学位英语模拟试题及答案

PartIVocabularyandStructure(20%)Directions:

Inthispartthereare40incompletesentences.ForeachsentencetherearefourchoicesmarkedA,

B,

CandD.ChoosetheONEanswerthatbestcompletesthesentence.ThenmarkthecorrespondingletterontheAnswerSheetwithasinglelinethroughthecenter.1.Howlongdoyouthink________tofinishthisurgenttask?A.didittakeyou

B.itwilltakeyou

C.willittakeyou

D.ittotakeyou2.Wealth,educationandoccupationvarygreatly________membersofthemiddleclass.A.among

B.between

C.from

D.inside3.Let’sbuyourticketswhileIstillhave________.A.alittlemoneytoleave

B.littlemoneyleftC.afewdollarsleft

D.fewdollarstoleave4.________wasnotthewaytheeventhappened.A.Whichthepressreported

B.ThatthepressreportedC.Whatdidthepressreport

D.Whatthepressreported5.Peopledonotlikesuchpersonswhoarealways________thewayofothers.A.on

B.by

C.in

D.behind6.Atfirstwewere________amusedbyDon’swords,butsoonweweretiredofthem.A.great

B.far

C.much

D.never7.Hetalksasifhe________everythingintheworld.A.knows

B.knew

C.wouldhaveknown

D.hadknown8.ThedoctoradvisedthatMr.Malan________anoperationrightawaysoastosavehislife.A.had

B.wasgoingtohave

C.have

D.wouldhave9.Heforgotabout________himtoattendmywife’sbirthdayparty.A.Iasking

B.myasking

C.metoask

D.minetoask10.Solittle________aboutstockexchangethatthelecturewascompletelybeyondme.A.didIknow

B.Ihadknown

C.Iknow

D.wasIknown11.Theboy’slaziness________hisfailureintheexams.A.resultedfrom

B.broughtin

C.resultedin

D.ledinto12.Onlyguestsofthehotelenjoythe________ofusingtheprivatebeach.A.privilege

B.possibility

C.favor

D.advantage13.Tom________morethantwentypoundsforthedictionary.A.spent

B.paid

C.cost

D.took14.Thegovernorhadto________allhisappointmentsforthedayandrushtothetrainaccident.A.setoff

B.payoff

C.seeoff

D.calloff15.Onecarwenttoofastand________missedhittinganothercar.A.completely

B.greatly

C.narrowly

D.little16.Hewasaccused________stealingfromtheshop.A.with

B.in

C.of

D.at17.Ittookmealongtimeto________thedisappointmentoflosingthematch.A.getover

B.getup

C.getinto

D.getdown18.Allthereferencebooksshouldbemade________totheteachersandstudentsinouruniversity.A.concerned

B.available

C.related

D.flexible19.Heneverthoughtthecommitteewould________hisproposal.A.putup

B.objectto

C.passon

D.callon20.Thecompanyofficial________Ithoughtwouldbefiredreceivedaraise.A.whom

B.whoever

C.who

D.ofwhom21.Mr.Green________myletter,otherwisehewouldhaverepliedbeforenow.

A.musthavereceive

B.musthavefailedtoreceiveC.mustreceive

D.mustfailtoreceive22.Weshallappreciate________fromyousoon.A.beingheard

B.hearing

C.havingbeenheard

D.tohear23.IfellandhurtmyselfwhileI________tennis.A.wasplaying

B.amplaying

C.play

D.played24.________youdisagreewithher,herideaisstillworthconsidering.A.Evenif

B.Ifonly

C.Insteadof

D.Despiteof25.I’d________youdidn’ttouchthat,ifyoudon’tmind.A.rather

B.better

C.happier

D.further26.Thetwomenarrestedforbreakingintothatshophavebeen________$10,000.A.committed

B.driven

C.charged

D.fined27.Thedrivermighthave________theaccidentifhehadhadhisheadlightson.A.missed

B.avoided

C.stopped

D.dismissed28.ThepeopleatthepartywereworriedaboutJanetbecausenoonewasaware________shehadgone.A.wherethat

B.ofwhere

C.oftheplace

D.theplace29.I________onthedoorfortenminutesnowwithoutananswer.A.wasknocking

B.amknocking

C.knocking

D.havebeenknocking30._________tiredafterahardwork,shefellintobedandwentstraighttosleep.A.Felt

B.Feeling

C.Beingfelt

D.Tofeel31.Hewas________enoughtounderstandmyquestionsfromthegesturesImade.A.intelligent

B.efficient

C.proficient

D.diligent32.Ifyou________thespeedlimityouwillgetintotroublewiththepolice.53.Bytheyear2000,today’s________nationswillhaveatotalpopulationof5billionpeople,nearlyfourfifthsoftheworld’spopulation.A.biggest

B.Asian

C.developing

D.developed54.________,theworldmayhaveapopulationof12billionacentury.A.IfmancanlivelongerinthefutureB.IfthescienceofmedicineisdevelopingfastenoughC.IfthepopulationgrowthisnotreducedD.Iftheearthisabletoprovideagoodlifeformorepeople55.Thispassagetellsusthat________.A.theUnitedNationsthinksitpossibletoavoidapopulationexplosionB.5.1billionpeoplearelivingintheundevelopedcountriesC.inadvancednationsthepopulationgrowthisbeingcontrolledD.theworld’spopulationisincreasing

Passage4Ascientistwhowantstopredictthewayinwhichconsumers(消费者)willspendtheirmoneymuststudyconsumerbehavior.Hemustobtaindatabothontheresourcesofconsumersandonthemotivesthattendtoencourageordiscouragemoneyspending.Ifaneconomistwereaskedwhichofthethreegroupsborrowmost

—

peoplewithrisingincomes,stableincomes,ordecreasingincomes

—

hewouldprobablyanswer:thosewithdecreasingincomes.Actually,intheyears1947-1950,theanswerwas:peoplewithrisingincomes.Peoplewithdecreasingincomeswerenextandpeoplewithstableincomesborrowedtheleast.Thisshowsusthattraditionalassumptions(假设)aboutearningandspendingarenotalwaysreliable.Anothertraditionalassumptionisthatifpeoplewhohavemoneyexpectpricestogoup,theywillhastentobuy.Iftheyexpectpricestogodown,theywillpostponebuying.Butresearchsurveyshaveshownthatthisisnotalwaystrue.Theexpectationsofpriceincreasesmaynotstimulatebuying.Onetypicalattitudewasexpressedbythewifeofamechanicinaninterviewatatimeofrisingprices.“Inafewmonths,”shesaid,“we’llhavetopaymoreformeatandmilk;we’llhavelesstospendonotherthings.”Herfamilyhadbeenplanningtobuyanewcarbuttheypostponedthispurchase.Furthermore,theriseinpricesthathasalreadytakenplacemaybedislikedandbuyer’sresistancemaybeproduced.Thisisshownbythefollowingtypicalcomment:“Ijustdon’tpaytheseprices;theyaretoohigh.”Theinvestigationsmentionedabovewerecarriedoutin

America.Theconditionmosthelpfultospendingappearstobepricestability.Ifpriceshavebeenstableandpeopleconsiderthattheyarereasonable,theyarelikelytobuy.Thus,itappearsthatthecommonbusinesspolicyofmaintainingstablepricesisbasedonacorrectunderstandingofconsumerpsychology(心理学).56.Accordingtothepassage,ifonewantstopredictthewayconsumersspendtheirmoney,heshould________.A.relyontraditionalassumptionsaboutearningandspendingB.trytoencourageordiscourageconsumerstospendmoneyC.carryoutinvestigationsonconsumerbehaviorandgetdataonconsumers’incomesandmoneyspendingmotivesD.doresearchesinconsumerpsychologyinalaboratory57.Accordingtoparagraph2,onetraditionalassumptionisthatpeoplewith________incomesborrowmost.A.average

B.stable

C.decreasing

D.rising58.Accordingtoparagraph2,researchsurveyshaveprovedthat________.A.priceincreasesalwaysstimulatepeopletohastentobuythingsB.risingpricesmaymakepeopleputofftheirpurchaseofcertainthingsC.womenaremoresensitivetotherisinginpricesthanmenD.theexpectationsofpriceincreasesoftenmakebuyersfeelangry59.Fromtheresultsofthesurveys,thewriterofthisarticle________.A.concludesthatthesavingandspendingpatternsin

GreatBritain

arebetterthanthosein

AmericaB.concludesthattheconsumersalwaysexpectpricestoremainstableC.concludesthatmaintainingstablepricesisacorrectbusinesspolicyD.doesnotdrawanyconclusion60.WhichofthefollowingstatementsisalwaysTRUEaccordingtothesurveysmentionedinthepassage?A.Consumerswillputoffbuyingthingsiftheyexpectpricestodecrease.B.Consumerswillspendtheirmoneyquicklyiftheyexpectpricestoincrease.C.Thepriceconditionhasaninfluenceonconsumerbehavior.D.Traditionalassumptionsaboutearningandspendingarereliable.

PartIIICloze(10%)Directions:

Thereare10blanksinthefollowingpassage.ForeachblankstherearefourchoicesmarkedA,B,CandD,youshouldchooseonethatbestfitsintothepassage.ThenmarktheanswerbyblankingthecorrespondingletterontheAnswerSheetwithapencil.Humansfallintotwotypeswhenitcomestobiologicalclock:theearly-to-bedandearly-to-riseorlate-night-lovingwhowakeuplongafterthedawn.Asanyparentknows,teenagersmaytakethe

61

toextremes.Buttheiroversleepingdoesnotrelaxthem.Someresearchersay:“:Biologyistoblame.”Theresearcherssurveyedthesleephabitsof25,000Germans,

62

from8to90,andfoundthatastheteenageyearswearon,thehourwhenkidsgotobedandgetupdriftslaterandlater.It’snotthatthey’resleepingmore.

63

,it’sthattheirlivingclockistwisted.However,aroundage20,thepatternreverses.Theclockstick

64

,andyoungadultsbegintogotosleepandwakeupearlierandearlier.Eventually,theirclockscoincidewith

65

ofolderpeople.Thequickchangemaymarkthebiologicalendofteenageyears.Adifference

66

thetiminginmenandinwomenpointstoabiologicalcause,perhapsahormonaleffect.Becausethelivingclockis

67

byexposuretosunlight,theresearcherssuspectsthemanyhourssomekids

68

stayingintheirdarkroomscouldpushtheclocksevenlater—apatternthatmaybemorecommoninindustrializedsocieties.Theresearchersalsodiscoveredthatruralresidents,

69

lifestyleputsthemindaylightmore,retireandriseanhourearlierthancity

70

.“Wethinkthisisonlythetipofanicebergthatshowsustheconsequencesofdim-lightenvironments,”theresearcherssay.

61.A.former

B.latter

C.first

D.last62.A.range

B.ranges

C.ranging

D.ranged63.A.Rather

B.Though

C.Yet

D.Nevertheless64.A.forth

B.forwards

C.upwards

D.back65.A.this

B.that

C.those

D.these66.A.for

B.between

C.among

D.of67.A.adjusted

B.adjusting

C.adapted

D.adapting68.A.take

B.use

C.afford

D.spend69.A.their

B.whose

C.which

D.how70.A.researchers

B.teenagers

C.residents

D.parents

PartIVTranslatefromEnglishtoChineseDirections:

Readthefollowingpassageandtranslatethe5partsunderlinedinthefollowingpassagefromEnglishintoChineseandwritethemontheTranslationPaper.Manisalandanimal,butheisalsocloselytiedtothesea.Throughouthistorytheseahasservedtheneedsofman.(71)Theseahasprovidedmanwithfoodandaconvenientwaytotraveltomanypartsoftheworld.Today,expertsbelievethatnearlytwo-thirdsoftheworld’spopulationlivewithineightykilometersoftheseacoast.

(72)

Inthemoderntechnologicalworldtheseaoffersmanyresourcestohelpmankindsurvive.

Resourcesonlandarebeginningtogrowless.Thesea,however,stilloffershopetosupplymanyofman’sneedsinthefuture.(73)Therichesoftheseayettobedevelopedbyman’stechnologyareimpressive.Oilandgasexplorationshaveexistedfornearlythirtyyears.Valuableamountsofmineralssuchasiron,copperandsoonexistontheoceanfloor.

Besidesoilandgas,theseamayoffernewsourcesofenergy.Forexample,warmtemperatureoftheoceancanbeusedasthesteaminasteamship.Seamayalsoofferasourceofenergyaselectricityformankind.(74)Technologyisenablingmantoexploreevendeeperunderthesea.Itisobviousthatthetechnologytoharvesttheseacontinuestoimprove.(75)

Bytheyear2050,expertsbelievethattheproblemstoexplorethefood,mineralsandenergyresourcesoftheseawillhavebeenlargelysolved.

PartVWriting(15%)Forthispart,youareallowed30minutestowriteacompositiononthetopic:GlobalShortageofFreshWater

Writeatleast100wordsandbaseyourcompositionontheoutlinebelowandusethewordsforreferencesasmanyasyoucan.1.

人们以为淡水是取之不尽的

(提示：雨水、河水、井水)2.

实际上淡水是非常紧缺的

(提示：人口增加，工业用水增加，污染)3.

我们应该怎么办

解析PartIVocabularyandStructure1.B【句意】你认为你要完成这项紧急的任务要多长时间？【解析】宾语从句是特殊疑问句，语序为：特殊疑问词+陈述句。故排除A、C。本句中it是宾语从句中的形式主语，动词不定式是真正宾语，选项D中动词不定式totake不能做谓语，故排除D。2.A【句意】在中产阶级中，财富、受教育程度和职业有着很大的差异。【解析】among“在…（三者或三者以上）当中”；between“在两者之间”；from“从…当中”；inside“在…内”。故A正确。3.C【句意】既然我还剩几美元，我们买票吧。【解析】

考查非谓语动词和限定代词。

句中money,dollar与leave是动宾关系，需用leave的过去分词形式作定语，故排除A、D。little,alittle与不可数名词连用，分别表示“不多”、“有些”。few，afew和可数名词连用。根据句意，排除B。4.D【句意】新闻对这个事件的报道不属实。【解析】该句的主语是由what引导的主语从句。连接代词what不仅起连接作用，而且在从句中还充当一个语法成分，在本句中是从句的宾语。5.C【句意】人们不喜欢那些总是妨碍别人的人。【解析】介词短语onthewayto“在去…的路上”；bytheway“顺便说”；inthewayof“妨碍”。根据题意，C正确。6.C【句意】起初我们觉得Don的话很有意思，但很快就厌烦了。【解析】句中所缺成分是状语，great是形容词，不能做状语。副词far修饰形容词或副词的比较级或最高级，表示程度。副词never“从不”，不符合题意。副词much修饰谓语动词，表示程度。故答案为C。7.B【句意】他说起话来就好像对世界无所不知似的。【解析】

asif引导的从句需用虚拟语气，主句时态是一般现在时，从句时态应为过去时。故答案为B。8.C【句意】医生建议Malan先生立刻动手术以挽救其生命。【解析】宾语从句中虚拟语气的形式是：主语+要求跟虚拟从句的动词+虚拟的宾语从句，宾语从句的谓语，美国英语要求用动词原形，英国英语要求用should+动词原形。谓语动词需用虚拟语气的宾语从句主要有下列动词：ask,advise,beg,demand,desire,determine,deserve,insist,maintain,propose,order,recommend,require,request,suggest,urge,etc.9.B【句意】他忘了我邀请他参加我妻子生日晚会的事了。【解析】介词后面只能用名词、代词或动名词作宾语，动名词有自己的逻辑主语，一般用物主代词或名词所有格的形式。故正确选项为B。10.A【句意】我对股票交易知之甚少，以至于根本听不懂这个讲座。【解析】

否定词和含有否定含义的短语以及so,only,often,little等词位于句首时引起部分倒装，即谓语的一部分（通常是助动词和情态动词）放在主语前面。故正确选项为A。11.C【句意】这个男孩的懒惰导致了他考试不及格。【解析】resultfrom“由…所导致”；resultin“导致”；bringin“把…带进”，而bringabout是“导致”的意思；leadinto

“引发、引起”（由一个话题到另一个话题），而leadto才是“导致”的意思。12.A【句意】只有饭店的客人享有使用这片私人海滩的权利。【解析】privilege“特权”；possibility“可能性”；favor“恩惠”；advantage“优势”。根据题意，A正确。13.B【句意】汤姆买这本字典花了二十多英镑。【解析】spend“花钱或时间”，用法：spendmoney/timeonsth.，主语是人；pay“付款”，用法：paymoney(forsth)；cost“花费”，用法：sth.costmoney,

主语是物；take“花时间”。根据题意，B正确。14.D【句意】这个地方长官不得不推掉当天的所有预约，赶赴火车出事地点。【解析】setoff“动身”；payoff“偿付清”；seeoff“送行”；calloff“取消”。根据题意，答案为D。15.C【句意】一辆车开得太快了，差一点就撞上了另一辆车。【解析】completely“完全地”；greatly“大大地”；narrowly“勉强地，差一点儿”；little“稍许”。根据题意，C正确。16.C【句意】他被指控在商店盗窃。【解析】固定搭配accusesbof（doing）sth.“指控某人”。17.A【句意】我用了很久的时间摆脱输掉比赛的失望。【解析】getover“把……说清楚，从……中恢复过来”；getup“起床”；getinto“陷入困境”；getdown“写下，渐渐地使某人感到疲倦”。18.B【句意】所有的参考书都应当让我们大学的教师和学生接触到。【解析】concerned“相关的”；available“可得到的，可利用的”；related“有关系的”；flexible“弹性的”。19.B【句意】他根本没想到委员会会反对他的提议。【解析】putup“提出”；objectto“反对”；passon“传给”；callon“要求”。根据题意，答案为B。20.C【句意】我认为要被解雇的那个公司官员却得到了提升。【解析】关系代词的格取决于关系代词在从句中的语法作用。因其在从句中作主语，故用主格的形式。21.B【句意】格林先生肯定没有收到我的信，否则他现在已经回信了。【解析】表示对现在情况的猜测、判断时，形式为：must+

动词原形；表示对过去事情的猜测时，形式为：must+have+过去分词。根据题意，应选B。22.B【句意】敬请速速回信。【解析】在英语动词中有些动词只能接动名词作宾语，而不能接动词不定式。如：admit,appreciate,avoid,consider,mind,risk,suggest,deny。23.A【句意】我打网球的时候跌倒，受了伤。【解析】句中主句时态是过去时，从句时态也应是过去时，因当时正在打网球，故应用过去进行时。24.A【句意】即使你与她观点不一致，她的观点还是值得考虑的。【解析】evenif“即使”(连接副词，后接从句)；ifonly（表示强烈的愿望）“但愿，真希望”；insteadof“代替，而不是”；despiteof“尽管”。25.A【句意】如果你不介意，最好不要碰它。【解析】wouldrather“宁愿”；hadbetter“最好”。根据题意，A正确。26.D【句意】因闯入那家商店而被捕的那两个人被判罚金一万美元。【解析】commit“犯（错误、罪行）”；drive“驾驶；驱使”；charge“索价”；fine“罚款”。根据题意，答案为D。27.B【句意】司机如果把前灯打开，可能会避免那起事故的发生。【解析】miss“错过”；avoid“避免”；stop“停止”；dismiss“解散；解雇”。根据题意，答案为B。28.B【句意】晚会上的人担心珍妮特,

因为没有人知道她去哪里了。【解析】

awareof“知道，意识到”是形容词和介词的固定搭配。用法：awareofsth;awareof+wh-从句；aware+that从句。29.D【句意】到现在我已经敲门敲了十分钟了，也没有人开门。【解析】现在完成进行时表示一个动作发生在过去，一直延续到现在，并仍在进行中。根据题意，应用现在完成进行时。故答案为D。30.B【句意】辛苦工作之后她感到很累，倒在床上就睡着了。【解析】分词作状语，其逻辑主语应是句子的主语。如果句子的主语是分词动作的发出者，则用现在分词；如果句子的主语是分词动作的接受者，则用过去分词。故答案为B。31.A【句意】他很聪明，只从我的手势就能理解我的问题。【解析】intelligent“聪明的”；efficient“效率高的”；proficient“熟练的，精通的”；diligent“勤奋的”。根据题意，答案为A。32.B【句意】如果你超速，警察就会找你的麻烦。【解析】exclude“排斥在…之外”；exceed“超出”；excuse“原谅”；

execute“将…依法处死；执行”。33.B【句意】他打开门，静悄悄地进屋以不吵醒家人。【解析】because、sothat

都是连词，后跟从句。despite“尽管”是介词，后不能跟动词不定式。soas+

不定式，“以便…”，作目的状语。34.D【句意】我真希望你去买那辆车之前，先跟我谈谈。【解析】“wish+

宾语从句”表示一种愿望，表示现在的愿望和未来的意愿，宾语从句的谓语：系动词一律用were，行为动词用过去时，或would,could,might+

动词原形。表示过去的愿望，从句中谓语用：had+

过去分词。根据题意，D正确。35.C【句意】最近刚得到晋升的主任做的工作比其他任何人做的都多。【解析】该句中do的宾语是work,more是形容词，做定语，修饰名词work,

应放在其前面。故C正确。36.C【句意】她结婚前，就在上海那个她所属的地方住了相当长的一段时间。【解析】关系代词which和whom除了在定语从句中可作动词的宾语外，有时还可作介词的宾语。这时，通常把介词放在整个定语从句的前面。其中的短语belongto意为“属于”。故C正确。37.B【句意】“再见，王先生。很高兴认识你。”【解析】考查非谓语动词，两人初次见面时，用动词不定式tomeet。分手时，用现在分词meeting。38.C【句意】约翰进行了调查，其结果不久将被公布。【解析】这是一个由关系代词whose引起的非限定性定语从句，whose表示所属关系，与名词连用。39.C【句意】你不知道他是我哥哥的一个老朋友吗？【解析】考查名词所有格，oneoldfriendofmybrother’s（oneofmybrother’sfriends）是双重属格，用来表示的关系是人不是物。注意双重属格可用a,any,some及数词等修饰of短语前面的名词，但不能用the,

如不能说“thesonsofMr.Hamilton’s”。40.B【句意】除非你立刻把书还到图书馆，否则你将被罚款。【解析】until“直到…时候”；unless“除非”；if“如果”；provided“倘若”。

PartIIReadingComprehension41.C【解析】推理判断题。从文章第一段第一、二句“每天几乎每个家庭都买至少一份报纸，有些人甚至订阅两至三份。”可推断出阅读报纸的习惯是遍及全世界的。故答案为C。42.B【解析】事实细节题。文章第二段第一句“五百年前，有关诸如战斗的胜败、皇帝或统治者被推翻或被刺的消息需几个月甚至几年的时间才会由一个国家传到另一个国家。”所以那时消息的传播速度不快。故答案为B。43.B【解析】事实细节题。文章第二段第二句“消息是口传的，根本不精确。”所以，在过去，消息是由一个人传至另一人，而不是通过电报、信或电话传递。故答案为B。44.C【解析】事实细节题。文章第三段第四句“大公司为了获得广告版面支付报纸成千上万美元，但钱花得值，因为他们的产品信息几乎是家喻户晓了。”所以花在广告上的钱是值得的。故答案为C。45.D【解析】事实细节题。文章最后一段“报纸通常刊登有关园艺、烹饪、时尚以及笑话、漫画方面的信息，笑话、漫画部分量虽少，但很受欢迎。”所以说阅读该部分的人很多。故D正确。46.A【解析】主旨题。纵观全文，文章讲的是伦敦大火。而选项B、C

、D只是片面讲到了文章的部分内容。47.C

【解析】事实细节题。从文章第一段第二句“TheywereverylateontheSaturdayevening,gettingeverythingreadyforthenextday”可知选项C“他们正在为第二天的晚宴做准备”正确。48.A【解析】推理判断题。从文章第一段第三句“周日凌晨三点，火光如此之亮以至于Jane把她的丈夫叫醒观看”来判断，当时她的丈夫睡着了。故答案为A。49.D【解析】词汇理解题。从文章第一段第三、四句，Jane把她的丈夫叫醒去观看，可推测出她的丈夫一定是“穿上”睡袍走到窗户那儿去观望。故答案为D。50.B【解析】推理判断题。从文章第二段倒数第二句“…andthentheflameshadquicklyspreadtotheotherhousesinthenarrowlane.”（火焰迅速蔓延到狭窄小巷中的其它房子。）可推断出房子相距很近是大火迅速蔓延的原因。故答案为B。51.A【解析】事实细节题。文章第四段讲到“粮食问题不是人口爆炸所带来的唯一问题，人口越多，人们的生活水平越差，产生各种各样社会问题的可能性也会越大。”所以，人口爆炸将导致很多社会问题。故答案为A。52.C

【解析】事实计算题。从文章第五段第一、二句“In1830,worldpopulationreached1billion.Ittookonly100moreyearstoaddanotherbilliontoworldpopulation;just30moretoaddathirdbillion.”可计算出世界人口从十亿增至三十亿需要约130年的时间。故C正确。53.C【解析】事实细节题。从文章第三段可知“截至到2000年，今日的‘穷国’人口将达到五十亿，几乎占世界人口的五分之四。”，其中的“havenot”nations即“developing”nations。故答案为C。54.C【解析】事实细节题。从文章最后一段第