2021年辽宁省大连市普通高校对口单招英语自考模拟考试(含答案)

2021年辽宁省大连市普通高校对口单招英语自考模拟考试(含答案)学校:________班级:________姓名:________考号:________

一、单选题(50题)1.Busyastheyare,parentsshould______atleasttwohourstospendwiththeirchildren.

A.setoutB.setawayC.setasideD.setoff

2.Sendmyregardstoyourwifewhenyou__________home．

A.wroteB.willwriteC.havewrittenD.write

3.tosunlightfortoomuchtime,asthedoctorssay,willdoharmtoone‘sskin.

A.Beingexposed

B.Havingexposed

C.Exposed

D.Afterbeingexposed

4._____cryingsadly,heraisedhisheadandlettearsstreamdownhisfaceonpurposeA.TobeseenB.SeeingC.ToseeD.Havingseen

5.Sobadly______inthecaraccidentthathehadtostayinhospitalforseveralweeks.

A.didheinjureB.heinjureC.washeinjuredD.hewasinjured

6.Notuntilthisterm______torealizehowimportantthissubjectistohisfuturecareerasadiplomat.

A.hebeganB.didhebeginC.hehasbegunD.thathehasbegun

7.Thesenationalparksareveryimportantforpreservingmanyanimals,whichwouldruntheriskofbecomingextinct.

A.insteadB.thereforeC.neverthelessD.otherwise

8.______yourhomeworkandmakesurethatyoudon't______anymistakes.

A.Do;doB.Make;makeC.Make;doD.Do;make

9.Itisreportedthatmanyanewhouse_______atpresentinthedisasterareaA.arebeingbuilt

B.werebeingbuilt

C.wasbeingbuilt

D.isbeingbuilt

10.Thatistheonlywaywecanimagine_______theoveruseofwaterinstudents‘bathrooms.

A.reducingB.toreduceC.reducedD.reduce

11.Thenovelwrittenbytheauthor_______well,butfiveyearsagronoonecouldhaveimaginedhowgreatarolehe_______intheliteraryworldA.sells;wastoplay

B.selling;wasplaying

C.sold;hadplayed

D.sell;isplaying

12._______manytimes,hefinallyunderstoodtheproblem.

A.ToldB.TellingC.HavingtoldD.Havingbeentold

13.12．Itwasthetraining_______hehadatschool_______madehimagoodjumper．

A.what;whatB.that;thatC.what;thatD.that;had

14.—That'smewhenIgotmarried.SeewhatIlooklikenow!—Whynotgoonadiettogetinto______?

A.shapeB.formC.appearanceD.body

15.Mr.Black,ournewEnglishteacher,isstrict______kind.

A.orB.butC.withD.aswell

16.—What'sthechanceofthere______anelectionthisyear?—Ihavenoidea.

A.isB.tobeC.beingD.be

17.Iwonderhowmuch______.

A.thatcarwasB.wasthatcarC.isthatcarD.thatcaris

18.______youmayberight,Ican'taltogetheragree.

A.WhileB.AsC.ifD.Since

19.TheheavysnowcouldnotkeepUS_________goingouttowork．

A.onB.upC.uponD.from

20.Thebankisreportedinthelocalnewspaper,_______inbroaddaylightyesterday.

A.beingrobbed

B.havingbeenrobbed

C.tohavebeenrobbed

D.robbed

21.—TheremustbeadozenpensinthishousebutIcanneverfindonewhenIneedthem.—Keeplooking.______issuretoturnup.

A.OneB.ItC.ThatD.This

22.Myfather______mebysayingthatIcouldwininthespeechcontest,soItookpartinit.

A.discouragedB.encouragedC.preventedD.asked

23.Little_________thattheirplanhasbeenDiscovered．

A.didtheysuspect

B.dothesuspect

C.dotheysuspect

D.theysuspect

24.Finallyhegottimeforaglance______thisreport.

A.offB.roundC.onD.at

25.—Oh,Mary!YoushoulddoyourworkinsteadofsittingherewatchingTV.—______.

A.That'snotaverygoodidea.

B.TVproducesgoodinfluenceonchildren.

C.Whatmakesyousaythat?

D.YousaidTVwaseducational.

26.Noconclusionhasbeen______yet.

A.achievedB.reachedC.attainedD.arrived

27.--Ifyouareofferedatriptothemoon,______it?--Ofcourse.Whynot?

A.didyouaccept

B.areyougoingtoaccept

C.willyouaccept

D.wouldyouaccept

28.Hewasamanofstrongfeelings,______normallylayhiddendeepinsidehim.

A.itB.thatC.thoseD.which

29.Theyrequiredthatallthenecessarydocuments______tothepresident'sofficebeforetheendofthismonth.

A.behanded

B.mustbehanded

C.shouldhandin

D.hadbeenhandedin

30.Wemust__earlyinthemorningsoastocatchthefirsttrain.

A．setup

B．setout

C．setabout

D．setaside

31.She'sfainted.Throwsomewateronherfaceandshemay______.

A.comeroundB.comebackC.comeagainD.comeout

32.Mary，_________here——everybodyelse，staywhereyouare．

A.comeB.comesC.tocomeD.coming

33.Tomwasabouttoclosethewindows_______hisattentionwascaughtbyabirdA.whenB.suddenlyC.andD.till

34.Icanneverforget______thefamousactressduringhervisittoourschool．

A.havingbeenmetB.tomeetC.tohavemetD.meeting

35.Sicknessdeprivedme______thepleasureofseeingyou.

A.fromB.ofC.outofD.with

36.TomandJackarebothveryclever._________,Tomis____________Jack.

A.Allinall;asacleverboyas

B.Inotherwords;ascleveraboyas

C.Thatistosay;asacleverboyas

D.Inword;ascleveraboyas

37.—Theeducationsystemratherthantheteachers______toanswerfortheoverburdenonthestudents—IagreeIhopethereform.beingcarriedoutinourcountrywillhangaboutthe_____results.

A.are;desiredB.is;desiredC.are;desiringD.is;desiring

38.Newtypewriterscostabout________priceofthesecond—handones．

A.threetimesthe

B.athreetimes

C.thethreetimes

D.threetimesa

39.______hecome,theproblemwouldbesettled.

A.WouldB.ShouldC.ShallD.If

40.Heistooweakto______theheavybox.

A.riseB.putC.raiseD.arise

41.While______ajob,thegraduatestudentgotanoffertostudyabroad

A.appliedforB.applyingtoC.appliedtoD.applyingfor

42.Haveacigarette,______?

A.willyouB.don'tyouC.doyouD.aren'tyou

43.Notuntilhelefthishome_______toknowhowimportantthefamilywasforhim.

A.didhebeginB.hadhebegunC.hebeganD.hehasbegun

44.CountriesthattraditionallyneverallowedforeignstudentstostayandworklikeGermanyortheUnitedKingdom—arefacingtheirownlabor______ininformationtechnologyandrelaxingtheirimmigrationlaws.

A.cutsB.shortagesC.weaknessesD.imports

45.Theproblemwassettledtothecompleteofthem,sotheydidn‘tcomplain.

A.amazementB.satisfactionC.disappointmentD.attraction

46.—Hasthewalletbeenreturnedyet?—No，butweexpect______anydaynow.

A.toreturnit

B.ittoreturn

C.ittobereturned

D.itreturned

47.Thesquirrelwasluckythatitjustmissed_______.

A.catchingB.tobecaughtC.beingcaughtD.tocatch

48.______today,bewouldgettherebyFriday.

A.Wereheleave

B.Wasbeleaving

C.Werehetoleave

D.Ifheleaves

49.WewereoverjoyedatthenewsofChina__________anotherman-madesatel1ite．A.startingB.1aunchingC.fightingD.shouting

50.Whathedescribedasonlya______detailIthoughtwasthemostimportantpartoftheplan.

A.commonB.plainC.justD.mere

二、补全对话(10题)51.请在第_____处填上正确答案。

52.57请选择最佳答案填入()

53.59.Peter:Hello,Frank!______?Frank.Prettygood.Oh,Frank,howareyoudoingwithyourassignment?

54.Ⅴ.DailyConversation(10points)Direction:Pickouttheappropriateexpressionfromtheeightchoicesandcompletethefollowingdialoguebyblackeningthecorrespondingletterontheanswersheet.A.That'sverykindofyou.B.WhatcanIdoforyou?C.Pleasetakeiteasy.D.Yes,butwhy?E.CouldIhaveyourname.F.Pleasegivemybestregardstoyourfamily.G.Buthepannedto.H.Howaboutgoingtothemovie?56.Tony.IsthereanythingIcandoforyou?Tom:______,butIcanmanageitmyself.

55.根据中文提示，将对话中缺少的内容写在横线上，这些句子必须符合表达习惯。打句号的地方，用陈述句;打问号的地方，用疑问句。提示：Alice来看望Bill。他们有一年未见。Alice说她三天前才到，要在此地待一个月。Bill说，说实在的，他很想念Alice，并邀请她喝咖啡。Bill:Comein,please?Alice:Thankyou.Bill:(1)Howhaveyoubeenlately?Alice:Verywell.Andyou?Bill:I'mwell,too.Alice:(2)Ijustdropinonyou.Bill:It'sverykindofyou.(3),Imissyouverymuch.Alice:SodoI.Bill:(4)?Alice:No,thanks.I'llhaveanappointmentatfour,andI'vegottogo.Bill:Mustyougososoon?Alice:(5).I'llsurelyvisityouagain.

56.59请选择最佳答案填入()

57.58.Mary:Oh,Lucy!Somethingterriblehappenedonme.

Ifelloffmybikeandhurtmyrightleg.Lucy:Didyou?______.Howdidithappen?

58.第55题________查看材料

59.Linda：Hello!ThisisLindaspeaking.Chris：Hello，Linda，thisisChris._______66________thisFridayevening?Linda：Yes，why?Chris：There‘sagoodconcert，andI’vegottwotickets.Iwonder________67_______.Linda：That‘sgreat!_________68_________?Chris：7o‘clock.Buthowabout_________69__________at6：45?Linda：OK.IthinkIcanmakeit.Chris：Aftertheconcert，________70_________，shallwe?Linda：Wonderful!Whydon‘twegotoaChineserestaurant?Chris：Whynot?OK，seeyouFriday.Linda：Seeyouthen.Bye!66.________

60.John:Hello,I’mJohn.Ireadintheposterthatyou’relookingforastudenttoworkasalanguageassistant.Clerk:__________Areyouinterestedinthejob?John:Ithinkso.ButbeforeIapply,couldyoutellmemoreaboutthework?A.Howareyou?B.Yes,weareC.Hello.D.That’sright.

三、完型填空(10题)61.（）查看材料

A.cuttingB.hammeringC.wavingD.Circling

62.34.__________A.payB.ageC.familyD.life

63.请在第_____处填上正确答案。

A．had

B．enjoying

C.making

D．lasting

64.32（）

A.beautifulB.uglyC.politeD.practical

65.(72)

A.knowledgeB.remarksC.materialsD.information

66.(57)

A.officialsB.parentsC.expertsD.schools

67.27.________A.setB.machineC.TVD.program

68.(51)

A.canB.unableC.cannotD.able

69.(50)

A.beingB.gettingC.doingD.remaining

70.根据下列材料回答下列各题。

ResearchshowsthatByusingcomputers，studentsBecomeBetterproblemsolversandBet—tercommunicators．Overanetwork，using___21___andsharingflies，studentshavethechancetocollaborateandwork___22___withotherclassmates，peers，andteachers．Networkingelec—tronicallycan23learnerscreate，analyze，andproduceinformationandideasmore24andefficiently．Networkingpeople“puttheinspiringandusablesetoftools___25___reachofthemassofcomputer___26___，empoweringthemto___27___BeyondsimplyprocessinginformationtoDesign，publish，andexpress”(Mello，1996)．Throughthis___28___electronicaccesstotheworldaroundthem，students’socialawarenessand___29___increase．Networking___30___themfromthelimitationsof___31___writingtoolsthatofteninhibitandrestrictwritingprocesses．Learningisthen___32___fromatraditionalpassive—listeningexercisetoanexperi-enceofDiscovery，exploration，andexcitement．StudentscanBeginto___33___theirfullpoten—tialwhen__34__areempoweredtocontributeandcollaborateasateamtoaccomplishtheirwritingtasks35effectively．

21.（）A.A.1etterB.e-mailC.bookD.message

四、翻译(20题)71.Asfarasabilityisconcerned,Tomistherightpersonforthejob.

72.Itisvitalthatscientistsshouldperceivethedangernowbeforeitistoolate.

73.我们在寻找有经验的人士，他们愿为我们高绩效的组织做出贡献，并能为他们职业生涯的成功而奋斗。

A.Weareseekingexperiencedindividuals,willingtoattributetoourhighperformanceorganization,anddevotedtothesuccessoftheircareer.

B.Wearelookingforexperiencedindividuals,arewillingtocontributetoourhighperformanceorganization,anddevotedtothesuccessoftheircareer.

C.Wearelookingforexperiencedindividuals,willingtocontributetoourhighperformanceorganization,anddevotedtothesuccessoftheircareer.

D.Weareseekingexperiencedindividuals,reluctanttodistributetoourhighperformanceorganization,anddevotedtothesuccessoftheircareer.

74.Sincethebeginningofthe1990s,Shanghaihasundergonegreatchangesandhastakenonanewlook.

75.Thegirltakesafterhermotherandisalwayscheerful.

76.Asfarasthemethoditselfisconcerned,itisworthtrying.______________________________________________________________________________

77.近期的心理学研究表明许多孩子纯粹是凭想象产生了对危险的恐惧感.

78.他们赞成采取严格的措施来控制污染。

79.Psychologistsnowbelievethatnoisehasaconsiderableeffectonpeople’sattitudesandbehavior.

80.ScientistssaythatplantandanimallifeinthousandsoflakesintheUnitedStatesandCanadahasalreadybeendestroyedbyacidrain.

81.Weareconcernedtodeveloptheabilitiesofalloutpupilstothefull,notjusttheiracademicability.

82.如果你想要节约钱，你最好买些二手书。_____________________________________________________________________________

83.听到这个好消息，他简直无法相信自己的耳朵。

84.Weareapublisherofbusinessmagazinesandcommercialtradejournalsandcanofferspecialratestonewcustomers.

85.Theteacherknewthat:ifJackdidnotdaretojoininthecompetition,chanceswerethatnootherstudentintheclassdid,either.

86.Bothsoundandnoisecanhavenegativeeffects,butwhatismostimportantisifthepersonhascontroloverthesound.

87.Ithasbecomeharderandharderforateenagertostandupagainstthepopularitywaveandgohisorherownway.

88.Themeetingwasn’theldbecauseyouwereabsent.

89.Tiredofnoisybigcities,moreandmorepeoplearelongingforapeacefullifeinthecountryside

90.Nomatterwhathesaid,Iregardedhiscommentonmyabilityasachallenge.

五、阅读理解(5题)91.ToswimacrosstheEnglishChanneltakesatleastninehours.It'sahardworkanditmakesyoushortofbreath.ToflyovertheChanneltakesonlytwentyminutes（aslongasyou’renotheldupattheairport.,butit'sanexpensivewaytotravel.Youcantravelbyhovercraftifyoudon’tmindthenoise,andthattakesfortyminutes.Otherwiseyoucangobyboat,ifyouforgetyoursea-sicknessills.Allthesemeansoftransporthavetheirproblemsandtheweary（不耐烦的）traveleroftendreamsofbeingabletodrivetoFranceinhisowncar.“Notpossible”,yousay,Well,waitaminute.PeopleareonceagainconsideringtheideaofaChanneltunnelorbridge.Thistime,theGreaterLondonCouncilislookingintothepossibilityofbuildingaChannellinkstraighttoLondon.Abridgewouldcostfarmorethanatunnel,butyouwouldbeabletogobyrailorbycaronabridge,whereasatunnelwouldprovidearalllinkonly.Whyisthisideabeingdiscussedagain?IsBritainbecomingmoreconsciousoftheneedforlinkswithEuropeasaresultofjoiningtheEEC（欧供体）?Well,perhaps.Themainreason,though,isthatatunnelorbridgewouldreachthetwentysquarekilometersofLondon'sdisuseddockland（船坞地）.AlinkfromLondontothecontinentwouldstimulatetradeandre-vitalize（使……重新有活力）theport,andwouldmakeLondonamaintradingcenterinEurope.WithalinkovertheChannel,youcouldbuyyourfishandchipsinEngland,andbeabletoeattheminFrancewhiletheywerestillwarm！WhichofthefollowingstatementsisTRUE?A.SwimmingacrosstheChanneltakestessthanfourhours

B.TheideaofaChanneltunnelorbridgeisaverynewone

C.Itisconsideredtobemoredifficulttoswimacrossthechannelthananyothermeans

D.Atunnelorbridgewouldonlyreachasfarasthecoast

92.

Thelastsentencemeansthataknowledgeoffishsoundscanhelpmanto______.

A.avoidconfusioninfishingactivity

B.avoidunneededeffortinfishsoundstudies

C.detectenemysubmarines

D.pickupnewsounds

93.Whatthewriterworriesaboutinabigcityis______.

A.thenumberoftrafficlights

B.theshortageofbuses

C.thelackofmotorways

D.thetrafficcongestion

94.WhatdoAmericanpeoplealwaysdowhenservingsaretoolargeforthem?

A.Theytakethefoodhomewithadoggiebagfortheirdogs.

B.Theyleavethefoodonthetableandgoaway.

C.Theytakethefoodhomewithadoggiebagandenjoythefoodlater.

D.Theyaskthewaitressorwaitertokeepthefoodforthem.

95.EdenMedicalCenterusestheHill-Rombadgesto______.A.A.determinewages

B.timethenurses

C.measureoverallperformance

D.lookforlazynurses

六、作文(1题)96.Directions：Youaretowritein100-120wordsonthetopicGlobalShortageofFreshWa-ter.YoushouldbaseyourcompositionontheoutlinegiveninChinesebelow

：1.人们认为淡水是取之不尽的

;2.实际上淡水是短缺的;3.我们应当怎么办。

参考答案

1.C

2.D本题考查时态。

【应试指导】句意：当你写信回家的时候，请代我向你的妻子问好。在时间状语从句中用一般现在时代替一般将来时。

3.A

4.A

5.C解析：副词so置于句首，句子应该用倒装语序，某人受伤用sb.beinjured来表示，故答案为C。

6.B解析：表示否定的副词前置于句首，句子需要不完全倒装，即助动词提前。其余选项均可排除。除Notuntil外还有never，seldom，rarely，seldom，no，little，hardly，innotime等否定副词或结构放在句首时，句子需要部分倒装。

7.D

8.D解析：本题考查动词搭配。doone'shomework“做作业”；makemistakes“犯错误”。句意为：做作业，还要保证别犯错误。

9.D

10.B

11.A

12.D

13.B

14.A解析：shape意为“(女人的)姿态，身段”；form意为“形状，形态”；appearance意为“外表，样子”；body意为“身体”。由题意知应选A。

15.B

16.C

17.D解析：从句中的问句主谓不倒装。从句的时态随主句。我想知道那辆车的价格。

18.A解析：while意为“虽然”；as意为“因为”；if意为“如果”；since意为“因为”。根据题意选A。

19.D

20.C

21.A解析：根据上文提到“findone”，故下文中也应填one，表示泛指。

22.B解析：encourage：鼓励、鼓舞；discourage：使泄气；prevent：阻止；ask：要求。根据句意只有选B。

23.C

24.D

25.D解析：上句责备玛丽应该做作业而不是坐到那儿看电视，下句是玛丽对妈妈责备的一种辩解：“你说过电视是有教育意义的。”所以D项正确。

26.B解析：本题考查固定搭配的用法。当否定词位于句前时，得出结论应用reach/achievein/arriveatconclusion，故选B。

27.D

28.D解析：which修饰非限定性定语从句，指代前边一句话。本题涉及句法知识——简单句、并列句和复合句。例如：Hehastwodaughters.Theyaredoctors.(简单句)Hehastwodaughtersandtheyaredoctors.(并列句)Hehastwodaughters,whoaredoctors．(复合句)

29.A解析：本题考虚拟语气在名词性从句中的用法。在“ask(advise，desire，ordersuggest，require，etc。)+the广引导的从句中，谓语动词应用“should+认”，should可以省去，再结合语态，故A项正确。本句大意为：他们要求所有的必要文件都必须在月底之前交到校长办公室。

30.Bsetout意为“出发，动身”。

31.A解析：句意：她昏倒了。给她脸上浇些水，或许她会醒过来。本题考查词组辨析。comeround：过访，绕道而来，苏醒过来；comeback：回来，恢复；comeagain：再说一遍，重复一遍；comeout：出来，传出。

32.A本题考查祈使句型：

【应试指导】句意：Mary，到这里来，其余的人待在原处。根据句子的结构可判断出这是个祈使句。所以要用动词原形开头。Mary在句中不是

主语，而是“呼语”。

33.A

34.D解析：forgetdoingsth．忘了已做过某事。注意区别forgettodosth。忘了而没有做某事。

35.B解析：本题考查动词固定搭配的用法。deprive后常接介词of，表示剥夺什么。

36.B

37.B解析：theeducationsystem是主语，谓语动词应用单数；thedesiredresults意为“期望的结果”。

38.A【句子大意】新打字机的价格是二手货的三倍。

39.B解析：此处是对将来情况的假设。虚拟条件句的谓语部分为should，had或were时，可把if省去，而把should，had或were放在从句的主语之前，构成主谓部分倒装。

40.C解析：本题考查词义的辨别。rise出现，put放下，raise提起，arise升高。

41.Dapplyto应用；applyfor申请

42.A解析：此题考查反意疑问句的用法。主句为祈使句，因此其反意疑问句用willyou。

43.A

44.B解析：cuts“裁减”；shortages“短缺”；weaknesses“弱点”；imports“进口”，故正确选项为B。

45.B

46.C

47.C

48.C解析：本题考查倒装虚拟语气用法。本句是表示与将来事实相反，所以从句用wereto形式。句意为：如果他今天出发的话，他就会在星期五以前到达那里。

49.Blaunch为“发射”讲；其余为干扰项。

50.D解析：本题测试形容词辨析。四个选项的意思分别是“普通的”，“清楚的”，“正义的”，“仅仅的”。根据句意，D项正确。本句大意为：他仅仅把它作为一个细节来描述，而我却认为它是这个计划中最重要的部分。

51.GI'dratherhaveasmallwedding

52.D

53.A

54.A

55.【提示】本题立足于日常表达。平日里，人们可用不同的说法表达相同的意思，因此此题比较灵活，答案不唯一，符合题意和口语表达方式即可。1.【答案】Wehaven’tseeneachotherforayear【解题指要】根据中文提示得知两人已有一年未见，因此填入Wehaven’tseeneachotherforayear。2.【答案】Icameherethreedaysago【解题指要】根据中文提示，她说自己三天前才到这个地方，因此填入Icameherethreedaysago。3.【答案】Totellyouthetruth【解题指要】根据中文提示“说实话”，此空填入Totellyouthetruth。4.【答案】Wouldyoulikesomecoffee【解题指要】根据中文提示，他想邀请她一起喝咖啡，因此此空填入Wouldyoulikesomecoffee。5.【答案】I’llstayhereforamonth【解题指要】根据中文提示得知他要在这里待一个月。因此该空填入l’llstayhereforamontho【参考译文】Bill：请进。Alice：谢谢。Bill：我们有一年不见了吧，你最近怎么样?Alice：嗯，还不错。你呢?Bill：我也挺好的。Alice：我三天前刚到这里，就过来看看你。Bill：你真好。说实在话，我真地很想念你。Alice：我也是。Bill：去喝杯咖啡怎么样?Alice：不了，我四点和别人还有些事要谈。我得走了。Bill：你现在就得走吗?Alice：我在这里要待一个月呢。我会再来看你的。

56.E

57.F

58.

59.Areyoufree/Doyouhavetime

60.B

61.B因为钉钉子要用锤子，下文也提到售货员拿给他锤子，所以他做出的动作应该是用锤子钉钉子的动作，故应选B项。

62.B

63.C见上一条。

64.D

65.D解析：操作说明主要是提供信息。下文中information的再度出现可为此处的选择提供佐证。

66.D解析：逻辑推论题。根据上下文我们得知学生去学校上学，回来有很多作业要做，可见给学生布置作业的是学校。

67.C电视机的完整说法是TVset。因为电视大众化了，作者的家也能买电视机了。选项A是正确的。

68.C解析：大多数鸟是能飞的，但也有些鸟不能飞。But起转折的作用，表示与前面的相反。

69.B解析：get在此处是个系动词，意为“变得…”，最符合题意。being没有变化的意思；remaining意为“保持”，不能与比较级连用。

70.B

71.就能力而言汤姆是此项工作的合适人选。就能力而言，汤姆是此项工作的合适人选。

72.重要的是科学家们现在就应该觉察到危险否则就为时太晚了重要的是，科学家们现在就应该觉察到危险，否则就为时太晚了

73.B

74.自20世纪90年代以来上海发生了巨大的变化面貌焕然一新。自20世纪90年代以来，上海发生了巨大的变化，面貌焕然一新。

75.那女孩很像她妈妈总是乐呵呵的。那女孩很像她妈妈，总是乐呵呵的。

76.就这一方法本身而言，是值得一试的。

77.Recentpsychologicalstudieshaveshownthatmanychildrenhavedevelopedfearsofdangers.Recentsurveys/opinionpolls/statisticshaveshown/indicatedthat.RecentpollshaveshownthatChineselivemoreandmore