2021下半年北京市英语统招专升本一轮练习题【带答案】

2021下半年北京市英语统招专升本一轮练习题【带答案】学校:________班级:________姓名:________考号:________

一、阅读理解(30题)1.Secretaries,untilrecently,hadtodoalotofworknowdoneby______.A.A.machinesB.otherstaffC.servantsD.wives

2.PassageFour

Youhavebeenbadlyinjuredinacaraccident.Itisnecessarytogiveyouabloodtransfusionbecauseyoulostagreatdealofbloodintheaccident.However,specialcaremustbetakeninselectingnewbloodforyou.Ifthebloodistoodifferentfromyourown,thetransfusioncouldkillyou.

Therearefourbasictypesofblood;A,B,ABandO.Asimpletestcanindicateaperson'sbloodtype.Everybodyisbornwithoneofthesefourtypesofblood.Bloodtype,likehaircolorandheight,isinheritedfromparents.

Becauseofsubstancescontainedineachtype,thefourgroupsmustbetransfusedcarefully.Basically,AandBcannotbemixed.AandBcannotreceiveAB,butABmayreceiveAorB.Ocangivetoanyothergroup,henceitisoftencalledtheuniversaldonor.Fortheoppositereason,ABsometimescalledtheuniversalrecipient.However,becausesomanyreactionscanoccurintransfusions,patientsusuallyreceiveonly'saltorplasmauntiltheirbloodcanbematchedasexactlyaspossibleinthebloodbankofahospital.Inthisway,itispossibletoavoidanybadreactionstothetransfusion.

Thereisarelationshipbetweenyourbloodtypeandyournationality.AmongEuropeansandpeopleofEuropeanancestry,about42percenthavetypeAwhile45percenthavetypeO.TherarestistypeAB.Otherraceshavedifferentpercentages.Forexample,someAmericanIndiangroupshavenearly100percenttypeO.48.Agoodtitleforthispassageis______.

A.GettingBloodandPlasma

B.SpecialBloodandColors

C.HumanBloodTypes

D.TheBloodBankofaHospital

3.Thetrainerusuallygivestheanimalapieceofcandyorfruit__．A.A.whenitishungry

B.beforeitplaysatrick

C.whenitstartstoplayatrick

D.afterithasdonethetrick

4.Accordingtothetheoryofphotoperiodism,______.

A.birdsshouldmigrateinthemiddleofthewinter

B.longerdayscausechangesinthebodiesofbirds

C.seasonalchangesinthelengthofdaysdonotaffectmigration

D.increasingdaylightincreasesthedistanceofmigration

5.By"haveahandintheprocessoftransfer"theauthorreferstothosewho______.

A.controltheprocessoftransfer

B.areinvolvedintheprocessoftransfer

C.needhelpintheprocessoftransfer

D.makeabigfortuneintheprocessoftransfer

6.Dinosaurscientistscanprobablyknowwhetherdinosaursweregoodparentsby______.

A.watchingmanykindsofanimals

B.studyingdinosaurs"livingrelatives

C.followingthetracksleftbehind

D.workingondug-outdinosaureggs

7.Thisad.willbeveryhelpfulto______.

A.foreignbusinesspeople

B.foreigntravelers

C.Chinesepeople

D.ChinaDailyreporters

8.Thewordhammockinthispassagemeans______.

A.asuspensioncagewhichcanbeswungtoandfrointheair

B.aseathangingbytworopesfromthebranchofatree

C.asuspensionbridgeintheSouthAmericanrainforests

D.anethungbetweentwosupportsandusedasabed

9."Anintelligentmindneedsastrongbodytomakeituseful."means______.

A.ifyouwanttomakeyourstrongbodyUseful,youmusthaveanintelligentmind

B.inordertomakeyourintelligentmindusefulyoumusthaveastrongbody

C.tomakeyourstrongmindmostusefulyouneedastrongbody

D.ifyouhaveastrongbodyyouwillhaveastrongmind

10.Whatdidthegirl’senemyliketodo?

A.Talkingwithher.

B.Pointingoutherweakpoints.

C.Reportingtotheteacher.

D.Quarrellingwithher.

11.49.ByreferringtoSam'sbrokenbicycle,theauthorintendsto______.

A.illustratethewaystorepairhisbicycle

B.discusstheproblemsofhisbicycle

C.tellushowtosolveaproblem

D.showushowsimpleitistorepairabicycle

12.Ifsomeoneforgedyoursignatureanddrewmoneyfromyouraccount______.

A.thebankwouldalwayspaymoneytotheforger

B.thebankwouldn'tloseanymoney

C.youwouldn'tloseanymoney

D.youwouldn'tloseyourmoney

13.WhenMr.LindsayreceivedascholarshiptoMorehouseCollege,hewantedto______.

A.becomeasouthernrepresentativeinCongress

B.participateinthecivilrightsmovement

C.helpcandidatesgetelectedtogovernmentoffice

D.getagoodjobwithgoodpay

14.HowdidFrenchcivilizationcometoBritain?______

A.WilliamNormandyconqueredEngland

B.Anglos,SaxonsandJutescametoBritain

C.Scandinavianslivedinthenorthernandeasternpartsofthecountry

D.TheRomansstayedinBritain

15.Theairinthehousedoesnotremainfreshverylong.It'sbecause______.

A.thefreshaircan'tcomeintothehouse

B.thereisonlyalittlefreshaircominginandalittlewastegoingout

C.theairinthehousecan'tremainfresh

D.thehousegivesoffwastes

16.Whyisthegovernmentaskingforcommentsonthenewrules?

A.Becauseitistryingtofoolpeople．

B.Becauseitdoesn’tknowhowtomakerules．

C.Becauseitwantstobenice．

D.Becauseitwantstohearwhatthecitizenshavetosay．

17.Welearnfromthetextthat"thehonestones"inthefourthparagraphmostprobablyreferstocolleges______

A.thatareprotectedbycampussecurity

B.thatreportcampuscrimebylaw

C.thatarefreefromcampuscrime

D.thatenjoyverygoodpublicity

18.Theauthormentionsfood，toolsandpreciousmetalsandstonestogetherbecausetheyareall__________.查看材料

A.usefulitems

B.articlesofvalue

C.difficultthingstoobtain

D.materialobjects

19.Inthispassage,thewritermainly______.

A.describestwotypesofpeople

B.laughsattheunhappypeople

C.suggeststheunhappypeopleshouldgetridofthehabitsofunhappiness

D.tellspeoplehowtobehappyinlife

20.Asindicatedinthepassage,beingfreetoactonone'sopinion______.

A.meansthatonecanignoreotherpeople'scriticism

B.meansthatonecanimposehispreferencesonothers

C.doesn'tmeanthatonehastherighttodothingsatwill

D.doesn'tmeanthatonehastherighttochargeotherswithoutevidence

21.Theword"headquarters"inline5means______.

A.clothingB.officeC.mainofficeD.25percent

22.Theunderlinedword"them"inParagraph4refersto______.

A.thereaders

B.theeditors

C.thefoundphotographs

D.theself-publishedmagazines

23.Accordingtothepassage,whichofthefollowingwastheearliestkindof'exchangeofwealth?

A.Barteredgoods.

B.Fiatmoney.

C.Coincurrency.

D.Intangibleforms.

24.

25.PassageTwoExercise，everyoneadvises!Butimmediately，whenyoutry，yourunintotrouble．Thereissomuchcontradictory，sometimesincorrectadviceaboutexercisingthatbecomeconfused．Testyourselfonthefollowingtrue-falsequiz．Ittellyouwhatyouneedtoknow．

1．Toloseweightyoushouldalways“workupagoodsweat”whenexercising．

False．Sweatingonlylowersbodytemperaturetopreventoverheating；itdoesnothelpyoureduceweight．YoumayweighlessimmediatelyafteraWorkout，butthisisduetowaterloss．Onceyoureplacetheliquid，youreplacetheweight.

2．Youbummorecaloriesjoggingonemilethanwalkingthesamedistance．

False．Youuse，the8aRleamountofenergywhetheryouwalkorjogthemile，sinceinbothcasesyouaremovingthesanleweightthe8anledistance．Thespeeddoesn’tmatter．ofcourse，ifyoujogratherthanwalkfor30minutes，youllcovermoredistance，andthereforeburnmorecalories．

3．Ifyourbreathingdoesn’treturntonormalwithinminutesafteryoufinishexercising，youveexercisedtoomuch．

True．Fiveminutesorsoafterexercising，yourbreathingshouldbenormal，yourheartshouldn’tpounding，andyoushouldntexhausted．Beneficialexerciseisnottoodifficult，un-pleasant，andexhausting；itisenjoyableandrefreshing．

4．Walkingisoneofthebestexercises．

True．Walkinghelpscirculationofbloodthroughoutthebody，andthushasadirecteffectonyouroverallfeelingofhealth．

TheunderlinedphraseworkupinQuiz1means_________．

A.relieveB.developC.loseD.waste

26.Themoderncapitalismeconomycouldbewelldevelopedwhere______.

A.interregionaltradeissubstantial

B.peopleproducethesameorsimilargoods

C.systemsoftransportationareslowlyimproved

D.customerscanbuygoodsdirectly

27.Fromthepassageweknow______.

A.Rogerlikedhishairstyle.cutbytheyoungmanlasttime

B.theyoungmancouldcuthairindifferentstyles

C.theyoungmanwasgoodatcuttinghair

D.Rogerwantedtheyoungmantoknowhowbadlyhedidlasttime

28.SomepartsoftheEarthiswarmandsomearecoldbecause______.

A.alotoftheheatisreflected

B.therearecloudsanddustintheair

C.differentpartsoftheEarthreceiveandreflectdifferentamountofheat

D.differentpartsoftheEarthhavedifferentsourcesofheat

29.PassageFourItis2a．m．YoutooktoolongoverDinner，thecoastisstillacoupleofhundredkilometersawayanditisessentialtogetthatearlymorningferry．Andyourcarradiatorpipehassplit．Attimeslikethat，theDocumentsmakingupyourinsurancekitlyinginthefrontofyourearseemuseless．Thenearestphonewaspassedthreekilometersback，anditwouldbereasonabletoex．pectsomeDelayingettingbreakdownassistancewhenyouhavefinallyphonedthrough．Ifontheotherhand，youvegotaspareinthecar，fiveminutesworkshouldseeyouonyourwayagain．ThemajorityofbreakdownsDoinvolveminorandeasilychangedparts．Afewbasictoolsandtherightmixofspalesarewellworththespacetheytakeup．Buttosortoutwhichonesaremostlikelytobeneeded，andtobuythem，咖beexpensive．

Thatiswhythemotoringorganizationshavecomeupwithrentalkits．Forabout50penceaday(slightlymoretonon-members)theywillsupplyaboxedrangeofsparesforagivencar．Onreturningthekitthemotoristpaysforanythatareused，plusasmallfeeforrepacking．Depositsareabout￡20．

Itismuchbetter，however，toreducetheriskofbreakdownsbyseeingthatyourcarisproperlyservicedbeforesettingout．ParticularlywhenDrivingathighspeedoverlongDistancesinhotweather．

Finally，itmakessensetopurchaseasafetytriangleandanemergencyplasticwindscreenbeforeleaving．MakesureallyourfellowtravellersknowwhereyourDocumentsare；giveoneasparesetofkeys，andslipintothebackofyourwalletalargebanknotefortheemergencieswhereacreditcardwon’tDo．

InordertoavoidDisasteritwouldbewise_________．

A.tospendfiveminutescheckingthecarbeforeyouleave

B.tocarrysomeemergencyspareswithyou

C.tobuyacheapsetofsparesbeforeleaving

D.topreventallbreakdownsfromhappening

30.Thereasonwhysofewareleft-handed______.

A.hasnothingtodowithheredity

B.remainsoneofthegreatunsolvedmysteriesofscience

C.haslittletodowiththeworkingoftheirbrains

D.isthatleft-handersaremainlytwins

二、完型填空(20题)31.【B17】

A.wasB.hadC.happenedD.supposed

32.【C3】

A.afunnyB.apleasantC.aninterestingD.aneasy

33.【C4】

A.plantsB.treesC.rubberD.streets

34.(43)

A.helpedB.waitedC.appearedD.washed

35.【B2】

A.ancientB.modernC.pastD.future

36.(48)

A.whereB.thatC.whichD.wherever

37.【B6】

A.somebodyB.everybodyC.anybodyD.nobody

38.(81)

A.whoB.inwhichC.whichD.bywhich

39.(50)

A.votersB.winnersC.peopleD.guys

40.(54)

A.teamB.raceC.matchD.running

41.【B19】

A.thatB.whatC.thingD.as

42.31.A.asB.becauseC.whileD.so

43.(42)

A.willingB.reluctantC.unwillingD.probable

44.________查看材料

A.thereB.hereC.whereD.now

45.(85)

A.ministerB.headmasterC.managerD.president

46.(51)

A.keepB.stopC.standD.lie

47.28.（）A.A.decreasedB.raisedC.fellD.increased

48.(44)

A.hurtB.hurtingC.hurtsD.havehurt

49.35.A.veryB.terribleC.theD.some

50.根据以下内容，回答下列各题。Studentswillneed___21___alloftheirlanguageskillsinorder___22___understandtheread—ingselectionsinReadersChoice．Thebookcontainsmanytypesofselectiononawidevarietyoftopics．Theseselectionsprovidepractice___23___usingdifferentreadingstrategiestoextractthemessageofthewriter．Theyalsogivestudentspracticeinfour___24___readingskiUs：skim-ming，scanning，readingfor___25___comprehension，andcriticalreading．

Skimmingisquickreadingforthegeneralideasofapassage.Thiskindofrapidreadingis___26___whenyouaretryingtodecideifcarefulreadingisdesirableorwhenthereisnottimetoreadsomethingcarefully．

Likeskimming，___27___isalsoquickreading．However，inthiscasethesearchismore___28___．Toscanistoread29inordertolocatespecificinformation，whenyoureadtofindaparticulardate，ornumberyouarescanning．

Readingforthoroughcomprehensionis___30___readinginordertounderstandthetotalmeaningofthepassage．___31___thislevelofcomprehensiontherea(terisabletosummarizetheauthor’sideasbuthasnot___32___madeacriticalevaluationofthoseideas．

Criticalreadingdemandsthatareader___33___iudgmentsaboutwhatheorshereads．Thiskindofreadingrequirespostingand___34___questionssuchas“Doesmyownexperiencesup—port___35___0ftheauthor?”，“DoIsharetheauthorspointofview?”and“AmIconvincedbytheauthorsarrangementsandevidence?”21.（）A.A.usedB.usingC.touseD.use

三、语音(10题)51.(5)

A.industry

B.industrial

C.instruct

D.instruction

52.(3)

A.saysB.playsC.staysD.days

53.3.A.

championB.machineC.approachD.attach

54.5.Asince

B.cousin

C.within

D.violin

55.（）A.A.receipt

B.implication

C.empty

D.concept

56.(4)

A.whiteB.wholeC.whereD.when

57.

A.however

B.narrow

C.shallow

D.snowy

58.选出下列选项中划线部分读音不同的选项（）

59.（）A.A.view

B.flew

C.few

D.new

60.(2)

A.bridges

B.faces

C.cakes

D.pages

四、词汇与结构(20题)61.Accordingtotheperiodictable,______stillsomeelementsundiscovered.

A.thereseemtobe

B.itseemstobe

C.itseemsthat

D.hereseem

62.Insomewaystheseschoolsare(differ)______fromChinesemiddleschools.

63.Little_________thattheirplanhasbeenDiscovered．

A.didtheysuspect

B.dothesuspect

C.dotheysuspect

D.theysuspect

64.Thepolicechieforderedthatparking______onMainStreetduringtherushhour.

A.beprohibited

B.beprohibiting

C.isprohibited

D.wasprohibited

65.ItwasnotuntilthenthatIcametoknowknowledge______onlyfrompractice.

A.hadcomeB.hascomeC.cameD.comes

66.Mymotherboughtthatcoat______alowprice.

A.atB.inC.onD.with

67.Wemust______earlyinthemorningsoastocatchthefirsttrain.

A.setupB.setoutC.setaboutD.setaside

68.______roundthecity,wewereimpressedbythecity'snewlook.

A.TakenB.TakingC.TobetakenD.Beingtaken

69.Youcannotignorethesituationforever,onedayyouwillhaveto______theconsequencesofyouract.

A.lookuptoB.wakeuptoC.standuptoD.faceupto

70.9.Theinstructorhas______usoftomorrow'smeeting.A.toldB.saidC.informedD.reported

71.Automaticmachinescanonlydothejobsthey______todo.

A.haveaskedB.askC.havebeenaskedD.willask

72.Inmosturbanandsuburbanareaoftheworld,sickpeoplegotothedoctorfor______.

A.careB.diagnosisC.healingD.treatment

73.13.Wedon'tknowwhatthesurfaceofVenusmight______.

A.lookasB.looklikeC.lookoverD.lookabout

74.I_______heretwoyearsago．A.A.movedtoB.havemovedC.havemovedtoD.moved

75.EverystudentofEnglishneedsagooddictionary,butIcan'tafford______.

A.itB.thisC.thatD.one

76.Peterdidn'tunderstandtheproblemuntilI______him.

A.advisedB.acquaintedC.enlightenedD.communicated

77.Thepilotaskedallthepassengersonboardtoremain______astheplanewasmakingalanding.

A.seatB.seatingC.seatedD.tobeseating

78.Hedidn't______andsohefailedtheexamination.A.A.workenoughhard

B.hardworkenough

C.hardenoughwork

D.workhardenough

79.ThenovelTheDaVinciCode______agreatsuccessandwastranslatedinto44languagesin2004.

A.appreciatedB.wonC.enjoyedD.seized

80.Therewasan______ofdiscontentonherface.

A.appearanceB.sightC.shockD.expression

五、书面表达(1题)81.假设你是一个农村学生，进城看到河水被严重污染，请写一篇议论污染的日记。内容包括

以下几点：

1．河水颜色发黑，并发出臭味。

2．水里没有鱼，也没人游泳。

3．污染原因是附近的工厂往河里排放工业废水。

4．大家应保护环境，减少污染。

注意：

1．要符合日记的格式。

2．词数为l00左右。

六、写作(1题)82.Youaretowriteinnolessthan120wordsonthetopicDo"LuckyNumbers"ReallyBringGoodLuck?Youaretotakeaposition,eitherfororagainstthematter,andgiveyourreasons.YoushouldbaseyourcompositiononthefollowingChinesenotes.

有人认为某些数字会带来好运，有些人认为数字与好运无关，你的观点是什么?

参考答案

1.A

2.C本文讲的就是人的血型。

3.D动物做一个表演，就给它一些吃的东西。

4.B

5.B解析：haveahand表“插手，牵扯入”。

6.B根据倒数第二段第一句的后半句可知B项正确。

7.A

8.D解析：可以从文中第三、四、五段中找出hammock的特点。故答案为D。

9.B解析：文中第一段最后一句话表示身体的强壮对于智力起到了支持作用。

10.B解析：参见文章第一句。

11.C49．以Sam为例告诉读者如何解决问题。这也是全篇的中心。选项C是正确的。

12.C

13.D

14.A

15.B解析：根据常识判断，室内空气不新鲜是由于不流通所致。

16.D

17.B解析：从前一句可知。

18.D参考文章第一段第一句。

19.C解析：本文主要讲的是那些感觉不快乐的人处处冒犯别人，若长此以往，则只能处于被孤立的境地，所以他们应改变自己的习惯。

20.C解析：全文结尾句点明题意。

21.C解析：本题属词汇测试题。文章第二段第四句已提示：afamousworldcenterofeducation。headquarter是总部的意思。

22.D解析：根据后面的calledsimplyFound,wasbornonesnowynightinChicago可知Found是一个杂志的名字，them指代的是自己发行的杂志。

23.A解析：根据文中第一段第一行可知，最早的财富交换形式是物物交换。

24.D通读文章第二段，可知作者将老师比做医生，老师的作用象给病人看病一样，因而正确答案应是D项。

25.B

26.A解析：文章第7行起讲到在现代资本主义经济中，地域间的交换尤为重要，故选A。

27.D解析：阅读第四、五、六段可知，Roger是想让理发师知道上次他理的有多糟糕，故本题答案应选D。

28.C解析：本题考查的是对细节的把握能力。该题可以从文章第一段第三句DifferentpartsoftheEarthreceivedifferentamountsofheat推导出C选项。

29.B

30.B解析：最后一段第1句与B项一致。

31.B解析：上下逻辑关系。

32.D警察工作很繁忙，所以是不容易的。

33.BThese肯定指的是前面所说的假橡胶树。这段是用其他的例子说明其他很多东西我们都用的是代用品，橡胶树当然也同样可以。B项是正确的。

34.A解析：helpedinthekitchen意思是“帮厨”，与其后的Weplannedandcookedfor45peoplehotmeals…意思相吻合。

35.B解析：与picture-writing形成呼应关系。

36.A

37.B解析：因此就决定把每个人的腿都留在剧场外面。

38.C解析：现行词为事物，关系代词用that或which，且在后面从句中作主语，所以旁边不用介词。

39.B解析：如果没有任何候选人得到超过半数的选举人的选票，即538票中的270票，国会将选出胜出者。

40.B解析：获得第二名的是美国运动员DominiqueArnold，他在比赛中大部分时间都是处于领先地位，最后以12秒90的成绩完成这场比赛。

41.D解析：asitis“正是如此”，固定搭配。

42.D31．这里应用表示结果的连词。表明作者实际上做了什么。选项D是正确的。

43.A

44.C句法结构题。

【应试指导】where是一个关系副词，连接一个非限制性定语从句。

45.A

46.C解析：C选项stand在这里的意思是“短时间地停放车辆”，最合题意。D选项lie的意思是“坐落在……”，与题意明显不合，故不用。A选项keep指长时间保留，B选项stop表示很短时间的暂停放，均不够贴切。

47.D

48.C解析：本题属逻辑题。前文中的“apartofourbodieshurts”已提示答案。

49.C35．答案为C

此处测试句法。看填充处后面的mostdifficult，可以判定此处涉及的是“themost+多音节形容词”构成形容词的最高级结构，故选C为答案。

50.C

51.A解析：选项A画线字母读[e]，其他选项画线字母读[/\]。

52.A解析：A项划线部分发[e]，而B，C，D项划线部分发[ei]，因此选A项。

53.B选项B画线字母读[∫)，其他选项画线字母读[t∫]。

54.B画线部分读[n]；其他选项的画线部分读[in]。

55.A

56.B解析：选项B画线字母读[h]，其他选项画线字母读[w]。

57.AB、C、D三项的划线部分发[eu]，而A项划线部分发[au]，因此选A项。

58.D

59.B

60.C解析：画线部分读[s]，其他选项的画线部分读[is]。

61.A解析：本题为存在句辨析题。存在句和if作形式主语的句子有很大的区别。存在句主要表示某处存在某物，其基本句型为therebe结构，这种结构可以变化为：thereisgoingtobe，thereseemstobe等。it作形式主语，句子的真正主语是由that引导的从句。本句大意：根据元素周期表，似乎还存在一些没有发现的元素。

62.different

63.C

64.A这道题考查虚拟语气的用法。当句中出现表示“命令、建议、要求”等含义的谓语动词时，其后的宾语从句要用虚拟语气，即“should+动词原形”，should可以省略。同时，要注意这道题要用被动语态，因此为“(should)+be+过去分词”，答案为A项。

65.D客观真理始终用一般现在时来表示，句中knowledge是不可数名词，因此选D项。

66.A解析：本句句意是：我妈妈以低价买了那件大衣。

67.B解析：setout意为“出发；动身”。

68.A解析：此题考查分词的用法。句子的主语是we，所给动词是take“带领，带着”，而且主句的时态是一般过去时，因此空格处应选过去分词taken，表被动、完成。

69.Dlookupto“仰望，尊敬”；wakeupto“认识到”；standupto“忍耐，经受”；faceupto“勇敢地面对”。D项是正确的。句意为：“你不可能永远地忽视这种情形，总有一天你不得不面对你自己造成的后果。”

70.C答案为C。老师已经通知我们明天开会。inform.sb.ofsth．“告知某人某事”。其他三个选项的正确搭配应为：tellsb.sth.；saysth.；reporton/for。因此只有C能用在句中。

71.C解析：本题考查被动语态的用法。主语“automaticmachines”与“ask”是一种被动关系，故要用被动语态。

72.D解析：本题为词义辨析题。care意为“护理，关心”；diagnosis意为“诊断”；healing意为“(伤口)愈合”；treatment意为“治疗”。本句大意为：在世界上大多城市和农村，病人去请医生看病。

73.Blooklikesth．意为“看上去像”

74.D

75.D

76.C解析：本题测试动词辨义。advise意为“建议”；acquaint意为“使熟悉”；enlighten意为“启蒙，解答疑难”；communicate意为“交际”。本句大意为，直到我给彼得解答，他才理解了这个问题。

77.C解析：remain“保持”，后面的动词与主语之间是动宾关系，故用seated。若换成sit，则为remainsitting。

78.D本题为词序搭配问题。enough修饰名词时可放在所修饰的名词前面也可放在所修饰的名词后面，而当enough修饰形容词或副词时只能放在所修饰的词后面。本句大意为：他学习得不够努力所以考试失败。

79.C

80.D解析：expression意为“表情”；appearance意为“外表”。

81.