2021-2022学年河南省信阳市成考专升本英语自考测试卷(含答案)

2021-2022学年河南省信阳市成考专升本英语自考测试卷(含答案)学校:________班级:________姓名:________考号:________

一、单选题(20题)1.Theyrequiredthatallthenecessarydocuments______tothepresident'sofficebeforetheendofthismonth.

A.behanded

B.mustbehanded

C.shouldhandin

D.hadbeenhandedin

2.Sicknessdeprivedme______thepleasureofseeingyou.

A.fromB.ofC.outofD.with

3.Thesearchwas_______whennightcame,eventhoughthechildhadnotbeenfoundA.approvedB.acquiredC.achievedD.abandoned

4.Icanneverforget______thefamousactressduringhervisittoourschool．

A.havingbeenmetB.tomeetC.tohavemetD.meeting

5.Thenovelwrittenbytheauthor_______well,butfiveyearsagronoonecouldhaveimaginedhowgreatarolehe_______intheliteraryworldA.sells;wastoplay

B.selling;wasplaying

C.sold;hadplayed

D.sell;isplaying

6.tosunlightfortoomuchtime,asthedoctorssay,willdoharmtoone‘sskin.

A.Beingexposed

B.Havingexposed

C.Exposed

D.Afterbeingexposed

7.Itisreportedthatmanyanewhouse_______atpresentinthedisasterareaA.arebeingbuilt

B.werebeingbuilt

C.wasbeingbuilt

D.isbeingbuilt

8.Whathedescribedasonlya______detailIthoughtwasthemostimportantpartoftheplan.

A.commonB.plainC.justD.mere

9.Helenalwayshelpshergrandmothereventhoughgoingtoschool____mostofherday.

A.takesupB.makeupC.saveupD.putup

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

A.That'snotaverygoodidea.

B.TVproducesgoodinfluenceonchildren.

C.Whatmakesyousaythat?

D.YousaidTVwaseducational.

11.

Allthestudentswenttothemagicshowyesterday.Itwasreally______A.amusinglyB.amuseC.amusingD.amused

12.Finallyhegottimeforaglance______thisreport.

A.offB.roundC.onD.at

13.—ThisismynewdogHisnameisWisdom—That'sinterestingWhy______didyougivehimsuchaname?

A.intheearthB.inworldC.onearthD.ontheworld

14.Thesenationalparksareveryimportantforpreservingmanyanimals,whichwouldruntheriskofbecomingextinct.

A.insteadB.thereforeC.neverthelessD.otherwise

15.Iwonderedwhatdifficultyhehad_________theplan?

A.tocarryout

B.carryingout

C.carriedout

D.withcarryingout

16.Haveacigarette,______?

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

17.______today,bewouldgettherebyFriday.

A.Wereheleave

B.Wasbeleaving

C.Werehetoleave

D.Ifheleaves

18.Theproblemwassettledtothecompleteofthem,sotheydidn‘tcomplain.

A.amazementB.satisfactionC.disappointmentD.attraction

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

20.Hishandwritingis______yours.

A.morebetterB.aswellasC.muchbetterthanD.asbetteras

二、翻译(10题)21.Theteacherknewthat:ifJackdidnotdaretojoininthecompetition,chanceswerethatnootherstudentintheclassdid,either.

22.Complainingisusuallymosteffectivewhenitisdonepolitelybutfirmly,andespeciallywhentheconsumercandemonstratewhatiswrongwiththeiteminquestion.

23.Thedemandforforeignexchangearisesbecauseacountry'sresidentswanttobuyforeigngoods.

24.Itisvitalthatscientistsshouldperceivethedangernowbeforeitistoolate.

25.我昨天没有见到她，我弟弟也没有。

26.Ithasbecomeharderandharderforateenagertostandupagainstthepopularitywaveandgohisorherownway.

27.Theyalsolearnhowtocopewithpersonalproblemsaswellaslearninghowtothink,tomakedecisions,toanalyzeandevaluate,andtocommunicateeffectively.

28.Heonceagainintroducedtoushisgreatknowledge,experienceandwisdom.

29.Todaywestilldistinguish,evenamongrepetitivejobs,betweentheskilledandtheunsailled;butintheyear2020allrepetitionwillbeunskilled.

30.必须采取有效措施来解决空气污染。____________________________________________________________________________

三、书面表达(10题)31.假定你是中国文化知识大赛组委员会主席李华，写信祝贺参赛选手JohnSmith获得本次

大赛一等奖，并通知其以下事项：

1．出席12月10日晚在北京友谊宾馆举行的庆祝晚会。2．赢得了免费中国10Et游。

3．如果能够参加旅游，应将信中所附表格填好，并准备好护照（passport）。组委会将负责

其他相关事宜。

注音．词数为100左右

October17th，2012

DearMr．JohnSmith，

Sincerelyyours，

LiHuaChair

CommitteeoftheChineseCultureContest

32.Ⅵ.Writing(25points)Directions:Forthispart,youaresupposedtowriteacompositionin100—120Fordsbasedonthefollowingsituation.Remembertowriteitclearly.61．你以伦敦国际语言中心的名义向大家介绍：1)该中心的教学目的既实用又围绕商务。教师经验丰富，有现代化的教学方法和设备。想参加语言课程请到105室登记。2)除了教学之外，该中心还提供许多其他活动，如电影、英语角、讨论和野餐，其目的是提高学生的语言技能。3)英语俱乐部每天上午九点至晚上九点开放，只需申请，会员即可免费使用。

33.你(LiYuan)的生日就要到了，写封信邀请朋友参加你的生日聚会。信的内容包括：

(1)告知对方聚会的具体时间、地点。

(2)到达聚会地点的行车路线及便利的交通工具。

34.假设你在上班的路上(或公交车上)发现小偷正在偷别人的钱。描写这个过程。内容包括：

(1)何时、何地。

(2)过程。

(3)你的感受(或作法、建议等)。

35.写一篇有关压力的文章。内容包括：

(1)压力是什么?

(2)减压的办法。

36.假设你是一名高中生，一次一位外国朋友问你，除了在学校学习英语还有什么其他途径可

以练习英语。请你根据提示用英语写出你参加“英语角”的情况。

提示：

1．“英语角”于两年前成立，许多中学生参加，有时也有一些大学生和外国友人来此。

2．活动时间：每周六上午。

3．活动内容：练习英语口语，谈论大家共同感兴趣的事情，交流学习英语的经验等。

4．谈谈你参加此项活动的体会。

注意．词数应为100左右

37.随着电脑和因特网的普及，网上购物也进入了人们的日常生活。有人支持网上购物，也有人对其保留态度，你的看法是什么？根据下表写一篇文章。注意：1.不要逐条翻译；2.

词数150左右。3.

参考词汇：投诉

complainv./complaintn.

38.Ⅵ.Writing(25points)Directions:Forthispart,youaresupposedtowriteacompositionin100—120wordsbasedonthetopicWhataForeignStudentShouldDoin

China.Remembertowriteitclearly.61．外籍学生(foreignstudents)如何适应中国生活1)外籍学生必须要有接纳不同文化、不同观念的开阔胸襟。2)勤练语言，与当地学生交流，尊重对方意见。3)俗话说要“人乡随俗”。

39.你不慎将手机丢失。请写--N寻物启事，内容大致包括以下方面：

(1)你的手机的品牌和外观(如颜色、形状等)。

(2)丢失的时间和地点。

(3)手机对你的重要性。

(4)希望拾到的人将手机送还。

(5)表示感谢，并提供你的联系方式(LiYuan，Tel：66778899)。

40.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。

四、翻译(20题)41.Hewassoweakthathewasoutofbreathafterwalkingforonlyafewminutes.

42.我相信我的学历和团队工作经历完全符合这一职务的要求。

A.Ibelievemyeducationbackgroundandexperienceinteamworkfitinnicewiththejobrequirements.

B.Ibelievemyeducationbackgroundandexperiencefitinnicelyinteamworkwiththejobrequirements.

C.Ibelievemyeducationbackgroundandexperienceinteamworkfitinnicelywiththejobrequirements.

D.Ibelievemyeducationbackgroundandexperienceinteamworkfitnicelywiththejobrequirements.

43.Bothsoundandnoisecanhavenegativeeffects,butwhatismostimportantisifthepersonhascontroloverthesound.

44.Pricesdeterminehowresourcesaretobeused.Theyarealsothemeansbywhichproductsandservicesthatareinlimitedsupplyaredisturbedamongbuyers.

45.必须采取有效措施来解决空气污染。____________________________________________________________________________

46.Tiredofnoisybigcities,moreandmorepeoplearelongingforapeacefullifeinthecountryside

47.Itisunderstoodthatwhentwounionsquarreloverthreejobs,theargumentissettledbygivingeachuniontwo.Thatmeans33percentovermanning,33percentlessproductivitythancouldbeobtained.

48.Themeetingwasn’theldbecauseyouwereabsent.

49.Itishumanbeing’sdutytoprotectthenaturalenvironmentfrombeingpolluted.

50.我刚从大学毕业，正在找一份有兴趣的、报酬高的工作。

51.这一项目的失败使我们得出结论：我们过高估计了他的能力。

52.Forweekshehadworriedoverhowtoconvincethegraduatesthatthey,too,couldsucceedagainstseeminglyimpossibleodds,thattheycouldmovemountains.

53.Iftheweatherpermits,wearegoingtosetouttomorrowmorning.

54.他们坚信只有通过刻苦和努力，人们才能完善自己并为自己赢得更加美好的未来。

55.他们很忙，只是偶尔去看戏。

56.Whetherhelikesthepresentornotisnotcleartome._____________________________________________________________________________

57.我们发现很多学生都在读书，所以我们不说话了并且开始学习。_____________________________________________________________________________

58.IntheUnitedStates,apersoncantakecreditonlyforwhathehasaccomplishedbyhimself.

59.Thereislittlechanceofourcomingtobusinessbecauseofthebigdifferencebetweenourprices.

60.Therearesomescientistswhohavemadeaspecialstudyofwhywedream,whatwedreamandwhatthosedreamsmean.

五、阅读理解(5题)61."Yes,I'llbereadyatnineinthemorning.Goodbye,dear,andthanksagain."IthadnotbeenaneasytelephonecallforMrs.Robsontomake.Herdaughterhadbeenverykind,ofcourse,andhadimmediatelyagreedtopickherupanddrivehertothestation,butMrs.Robsonhatedtoadmit(承认)thatsheneededhelp.Sinceherhusbandhaddiedtenyearsbefore,shehadpridedherselfonherindependence(独立生活).Shehadcontinuedtoliveintheirlittlehouse,alone.

Onthisevening,however,shewasstandingatherliving-roomwindow,staringoutattheSOLDnoticeinthesmallfrontgarden.Herfeelingsweremixed.Naturallyshewassadatthethoughtofleavingthehouse,asitwasfullofsomanymemories.Butatthesametimeshewaslookingforwardtospendingherlastyearsnearthesea,backinthelittleseasidetownwhereshehadbeenborn.Withthemoneyfromthesale(出售)ofthehouse,shehadboughtalittleflatthere.

Sheturnedfromthelivingroomwindow,andlookedroundattheroom.Oneortwopiecesoffurnitureremained,coveredwithsheets(被单).Thefloorwasbareboards,andallherpictureshadbeentakenfromthewalls.Therewasasmallfish-tank,withtwogoldfishcirclinginit.Whenaskedwhy,herhusbandusedtosay,"It'snicetohavesomethingaliveintheroom."Sincehehadpassedaway,shehadalwayskeptsomegoldfish,hadalwayshad"somethingaliveintheroom".

Timnextmorning,ashertrainwaspullingoutofthestation,Mrs.Robsoncalledtoherdaughter,"Kate,youwon'tforgettocollectthegoldfish,willyou?Thechildrenwilllovethem.It's...""Iknow,"Kateinterrupted(打断)gently."It'snicetohavesomethingaliveintheroom."

Butinthelittlehouse,thetwogoldfishhadstoppedtheircircling.Theywerefloating(漂浮)onthewater,intheroomwithitsbareboardsandsilentwalls.

Mrs.Robson______.

A.wasaveryproudperson

B.washelpless

C.didnotlikeaskingpeopleforfavors

D.wantedtolivewithoutherhusband

62.WhatcompetitionwascarriedoutrecentlyinBritain?

A.Acompetitionamongschoolchildren.

B.Acompetitioninindustry.

C.AcompetitioncalledBritishDesignersforTomorrow.

D.Acompetitionamongtheteachers.

63.Theauthorhopedthathisson____.

A.maybeluckytomeetagoodteacher

B.maystudyinschoolforfifteenyears

C.canreadmanybooks

D.maystudyscienceandmath

64.Ifonewantstoworkmoreefficientlyathislowpointinthemorning,heshould______

A.changehisenergycycle

B.overcomehislaziness

C.getupearlierthanusual

D.gotobedearlier

65.Animportantbusinessmanwasaskedtogiveatwenty-minutespeechinanothercity.Hewastoobusytowriteithimself,soheaskedhissecretarytoputonetogetherforhimoutofalargebookofspeecheswhichshehadonherdesk.Shetypedoneoutforhim,andhepickeditupjustintimetorushofftohisplane.Butwhenhegavehisspeech,itranonforanhour,andtheaudience(听众)wasgettingverytiredofitbytheend.

Whenthebusinessmangotbacktohisoffice,hesaidtohissecretary,"Itoldyouitshouldbeatwenty-minutespeech!"

"That'swhatIgaveyou,"sheanswered,"theoriginalandtwocopies.Theoriginalforyoutoreadatthemeeting,andtwocopiesforthefiles,afteryouhavecheckedthem."

Whatwasthesecretaryaskedtodo?

A.Togiveaspeechinsteadofthebusinessman.

B.Totypeaone-hourspeechforthebusinessman.

C.Tochooseaspeechfromabookofspeechesandtypeit.

D.Tomakeupaspeechfromsomeothersandtypeit.

六、作文(1题)66.假定你是Helen，要写一封信给Julie，对她和她的丈夫昨日请你和你丈夫吃饭表示感谢，表示要回请他们，以答谢他们的盛情款待。

参考答案

1.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。

2.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。

3.D

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

5.A

6.A

7.D

8.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。

9.A

10.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。

11.C所有的学生都去看了昨天的魔术表演。它太令人不可思议了。这里主要考查的是动词的现在分词和过去分词的不同用法。Sth．bedoing表示某一事物令人怎么样。Sb．bedone表示某人处于某种状态。例：Theletteristouching．这封信令人感动。

Iammoved．我很感动。

12.D

13.C

14.D

15.B

16.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。

17.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。

18.B

19.A

20.C解析：much用在句中修饰比较级better。

21.老师知道如果杰克不敢参加比赛那么很可能班上其他的同学也不敢。老师知道，如果杰克不敢参加比赛，那么很可能班上其他的同学也不敢。

22.投诉时注意礼节但又态度坚定，特别是能够指出所购买商品的缺陷，这样的投诉通常是最有效的。

23.外汇需求的产生是由于一个国家的居民想购买外国商品。外汇需求的产生是由于一个国家的居民想购买外国商品。

24.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

25.Ididn’tseeheryesterday;neitherdidmyyoungerbrother

26.对青少年来说，要逆世俗潮流，走自己的路，是越来越难了。

27.价格决定资源的利用方式，是购买者之间对有限供应的产品和服务进行配给的手段。

28.他再次让我们领略了他那广博的知识、丰富的阅历和无穷的智慧。他再次让我们领略了他那广博的知识、丰富的阅历和无穷的智慧。

29.Todaywestilldistinguish,evenamongrepetitivejobs,betweentheskilledandtheunskilled;butintheyear2020allrepetitionwillbeunskilled.今天我们甚至在重复性的工作中仍然要分清技术工种和非技术工种，但是到了2020年，所有重复性的工作都将是非技术性工作了。

30.Wemusttakeeffectivemeasurestosolvetheproblemsofairpollution.

31.Onepossibleversion:

October17th，2012

DearMr.JohnSmith，

ItismygreathonortotellyouthatyouhavewonthefirstprizeintheChineseCultureContest.Congratu-lations!

IwouldliketoinviteyoutoattendthecelebrationpartyontheeveningofDecemberlOthatFriendship

HotelinBeijing.AndyouareofferedalO-daytourinChina，freeofcharge.Ifyouareabletomakethetrip，pleasefillintheform.wemailyouwiththeletter.Be-sides，youwillhavetogetyourpassportready.Wewilldotherestforyou.Iamlookingforwardtoyourearlyreply.

Sincerelyyours，

LiHua

ChairCommitteeoftheChineseCultureContest

32.61．本文要点：伦敦国际语言中心LondonInternationalLanguageCenter，设备facilities，登记register，申请applyfor。LadiesandGentlemen,Welcometo

London

International

Language

Center.

WeteachEnglishforbothpracticalandbusinesspurposes.Ourteachersarewellexperienced.TheyusemodernteachingmethodsandfacilitiestohelpstudentsimprovetheirEnglish.YoumaygotoRoom105toregisterforourlanguagecourses.Inadditiontoformalclassroomteaching,weof{erourstudentsalotofotheractivities,includingmovies,EnglishCorners,discussionsandoutings.

AllthoseactivitiesaredesignedtohelpstudentsimprovetheirEnglishlanguageskills.OurEnglishclubopensfrom9a.m.to

9p.m.

everyday.Membersarefreetouseallthefacilitiesoftheclub.Allyouhavetodoistoapplyforacard.

33.DearPam,

Mybirthdayiscoming!Myparentsaregoingtoholdabirthdaypartyformeat13:00onMay29th(Sunday)athome.Willyoubefreeandcometomyparty?I'11beveryhappy.Besides,Tom,Janeandsomeotherclassmatesarecomingtoo.

YoumaytakebusNo.2toQingStreetandwalkstraightabout20meters.Thereyou'llseeadrugstore.Atthecomerofit,turnrightandgetintoaverynarrowstreetandlookforBeigingNo.10.That'smyhome.We'11waitforyouthere.

Pleasecallmebeforethedateifyoucannotcome.

Ican'twaitforthereunion.

Takecare

LiYuan

34.OneMondaymorningaroundeighto'clockinthebusonmywaytothecompany,Iwasenjoyingmybreakfastwhilereadinganewspaper.

Afterawhile,IraisedmyeyesandtriedtoseewherethebuswasandthenIhappenedtoseeayoungmanstrangelystickingtogetherwithalady.Ifeltcuriousandcouldn'thelplookingathimagain.SuddenlyIrealizedthathewasstealing!Attheverymoment,twomenrushedtohimandgraspedhishandwithapurseinit.Itwastoofastformostofustoseewhatwashappening.Thebusdrivertoldustheywerepolicemenaftertheygotoffthebus.

Whenwilltherebenoneedforpolicemeninthebusforsuchathing?

35.Stressisaforce,pressureortensionthatmakespeoplefeeldepressedorworried.Itcanmakepeoplephysicallyormentallyill.Buthowdowegetridofit?Thereareseveralways:

Travellingisaneffectivewaytoreduceanykindofstress.Planningthetripgivespeopleanexcitingmoodthatinspiresthemtobeactive.Byescapingfrompressure,theirmindwillberefreshedandpositive.

Gardeningisanotherfavorablewayoftreatingstress,becauseitprotectspeoplefrommentalandphysicalproblems.Flowersgivepeopleapeacefulandcheerfulfeeling,andthesunshinestrengthenstheirbodiestoresistthestresses.

Forreducingastressfullife,peopleshouldlivewiththesimplewaysthatareallaroundthem.

36.Onepossibleversion:

I"maseniorstudent.IlikeEnglishverymuch.attendingEnglishlessonsatschool，IoftengototheEnglishCornerintheparknearmyhomeonSaturdaymorning.Itwassetuptwoyearsago.Manyhighschoolstudentsgatherthere.Sometimes，some

CollgesudentsandevenforeignfriendsarepresentattheEnglishCorner.

TherewepractiseourspokenEnglish，talkaboutwhatweareinterestedin，exchangeourexperienceinlearningEnglishandsoon.I"velearnedalot.

IhavegreatlyimprovedmyselfinEnglishsinceIvisitedit.Itisreallyagoodhelptome.

37.

38.61．短文写作一般给出题目，或规定情景，或要求看图表作文，或给出关键词，或给出每一段的段首句，要求考生能够正确表达思想，语义连贯，无重大语法错误，书写工整。写作内容包括日常生活和一般常识。段首句作文要把主题句用简洁的语言表达出来，再通过二、三句事例对主题句进行扩展，句子结构要多样化，句子间正确使用一些承接词，使句子衔接自然。结尾句通常对段落进行总结。本文要点：适应getusedto，调整adjustoneselfto，思想开放open-minded，表达expressoneself。WhataForeignStudentShouldDoin

ChinaStudyingin

China,anyforeignstudentisverylikelytocomeuponsomethinghefindsithardtoadjusthimselfto,particularlyasfarascultureisconcerned.

HeshouldtrytogetusedtotheChinesewayoflivingwithaviewtoyieldingmorefruitfulresults.Heshould,firstofall,haveagodcommandofbothspokenandwrittenChinese,whichwillenablehimtofullyexpresshimself.Next,hemustexposehimselfasoftenaspossibletonativestudentssoastolearnofthevaluesChinesehold.Eastbutnottheleast,hemuststayopen-minded,housingdifferentviewpoints,dealingwithpeoplemodestly.Asthesayinggoes,

"Whenin

Rome,doastheRomansdo.”Thisiswhataforeignstudentshoulddotostudyin

China.

39.LOSTAmobilephoneislost.ItisNOKIA3100,black.

IthinkIlostitinthelibraryonMondayevening(May7)whenIwaswalkingaroundtoborrowandreturnbooks.

Itis,infact,averyoldone.Butitisakindofmemoryofoneofmyfriendswhodiedofcancerthreeyearsagowhenshewasonly22yearsold.She'sgonebutleftthemobilephonetome.Ikeepitandneverthinkofreplacingitwithnewonejustbecauseitisfromher.

Ibegyoutocallmeat66778899ifyoufounditsomewhere.Iamexpectingtogetmymobilephoneback.

Thousandthanks.LiYuan

40.Onepossibleversion:

September16，2012，SundayCloudy

Iwenttothesmallcityfarawayfromvillagestobooksthismorning.WhatIsawtheresurprisvery.much.Thereisariverinthecity.Thewaterinitisdarkandsmellsterrible.Itispollutedwithchemicalwastefromfactories.Therearemanysmallfactoriesalongtheriver.Theirwasteispoureddirectlyintotheriver.Theworstoneisthepaperfactory.Itpourswastewaterintotheriverdayandnight.Fishcan"tliveinsuchapollutedriverandneithercanpeopleswiminit.Iwonderwhypeopledon"tcareaboutourenvironment.Weshoulddosomethingtoreducepollution.

41.他身体很虚弱走了没几分钟就已经气喘吁吁了。他身体很虚弱，走了没几分钟就已经气喘吁吁了。

42.C

43.声音和噪音都有副作用，但是最重要的是人是否能够控制住声音。

44.价格决定资源如何被使用。同时它们也是紧缺产品和服务的在买者中分配的手段。

45.