A.mimesB.gesturesC.chainofeventsD.createdsituations【答案】D42、Inordernottobecheated,Internetusersshouldbearitinmindtosurfa__________website.A.briefB.legalC.thoroughD.straight【答案】B43、请阅读短文，完成此题。A.MostAmericanstudentscheatinexamsbeforetheyenteruniversitiesB.MostAmericanstudentsenteringtheuniversitiesadmittheyhavecheatedC.HalfofstudentsenteringtheuniversitiesadmittocheatingontheirhomeworkD.ThereisacademicdishonestyamongstudentsenteringtheUSUniversity【答案】D44、Themostsuitablequestiontypetocheckstudents′comprehensionanddeveloptheircriticalthinkingis_________．A.rhetoricalquestionsB.referentialquestionsC.closequestionsD.displayquestions【答案】B45、Being__________ofmoney,shemanagedtosaveenoughforaholiday.A.economicB.economicalC.economicsD.economies【答案】B46、IlookbackonthispleasantholidayinBeijingwith__________pleasure.A.anythingbutB.allbutC.everythingbutD.nothingbut【答案】D47、Whichofthefollowingactivitiescanbeusedtocheckstudents′understandingofdifficultsentencesinthetextA.ParaphrasingB.Blank-fillingC.Story-tellingD.Summarizing【答案】A48、Theexpression"AsfarasIknow..."suggeststhatpeopleusuallyobservetheMaximof__________intheirdailyconversations.A.QuantityB.QualityC.RelevanceD.Manner【答案】B49、Thebestgroupingofteachingwhenthestudentsaregiventhetasktodesignaposterforaschooleventis__________.A.pair-workB.groupworkC.one-to-oneD.individual【答案】B50、Teachingactivitiesmustbebasedonthestudents'cognitivedevelopmentlevelandtheexistingexperiencedknowledge,thus,students'personalknowledge,students'A.gameactivitiesB.labouractivitiesC.attitudesD.directexperience【答案】D大题（共10题）一、根据题目要求完成下列任务。用中文作答。在教学过程中，强调语法服从功能，重视学生表达的流利性和得体性，属于哪种教学法?(5分)该教学法有什么优点和不足?(15分)【答案】在教学过程中，强调语法服从功能，重视学生表达的流利性和得体性，属于交际法。交际法的优点：①有利于培养学生的语言运用能力和学以致用的意识。②强调学生的主动性和互动性。③课堂上的交际活动以学生为主体，有利于激发学生的学习兴趣、钻研精神和自学能力。交际法的不足：①交际法要求根据学生需要来选择教学内容，确定教学要求。这对于我国实际情况来说是不现实的。我国的学生学习英语不是目前生存的需要，没有融合型动机，大部分学生的需求只是知识和能力的提高。②交际法主要适合小班型教学，学生使用语言的机会多。而我们国家目前中学的班型都在45人左右，甚至更多，学生使用外语交流的机会相对较少，不利于表现出交际法的优势。二、根据题目要求完成下列任务，用中文作答。简述scanning的含义并举一例说明其基本用途。写出训练该项技能时的三条注意事项，?并用英语写出两句相关的教师指令语。【答案】(1)scanning的含义：scanning译为“找读，扫读，寻读，查读”，是一种快速阅读方式，其目的是从较长的文字资料中查寻特定的细节内容。寻读要求即快又准，要在短时间内准确地找到目标。基本用途：例如：在教学“NelsonMandela—AModemHero”一课时，可以通过设置寻读活动“Askstudentstoscanthepassagein5minutesandcompletethechan-ATimelineofElias’Life”．让学生在5分钟内扫读文章，然后根据时间顺序填写表格。通过寻读活动，可以帮助学生了解文章特定信息，提高学生的阅读速度。找读是教师需要训练学生提高的阅读能力之一。(2)注意事项：①在设计寻读活动时，要有明确的时限规定，以促使学生在较短的时间内完成任务。②在设计寻读活动时，要引导学生借助关键词快速锁定寻读目标，切忌从头逐字地寻找，导致学生的寻读技巧未得到有效的培养。③在设计寻读活动时，教师的指令要清楚，不能过于简单，这会造成学生不清楚做什么的局面，从而影响阅读效果。指令中应包含学生应在多长时间内(timelimit)，通过怎么读(how)，读出什么(what)等信息。教师指令语：①ScantheParagraphs3-5in5minutestogetenoughinformationtofillthetable．②Scanthefirsttenlinesin3minutesandanswerthefollowingtwoquestions．三、以下片段选自某课堂实录，请分析该教学片段并回答下列问题：教学片段：老师：同学们上午好！今天我们来讲宾语补足语。英语中，有些及物动词后接宾语时，还需要加一个词或短语来补充说明宾语的情况，这样的词或短语叫做宾语补足语。那么请大家从课文中找出几处关于宾语补足语的例句。e.g.NowwhenpeoplerefertoEnglandyoufindWalesincludedaswell.?Sototheirsurprise,thethreecountriesfoundthemselvesunited.同学们可以看出，例句中included是作find的宾语补足语，united是作found的宾语补足语。形容词作宾语补足语时，通常是放在make,get,find,keep,let等动词的后面。接下来教师通过“辨识-拓展-理解”的步骤依次具体讲解宾语补足语的其他用法。语法教学的课堂模式主要有哪些？教学中应该遵循哪些语法教学的原则？【答案】语法知识教学的常用方法是演绎法和归纳法。演绎法：教师首先展示语法规则并举例说明，然后由学生将所展示的语法规则运用于新的语言环境。其优点是易于理解，节省时间。缺点是教师在非语境化中孤立讲授语法，让学生大量机械练习。归纳法：学生首先接触的是包含语法规则的真实上下文，然后根据上下文信息归纳出语法规则。（由个别到一般，由特殊到一般的推理教学方法；教师以语言例子作为开端去引导学生找出规则）其优点是在语境中理解语法的规则并深化学生对用法的理解。四、设计任务：请阅读下面学生信息和语言素材，设计一节课的教学方案。教案没有固定格式，但须包含下列要点：·teachingobjectives·teachingcontents·keyanddifficultpoints·majorstepsandtimeallocation·activitiesandjustification教学时间：45分钟学生概况：某城镇普通中学高中一年级第一学期学生，班级人数40人。多数学生已经达到《普通高中英语课程标准》（实验）五级水平。学生课堂参与积极性一般。语言素材：Pompeii:ThefactsAugust24,intheyearAD79,begannormallyforthepeopleinPompeii,atownatthefootof?MountVesuvius.Farmerswentouttotheirfields,shopkeeperssetouttheirgoodsforsale,craftspeople?openedtheirworkshopsandtherichwalkedtothepublicbathswhiletheirservantscleanedtheirhouses?andwashedtheirclothes.Unfortunately,theendofthedaywasfarfromnormalforthe20,000citizensof?Pompeii.Earlyintheafternoon,whenmanypeoplewererestingfromtheheatoftheday,MountVesuvius?erupted.Millionsoftonnesofash,lavaandpumicepouredontothesurroundinghillsideandoverthe?townofPompeiiandothertownsandvillages.ByeveningPompeiiwasburiedunder3-5metersofashand?mud,andatleast2,000men,womenandchildrenwereburiedwiththeirtown.【答案】Teachingobjectives:（1）KnowledgeobjectiveStudentscanmasterthewordsaboutvolcanoeruptionsandtheusageof"erupt".（2）AbilityobjectiveStudentscandescribenaturaldisastersandpastevents.（3）EmotionobjectiveStudentscanspeakEnglishconfidentlyinfrontoftheclass.TeachingContents:ThepassageisabouthowthecityofPompeiiwasdestroyedbyvolcanoeruption.Teachingkeypoints:Studentscanmasterthewordsaboutvolcanoeruptionandknowhowtodescribeanaturaldisaster.Teachingdifficultpoints:Studentscandescribeanaturaldisasterbyusingthewordsandsentencestructurestheyhavelearned.Teachingprocedures:Step1Lead-in（5minutes）五、根据题目要求完成下列任务，用中文作答。下面是两位教师的课堂教学片段：Unit1学习的是比较级，其中有三个单词：fat(ter)，strong(er)，heavy(heavier)片段一：老师甲在讲到fat这个词时，让学生来造句，有很多学生站起来，说了这样一句：Student：LiMingisfatterthanhie．Teacher：Why?Student：He’sheavierthanme．全班同学哄堂大笑，这位学生很难为情，但老师下面的一句话马上将气氛缓和了过来：Teacher：ButIdon’tthinkhe’Stoofat．He’Sstron9．片段二：老师乙在教完这一课的内容后，组织学生寻找合作对象自编对话，一名学生站了起来想找一位较胖的学生来担任“比较对象”。有一位长得胖乎乎的学生自告奋勇站起来，于是发生这样一段对话：Studentl：Whoisfatterthanme?Student2：Iam．Iamfatterthanhim．Teacher：Good!Ithinkyouarefatter．Youaretherightperson!【答案】(1)两位老师在处理一个相同的话题时运用了两种截然不同的方法，毋庸置疑，前者的处理有利于学生的学习，而后者的处理则会对心理比较脆弱的学生产生负面的影响。(2)教学中总是会碰到一些意外，它们是教学中的不确定因素，它的产生在学生的情理之中，教师的意料之外。如何巧妙地处理，直接关系到师生间的良好互动和教与学的有效结合。上述案例中，第一位教师巧妙地避开了该学生的尴尬和自卑，用一个“strong”把学生的短处变成闪光点，把课堂气氛推向了一个高潮。由开放的导入而生成的丰富的学生资源，打破了旧课堂秩序的平衡，教师要在变动不已的课堂中发现、判断、整合信息，随时把握有价值的意外，推动教学的发展与生成。保护学生开口说英语的积极性，保护学生上课时愉悦的心情．学生们才能最大限度地发挥潜能，不受限制地发挥想象力，才会有创造语言的欲望，我们的教学才会有一石数鸟的意外收获。(3)语言教学在很大程度上依赖于学生与教师之间的团结、合作以及相互支持的人际关系．而这种关系时刻都受到彼此情感的影响。恰当、合理地使用语言，有助于沟通情感，增进友谊和相互尊重，改善这种人际关系，同时还可以创建一种和谐的语言活动氛围，努力产生浸润性的效果，让学生愉快地沉浸在英语的氛围中。在课上，教师要善于调控学生的情感态度，注意言语的导向，建立融洽、民主、团结、相互尊重的氛围，创造有利于学习的心理状态，形成积极的学习态度，让学生学得主动，学得愉快。六、根据题目要求完成-FN任务，用中文作答。在语法教学中，语法练习的形式有哪几种(10分)?请对任意两种练习形式进行举例说明(10分)。【答案】(1)语法练习的形式①机械型练习。这类练习的作用是帮助学生熟记、掌握语法规则和形式，一般使用互不连接的单独结构、短语或句子。常见的练习形式有填空、选择和替换等。②意义型练习。这类练习强调形式的正确理解和输出，但同时涉及了意义。练习仍然使用互不连接的单独结构，答案通常是确定的。常见的练习形式有：基于意义的填空或选择、配对、改错及合并句子、汉译英或英译汉等。③交际型练习。这类练习最有使用价值和趣味性，它强调以交际为目的的意义输出或理解，在交际过程中同时注意结构的运用。常见的练习形式有：两人活动、小组讨论活动、角色扮演活动、头脑风暴活动等。(2)练习举例①机械型练习——替换练习T：I’mtryingtofindabookinthebox．S：I’mtryingtofindabookinthebox．T：shell．S：I’Hitryingtofindabookintheshelf．T：bed．S：I’mtryingtofindabookinthebed．②意义型练习——汉译英我打算在我家乡买套房子。七、根据提供的信息和语言素材设计教学方案，用英文作答。设计任务：请阅读下面学生信息和语言素材．设计20分钟的英语写作教学方案。该方案没有固定格式，但须包含下列要点：·teachingobjectives？·teachingcontents？·keyanddifficultpoints？·majorstepsandtimeallocation？·activitiesandjustifications？教学时间：20分钟？学生概况：某城镇普通中学初中二年级（八年级）学生，班级人数40人，多数学生已经达到《义务教育英语课程标准（2011年版）》三级水平。学生课堂参与积极性一般。语言素材：3aReadthethreenotes.Matcheachnotewiththecorrectsituation.？_______Thank-younoteforagirl.？【答案】TeachingContents:Thematerialisaboutwritingathank-younote.TeachingObjectives:(1)KnowledgeobjectiveStudentscanbemorefamiliarwiththetopicof"thanks"andknowhowtoexpresstheirthankstoothers.(2)AbilityobjectiveStudentscanwriteathank-younotelogicallyanduseittoexpresstheirthanks.O)EmotionalobjectiveStudentscanhavetheawarenessofexpressingtheirthanksafterothers'help.TeachingKeyandDifficultPoints:Studentscanmasterthemethodsandproceduresofwritingathank-younote.MajorSteps:Step1Pre.writing(7minutes)Atthissteptheteacherwillaskstudentstodothreeactivities.Activity1:SamplereadingStudentswillbeaskedtoread3a,andmatcheachnotewiththecorrectsituationbythemselves.八、根据题目要求完成下列任务，用中文作答。任务型教学是新课标所倡导的一种教学模式。你认为这种教学模式与传统的英语教学方法在哪些方面有着明显的不同?(20分)【答案】传统的英语教学多使用3P模式，即教师先呈现新知识，学生操练巩固所学知识，最后学生运用所学知识进行交际表达。而任务型教学法是教师首先提出任务，学生执行完成任务，最后学生展示任务。二者的不同之处主要表现在以下几个方面：(1)教学的目的不同。传统教学方法注重语言知识的讲授，强调培养学生的读、写技能；而任务型教学法重视学生的情感因素，强调通过任务