2021下半年成都市英语统招专升本真题演练【带答案】

2021下半年成都市英语统招专升本真题演练【带答案】学校:________班级:________姓名:________考号:________

一、阅读理解(30题)1.35.Howlongdidthe

NewYork

blackoutin1977last?A.Awholenight.B.Twenty-fourhours.C.Awholeweek.D.Threedays.

2.Thepassageimpliesthattherearemanysenseswe______.

A.canuseonlyinemergencies

B.maynotunderstandatpresent

C.neverrealizewehave

D.donotactivelyuseineverydayliving

3.Theexpression"pitchinwith"inParagraph2probablymeans______.

A.complainB.enjoyC.helpD.deny

4.WhentheVenezuelancontestantssay"it'sworththeeffort",theyreallymean______.

A.theygainmorefamefrombeautycontests

B.themoneyspentonbeautycontestsisworthwhile

C.theygainanadvantageoveranyoneelseinpolitics

D.beautycontestsleadtoabettercareer

5.Dr.Kellygavespecialattentiontothecasemainlybecause_________.查看材料

A.hefellinlovewiththewoman

B.itwasararedisease

C.hewaseagertodistinguishhimself

D.hewantedtorepaythewomanforhergreatkindness_________.

6.ProtestorsclaimeditwaswrongtofireMatthewCusickmerelybecausehewas______.

A.averygoodacrobat

B.notsick.

C.unabletofindotherwork

D.HIVpositive

7.Thetelevisionprogrammeiscalled"PoliceFive",becauseitisabouttheworkofthepoliceand______.

A.itisonforfivetimeseverysevendays

B.itlastsfiveminutesaweek

C.itbeginsatfiveintheafternoon

D.itisaprogrammeaboutfivepolicemen

8.Intheauthor‘sopinion，teacherscanonlybepromoteddependingon__________.查看材料

A.howwelltheygivetheirlectures

B.howwelltheygetalongwiththestudents

C.howmanypapersandbookstheyhavepublished

D.howwelltheyconducttheiracademicresearches

9.

第47题Theearlymillowners______．

A.hopedthatbycreatingrelativelyunattractive“female”jobstheywoulddiscouragewomenfromlosinginterestinmarriageandfamilylife．

B.soughttokeepwomen’swageslowbyincreasingthesizeoftheavailablelaborforce．

C.arguedthatwomenwereinherentlysuitedtodowellinparticularkindsoffactorywork．

D.thoughtthatfactoryworkbetteredtheconditionofwomenbyemancipatingthemfromdependenceonincomeearnedbymen．

10.InLindsay'stime,______.

A.therewasagreatimprovementinracerelations

B.blackpeoplewerestilllookeddownupon

C.theGeorgiaStategovernmentencouragedblackstudentstoworkforit

D.itwasimpossibleforblackstoenterfamousuniversities

11.Asuccessfulbusinessdealcantakeplaceonlywhen______.

A.priorityisgiventotherequirementsofthecustomer

B.thecustomerissatisfiedattheexpenseofthecompany

C.acompanymakesabigprofit

D.consumersatisfactionandcompanyprofit

12.Wecaninferfromthepassagethat______.

A.humanbeingshadexploredmostofthedangerousplacesonearthbytheearly20thcentury

B.ShackletonwenttoAntarcticatowinaprize

C.noonehadbeentoAntarcticabeforeShackleton

D.FrankHurleywasbraverthanShackletonbecauseherecordedthewholevoyagefaithfully.

13.Accordingtothepassage,howoftendoesREMsleepoccurinonenight?

A.OnceB.TwiceC.FourorfivetimesD.Fortytimes

14.Inwhichcasementionedinthepassagewouldanautomaticlanguagetranslatorbehelpful?________A.Amedicalemergency．

B.Policeaction．

C.Traveling．

D.Alloftheabove．

15.Howisfindingabirthmotherlikegettingakeytoadiary?A.A.Adiarycomeswitheachbirthcertificate.

B.Theadopteeswillhaveachancetofindoutabouttheirmother'slife.

C.Ifthekeyopensthediary,yougetabirthcertificate.

D.Theadopteewillhavetokeepadiarybeforetheygetabirthcertificate.

16.Themaincauseofabankrunis______.

A.lossofconfidence

B.lackofmoney

C.crowdsofpeople

D.inexperiencedtellers

17.Atdaybreakeverydayflyingfoxesbeginto______.

A.flyouttowardthesun

B.lookforanewrestingplace

C.comebacktotheirhome

D.gooutandlookforfood

18.52.__________A.A.withB.againstC.beyondD.above

19.Thediscoveryofadwarfed(矮个的)"humanbeing"wholivedinFlores,Indonesia,upto18,000yearsagoischangingthewaywethinkaboutthehumanfamily.This"FloresHuman"wasthreefoottallandherbrainwassmallerthanthatoftheaveragechimp(黑猩猩),yetsheandherrelativesapparentlylivedfullyhumanlives.Theyseemtohavemadetools,workedtogethertofindfoodandcookit,andperhapsevenburriedtheirdeadwithceremony.Itwasamajorsurprisetofindtoolsassociatedwiththenewhumanfamilymember.ThetoolsarelikethoseformerlyseenonlywithEuropeanfossils(化石)fromourownspecies:Homosapiens(智人):andtheoldestofthemweremade9,400yearsago.Homosapiensisthoughttohavearrivedintheislandabout4,000yearsago,muchtoolatetoberesponsibleforthetools.If

thistinyhuman

madethetools,thentheinsidestructure(结构)ofitsbrainmusthavebeenmorelikeourownthanachimps,despitebeingjustathirdthesizeofours.This"newhuman"wassuspectedtobeadwarfedbranchofHomoerectus(直立人).Whencreaturesareseparatedinregionswithrareresourcesbutfewenemies,beingbigisadisadvantage,andevolutiontendstoshrinkthem,aprocessknownasislanddwarfing.Couldnaturalselectionmakeahumansmallerwhilekeeping—evenimproving—mentalability?Quitepossibly,believesChristopherWillsoftheUniversityofCalifornia.Hasthe"FloresHuman"evenshowntheabilityoflanguage?"Ifinditdifficulttoimaginethatpeoplecouldmaketools,usefire,andkilllargeanimalswithoutfairlyadvancedcommunication,"Willssays.Did"FloresHuman"possessthebasiccomponentsofhumanculture—suchastheburyingofthedeadwithceremony?EmilianoBruneroftheItalianInstitutepointsoutthatIndonesiashot,wetenvironmentisbadforfossilization.Itisreasonabletoassume,hesays,thatthe18,000-year-oldbonesofthemostcompleteFloreswomanwerewell-preservedbecauseshewasburiedwithspecialcare.

Accordingtothepassage,"FloresHuman"______.

A.livedapartlyhumanlife

B.wasabranchofHomosapiens

C.usedtoolsbeforeHomosapiensarrived

D.hadabrainaslargeasacommonchimp"s

20.43.ThewriterthinksMissJacksonis______.A.poorbutbraveB.friendlyandtalkativeC.ateacherlikedbyallherpupilsD.anexampleherchildrenshouldfollow

21.WhichofthefollowingisNOTmentionedasafactorthatcontributestogreatfiredanger?

A.Sultryweather.

B.Cigarettesthrownoutofcarwindows.

C.Pineforests.

D.Windstorm.

22.PassageFour

Manypeoplewanttoknowhowtoanalyzeproblemstheymeet.Therearesixstagesinanalyzingaproblem.

Firstthepersonmustrecognizethatthereisaproblem.Forexample,Sam'sbicycleisbroken,andhecannotrideittoclassasheusuallydoes.Sammustseethatthereisaproblemwithhisbicycle.

Nextthethinkermustdefinetheproblem.BeforeSamcanrepairhisbicycle,hemustfindthereasonwhyitdoesnotwork.Forinstance,hemustdetermineiftheproblemiswiththegears,thebrakes,ortheframe.Hemustmakehisproblemmorespecific.

Nowthepersonmustlookforinformationthatwillmaketheproblemclearerandleadtopossiblesolutions.Forinstance,supposeSamdecidedthathisbikedoesnotworkbecausethereissomethingwrongwiththegearwheels.Atthistime,hecanlookinhisbicyclerepairbookandreadaboutgears.Hecantalktohisfriendsatthebikeshop.

Afterstudyingtheproblem,thepersonshouldhaveseveralsuggestionsforapossiblesolution.TakeSamasanillustration.Hissuggestionsmightbe:putoilonthegearwheels;buynewgearwheelsandreplacetheoldones;tightenorloosenthegearwheels.Eventuallyonesuggestionseemstobethesolutiontotheproblem.Sometimesthefinalideacomesverysuddenlybecausethethinkersuddenlyseessomethingneworseessomethinginanewway.Sam,forexample,suddenlyseesthatthereisapieceofchewinggumbetweenthegearwheels.Heimmediatelyrealizesthesolutiontohisproblem:hemustcleanthegearwheels.

Finallythesolutionistested.Samcleansthegearwheelsandfindsthatafterwardshisbicycleworks

perfectly.Inshort,hehassolvedtheproblem.

48.Inanalyzingaproblemweshoulddoallthefollowingexcept______.

A.recognizeanddefinetheproblem

B.lookforinformationtomaketheproblemclearer

C.havesuggestionsforapossiblesolution

D.findasolutionbytrialormistake

23.EllsworthHuntingtondecidedthatclimateandtemperaturehave______.

A.agreateffectoneveryone’sintelligence

B.sameeffectonmostpersons'intelligence

C.someeffectonafewpersons'intelligence

D.noeffectonmostpersons'intelligence

24."Defied"inthefifthparagraphprobablymeans"______".

A.doubledB.gaveprooftoC.challengedD.agreedto

25.Ifonewantstoworkmoreefficientlyathislowpointinthemorning,heshould______.

A.changehisenergycycle

B.overcomehislaziness

C.getupearlierthanusual

D.gotobedearlier

26.Thetwolettersareprobablywritingto______.A.A.anadvertisementcompany

B.anadministrationoffice

C.aschoolnewspaper

D.atravelagency

27.Inthefirstparagraphtheword"expatriate"refersto______.

A.expertB.directorC.foreignerD.English

28.whatcanwelearnaboutMissJackson?

A.Sheisaseriouslady.

B.Sheisastrictteacher.

C.Sheisanarrow-mindedlady.

D.Sheisapoorbutkindteacher.

29.WhatdoweknowaboutMcDonald'sbrothers?

A.TheywerenotMcDonald'sfoundersalthoughtheynamedtherestaurant.

B.Theirbusinesswasstillindepressionafterseveralyears.

C.Theyhadclearjobseparationonbusiness.

D.Theysoldtheirrestauranttoasalesmanin1954.

30.Theopinionofthewriteristhat______.

A.theremaybeotherintelligentbeingsintheuniverse

B.thereareotherintelligentbeingsintheuniverse

C.peoplelivingontheeartharealmostcertainlytheonlyintelligentbeingsintheuniverse

D.peoplelivingontheeartharedefinitelytheonlyintelligentbeingsintheuniverse

二、完型填空(20题)31.【B2】

A.passB.reachC.goD.set

32.(49)

A.someB.noC.manyD.afew

33.(77)

A.promoteB.stopC.affectD.influence

34.【B7】

A.inB.withC.onD.for

35.29.（）A.A.thatB.whichC.whetherD.if

36.ThenumberofspeakersofEnglishinShakespearestimeisestimatedtohavebeenaboutfivemillion.Todayitisestimatedthatsome260millionpeoplespeakitasa(an)【C1】______language,mainlyintheUnitedStates,Canada,GreatBritain,Ireland,SouthAfrica,AustraliaandNewZealand.InadditiontothestandardvarietiesofEnglishfoundintheseareas,【C2】______areagreatmanyregionalandsocialvarietiesofthelanguageaswellas【C3】______levelsofusagethatareemployedbothinitsspokenandwrittenforms.Infact,itis【C4】______toestimatethenumberofpeopleintheworldwhohaveacquiredanadequateworkingknowledgeofEnglishinadditiontotheirownlanguages.The【C5】______forEnglishlearningandthesituationsinwhichsuchlearningtakesplacearesovariedthatitis【C6】______toexplainandstillmoredifficulttojudge【C7】______formsanadequateworkingknowledgeforeachsituation.Themainreasonforthewidespread【C8】______forEnglishisitspresentdayimportanceasaworldlanguage.Besides【C9】______theindefiniteneedsofitsnativespeakers,Englishisalanguageinwhichsomeofimportantworksinscience,technology,andother【C10】______arebeingproduced,andnotalwaysbynativespeakers.Itiswidelyusedfor【C11】______purposesasmeteorological(气象的)andairportcommunications,internationalconferences,andthe【C12】______ofinformationovertheradioandtelevisionnetworksofmany【C13】______Itisalanguageofwidercommunicationforanumberofdevelopingcountries,speciallyformerBritishcolonies.Manyofthesecountrieshavemulti-lingual【C14】______andneedalanguageforinternalcommunicationinsuchmattersasgovernment,commerce,industry,lawand【C15】______aswellasforinternationalcommunicationandforentrancetothescientificandtechnologicaldevelopmentsintheWest.

【C1】

A.foreignB.nativeC.secondD.official

37.(46)

A.sinceB.thatC.whileD.as

38.38.（）A.A.inorderB.incaseC.sothatD.therefbre

39.(78)

A.whereB.whenC.whatD.who

40.(53)

A.highB.lowC.downD.flavored

41.25.()A.A.numerousB.innocentC.honestD.fortunate

42.(48)

A.sortB.typeC.kindsD.groups

43.24.A.city

B.urban

C.suburban

D.countryside

44.(45)

A.earlyB.lastC.beforeD.later

45.24.（）A.A.hardB.easilyC.helpfullyD.greatly

46.(47)

A.otherB.sameC.averageD.out

47.(44)

A.atthisrateB.aboveallC.onanaverageD.bywayof

48.【B3】

A.asksB.askedC.wasaskingD.hadasked

49.(50)

A.forcedB.promisedC.beggedD.ordered

50.【B9】

A.expectB.doubtC.forgetD.review

三、语音(10题)51.(2)

A.message

B.fountain

C.orange

D.classmate

52.(4)

A.value

B.busyC.continue

D.music

53.（）A.A.trouuble

B.touuch

C.young

D.houuse

54.2.A.

expensiveB.

excuseC.

exampleD.

except

55.(3)

A.wholeB.whileC.whomD.whose

56.(5)

A.crucial

B.decision

C.democracy

D.celebrate

57.

A.twentyB.sweetC.wrongD.worthy

58.（）A.A.receipt

B.implication

C.empty

D.concept

59.3.________A.calmB.hallC.talkD.ball

60.

3.A.

exerciseB.

exceptC.coffeeD.journey

四、词汇与结构(20题)61._____morecareful,hisshipwouldnothavesunk.

A.Ifthecaptainwere

B.Hadthecaptainbeen

C.Shouldthecaptainbe

D.Ifthecaptainwouldhavebeen

62.Doyouknowanyotherforeignlanguages______French?

A.butB.exceptC.besidesD.beside

63.Readingistothemind______foodistothebody.

A.whatB.thatC.whoseD.which

64.______Iwrotealittlepoem,Iconfidentlyplaceditrightonmyfather'splateonthediningroomtable.

A.Thefirsttime

B.Atfirst

C.Itwasthefirsttime

D.Forthefirsttime

65.Wewon'tbeabletogototheclub______ourparentsgiveuspermission.

A.althoughB.neverthelessC.unlessD.once

66.Afteramedicalexamination,thedoctorgavemea(favor)______reportonmyhealth.

67.Myapproachisnottolearneverythingaboutsomething,but______somethingabouteverything.

A.rathertolearn

B.ratherlearning

C.toratherlearn

D.ratherthanlearn

68.Thenewengineer'ssuggestionswere______intherevisedplan.

A.entitledB.engagedC.embodiedD.estimated

69.—Islippedonthestairs.Ithinkmyarmisbroken.—Oh!I______.

A.don"thopeB.hopenotsoC.donothopeD.hopenot

70.Little______atthattimethatthecourseofmylifewasabouttochange.

A.didIknowB.IknewC.Ididn'tknowD.haveIknown

71.Don'tletyourselfgetintobad______.

A.hobbyB.habitC.customD.profession

72.Hemumbledsomethingandblushedasthoughasecrethadbeen______.

A.imposedB.composedC.exposedD.opposed

73.Thefact______moneyorderscanusuallybeeasilycashedhasmadethemapopularform.ofpayment．

A.ofB.isthatC.thatD.whichis

74.Here’samallwhojustbreaksintoabankandhelpshimself________somuchMoney.

A.toB.byC.forD.on

75.Letustakecareofthehousewhileyouareaway,______?

A.shan'tweB.shallweC.don'tyouD.willyou

76.Thoughmyfathersufferedfromillness,hehadto______greatpaintoworkformyeducation.

A.liveinB.liveatC.livewithD.liveupto

77.Halfayearafterthewar,schoolsinthecountryreturnedto______.

A.normalB.cultivationC.instructionD.education

78.IrecognizedJohn______heenteredtheroom,

A.hardlyB.theminuteC.nosoonerD.atonce

79.8._______changed:

whatevermencando,womencanalsodo.A.TimehasB.TimehaveC.AgehasD.Agehave

80.Iwrotehimalettertoshowmy______(appreciate)ofhisthoughtfulness.

五、书面表达(1题)81.根据提示写一份举行隔周一次的英语晚会（every—other．weekEnglishevening）的书面通知。提示：

1．时间：ll月24日，周六晚上7点。

2．地点：2号教学楼的报告厅（1ectureroom）。

3．内容：歌曲、朗诵（recitation）、舞蹈、话剧等，还有美籍教师演讲。

4．目的：提高学生英语听说能力。

5．报名地点：办公楼203室，学生会（Students’Union）。

注意：

1．要点不得遗漏。

2．符合书面通知的格式。

3．词数为100左右。

六、写作(1题)82.Forthispart,youaresupposedtowritealetterin100～120wordsbasedonthefollowingsituation.Remembertowriteitclearly.

你是一位中学数学老师。最近，你的几位老同学希望你能入伙，和他们共办一家软件公司。经过考虑，你做出了自己的选择。就以上所规定的情景用第一人称写封信给他们，告知他们你的看法。

参考答案

1.B35．答案为B

根据最后一句得知短短24小时让人们体会到电的重要，因此B为正确答案。

2.C解析：我们只意识到外部感官，从没有意识到我们的内部感官才是我们生命的根本。第一段尤其强调这一点。选项C是正确的。

3.C解析：该行意为“全家人一起参与准备饭菜女主人才能稍有解脱。”

4.D

5.D从第一段结尾到第二段说他特别关注这个病人，可以看出他是为了报答。选项D是正确的。

6.D解析：最后一段说很多文艺界人士站出来声明对艾滋病病毒携带者的歧视是不能接受的。

7.B解析：参见句子第一自然段中的“InLondonthereisatelevisionprogrammecalled'PoliceFive'-becauseitisonforfiveminutesonceaweek．”。

8.A参考文章第一段倒数第一句，“Mypointofviewis…”，可推知作者的观点是A。

9.C根据文章第二段第二旬，早期textile-millentrepreneur认为“womenwerebynatureskillfulatdetailedtasksandpatientincarryingoutrepetitivechores．”而A、B选项文章未提及，D项工厂劳动将妇女从依赖男人中解放出来，不是这些人的观点，而是第l段所提的一些历史学家的观点。因此，本题正确答案为C项。

10.A

11.D

12.A

13.C解析：根据文中第一段第二行的提示，可知REM一晚上发生四到五次。

14.A参见倒数第四段。

15.B见原文第四段。KathyAllen认为她的生活的某些方面被封锁了很久，现在，她能够知道她的母亲的事。

16.B本题的题干是问“发生银行挤兑的主要原因”就是许多人都认为银行拿不出钱来，即资金缺乏。

17.C

18.B

19.C依据在第二段中，比较隐蔽，根据“Homosapiensisthoughttohavearrivedintheislandabout4．000yearsago．muchtoolatetoberesponsibleforthetools．”可知答案为C项。也可以用排除法，A、B、D三项与文章内容矛盾。

20.D43．答案为D

短文第三段最后一句I'dliketoseethechildrenbelikeMissJacksonwhenthey，

growup

可得知作者很崇敬MissJackson，希望自己的孩子长大后也能像她那样，因此答案为D。

21.C解析：本题属细节题。文章第一段第二句中的“hotdryweather”与A项相对应，第二段第二句中的“thereisahighwind”与D项相对应，第二段第一句中的“throwcigarette”与B项相对应。

22.D48．选项A在第二段；选项B在第四段；选项C在倒数第二段。选项D是正确的。

23.B解析：参见第一段最后一句。

24.C解析：词汇释义题。根据第五段中“Attheearlyattempts，thecablefailedandwhenitwastakenoutforrepairsitwasfoundtobecoveredinlivinggrowths，afactwhichdefiedcontemporaryscientificopinionthattherewasnolifeinthedeeperpartsofthesea”可得出正确答案为C。

25.C解析：文中第三段谈到了对抗能量周期的事情，可知答案是C项。

26.C两封信来自学校不同层面的人，一个是学生，一个是校长。并就学习成绩的作用问题发表看法。因此只能是发表在报纸上的文章。

27.C解析：expatriate“移居国外者，侨民”。

28.D解析：参见第三段。

29.C

30.A

31.C解析：gobeyond意为“超越”。

32.B解析：这里是说假树在某种条件下是看不出来的。所以，应当选择表示否定的词。选项B是正确的。

33.C解析：A项用法不正确，不能用topromotesomeonetodosomething的句型；B项与原句表述正相反；C和D都有“影响”的意思，其区别在于affect通常引起负面的后果，而influence经常引起正面的结果。

34.B解析：根据句意，报纸上不仅刊登回信，而且把问询信也刊登在报纸上。alongwith...意为“和……一起”。

35.A

36.B根据紧接着的国家名称的提示可知是指将英语作为母语的人数。

37.C解析：刘翔坐在世界纪录牌上庆祝。

38.C

39.C解析：生活所能提供的最好的东西。

40.A解析：后面的balance和adjust告诉我们，即便我们食用了胆固醇高的食物，我们的身体会自我调整，选项A是正确的。

41.D有个人志向的人占有一定的比例。他们做了思想和意志的努力。这些人是幸运的群体。

42.C

43.C此题测试理解、辨词和推理能力。在该句中，英文aroundthem，意为“在它们周围”，及下旬中aroundthecity，意为“在城市周围”都提示了．此处的填充词应表达一个“郊区的”的意思。但如没有掌握英文suburban一词，可用排除法。city为“城市”，urban为“城市的”，countryside

为“农村”，因而只剩一个suburban，它必定是答案。

44.A解析：见上一条。

45.B

46.A解析：另一方面，有些人警告说改革并不意味着真的有所改善。

47.C

48.B解析：叙述过去的事情用过去时。一个陌生人问他是不是裁缝的儿子。

49.D解析：这里是通过一个事件说明战争的残酷。在战时，士兵与平民的地位肯定是士兵高于平民。因此，当士兵给对方提出要求时肯定是以命令的形式。force，强迫；promise，承诺；beg乞求；order，命令。

50.A解析：正如你所期望的那样。

51.D解析：画线部分读[ei]，其他选项的画线部分读[i]。

52.B解析：画线部分读[i]，其他选项的画线部分读[ju：]。

53.D

54.C

55.B解析：画线部分读[w]，其他选项的画线部分读[h]。

56.A解析：选项A画线字母读[∫]，其他选项画线字母渎[s]。

57.CA、B、D三项划线字母w发[w]，而C项中划线字母w不发音，因此选C项。

58.A

59.AA项划线部分发[a：]，而B、C、D三项划线部分发[c：]，故选A项。

60.AA画线部分读[e]，其他选项的画线部分读[i]。

61.B解析：由主句谓语可判断，从句应表示与过去事实相反的情况，虚拟条件句中的谓语应用过去完成时。动词放句首的倒装形式表明是虚拟语气。Hadthecaptainbeen=Ifthecaptainhadbeen。

62.C解析：but多与nothing、nobody、all等连用；except表示“除了：除去”：besides是“除了……还有”的意思；beside表示“在旁边”。

63.A

64.A解析：定冠词the加moment，instant，first(second)time…也可以用作连词，引导时间状语从句，故答案选A。

65.C解析：Although尽管，nevertheless然而，unless除非，once一旦。选项C是正确的。

66.favorable

67.A

68.C解析：beembodiedin表“被包括在……之内”。

69.DIhopenot常用来表示不希望某事发生，肯定结构为Ihopeso。

70.A解析：little等表示否定意义的词放在句首，句子应用倒装。又由句中的atthattime可知应用一般过去时，故选A。

71.B解析：本题考名词的辨析。hobby意为“(个人的)业余爱好”；habit意为“(个人的)习惯”；custom意为“(国家和民族)长期形成的风俗习惯”；profession意为“职业”。结合句意，故B项正确。本句大意为：别让自己养成坏习惯。

72.C

73.C

74.A

75.D解析：此句为以letus开头的祈使句，其附加疑问句应用willyou，而Let's开头的祈使句，其附加疑问句用sha