大学英语四级题阅读题及答案

大学英语四级题阅读题及答案

大学英语四级题阅读题及答案1

PriscillaOuchida's"energy-efficient“houseturnedouttobea

horribledream.Whensheandherengineerhusbandmarriedafew

yearsago,theybuilta$100,000,three-bedroomhomeinCalifornia.

Tightlysealedtopreventairleaks,thehousewasequippedwithsmall

double-paned（双层玻璃的）windowsandseveralotherenergy-saving

features.Problemsbeganassoonasthecouplemovedin,however.

Priscilla'seyesburned.Herthroatwasconstantlydry.Shesufferedfrom

headachesandcouldhardlysleep.Itwasasthoughshehadsuddenly

developedastrangeillness.

Expertsfinallytracedthecauseofherillness.Thelevelof

formaldehyde（甲醛）gasinherkitchenwastwicethemaximumallowed

byfederalstandardsforchemicalworkers.Thesourceofthegas?Her

newkitchencabinetsandwall-to-wallcarpeting.

TheOuchidasarevictimsofindoorairpollution,whichisnotgiven

sufficientattentionpartlybecauseofthenation'sdrivetosaveenergy.

Theproblemitselfisn'tnew."Theindoorenvironmentwasdirtylong

beforeenergyconservationcamealong/saysMoschandreas,apollution

scientistatGeometlechnologiesinMaryland."Energyconservationhas

tendedtoaccentuatethesituationinsomecases."

Theproblemappearstobemoretroublesomeinnewlyconstructed

homesratherthanoldones.Backinthedayswhenenergywascheap,

homebuildersdidn'tworrymuchaboutunsealedcracks.Becauseof

suchleaks,theairinanaveragehomewasreplacedbyfreshoutdoorair

aboutonceanhour.Asaresult,thepollutantsgeneratedinmost

householdsseldombuilduptodangerouslevels.

31.ItcanbelearnedfromthepassagethattheOuchidas/house

A)iswellworththemoneyspentonitsconstruction

B)isalmostfaultlessfromthepointofenergyconservation

C)failedtomeetenergyconservationstandards

D)wasdesignedandconstructedinascientificway

32.WhatmadetheOuchidas'newhouseahorribledream?

A)Lackoffreshair.

B)Poorqualityofbuildingmaterials.

C)Gasleakageinthekitchen.

D)Thenewlypaintedwalls.

33.Theword“accentuate”(Line4,Para.3)mostprobablymeans

A)relieve

B)accelerate

C)worsen

D)improve

34.Whywerecracksinoldhousesnotabigconcern?

A)Becauseindoorcleanlinesswasnotemphasized.

B)Becauseenergyusedtobeinexpensive.

C)Becauseenvironmentalprotectionwasgiventoppriority.

D)Becausetheyweretechnicallyunavoidable.

35.Thispassageismostprobablytakenfromanarticleentitled

A)EnergyConservation

B)HousesBuildingCrisis

C)AirPollutionIndoors

D)TrapsinBuildingConstruction

大学英语四级精选题阅读题答案

31.B32.A33.C34.B35.C

大学英语四级题阅读题及答案2

Engineeringstudentsaresupposedtobeexamplesofpracticality

andrationality,butwhenitcomestomycollegeeducationIaman

idealistandafool.InhighschoolIwantedtobeanelectricalengineer

and,ofcourse,anysensiblestudentwithmyaimswouldhavechosena

collegewithalargeengineeringdepartment,famousreputationandlots

ofgoodlabsandresearchequipment.Butthat'snotwhatIdid.

Ichosetostudyengineeringatasmallliberal-arts(文科)university

thatdoesn/tevenofferamajorinelectricalengineering.Obviously,this

wasnotapracticalchoice;Icamehereformorenoblereasons.Iwanted

abroadeducationthatwouldprovidemewithflexibilityandavalue

systemtoguidemeinmycareer.Iwantedtoopenmyeyesandexpand

myvisionbyinteractingwithpeoplewhoweren'tstudyingscienceor

engineering.Myparents,teachersandotheradultspraisedmeforsuch

asensiblechoice.TheytoldmeIwaswiseandmaturebeyondmy18

years,andIbelievedthem.

IheadedofftocollegesureIwasgoingtohaveanadvantageover

thosestudentswhowenttobigengineering“factories“wherethey

didn'tcareifyouhavevaluesorwereflexible.Iwasgoingtobea

completeengineer:technicalgeniusandsensitivehumanist（人文学者）

allinone.

NowI'mnotsosure.Somewherealongthewaymynobleideals

crashedintoreality,asallnobleidealseventuallydo.Afterthreeyearsof

strugglingtobalancemath,physicsandengineeringcourseswith

liberal-artscourses,Ihavelearnedtherearereasonswhyfew

engineeringstudentstrytoreconcile（协调）engineeringwithliberal-arts

coursesincollege.

Therealitythathasblockedmypathtobecomethetypical

successfulstudentisthatengineeringandtheliberalartssimplydon't'

mixaseasilyasIassumedinhighschool.Individuallytheyshapea

personinverydifferentways;togethertheythreatentoconfuse.The

struggletoreconcilethetwofieldsofstudyisdifficult.

26.Theauthorchosetostudyengineeringatasmallliberal-arts

universitybecausehe.

A)wantedtobeanexampleofpracticalityandrationality

B)intendedtobeacombinationofengineerandhumanist

C)wantedtocoordinateengineeringwithliberal-artscoursesin

college

D)intendedtobeasensiblestudentwithnobleideals

27.Accordingtotheauthor,byinteractingwithpeoplewhostudy

liberalarts,engineeringstudentscan.

A)balanceengineeringandtheliberalarts

B)receiveguidanceintheircareers

C)becomenobleidealists

D)broadentheirhorizons

28.Intheeyesoftheauthor,asuccessfulengineeringstudentis

expected.

A)tohaveanexcellentacademicrecord

B)tobewiseandmature

C)tobeimaginativewithavaluesystemtoguidehim

D)tobeatechnicalgeniuswithawidevision

29.Theauthor'sexperienceshowsthathewas.

A)creative

B)ambitious

C)unrealistic

D)irrational

30.Theword"they"in/z...togethertheythreatentoconfuse/(Line

3,Para.5)refersto.

A)engineeringandtheliberalarts

B)realityandnobleideals

C)flexibilityandavaluesystem

D)practicalityandrationality

大学英语四级精选题阅读题答案

26.B27.D28.D29.C30.A

大学英语四级题阅读题及答案3

SectionB

Directions:Inthissection,youaregoingtoreadapassagewithten

statementsattachedtoit.Eachstatementcontainsinformationgivenin

oneoftheparagraphs.Identifytheparagraphfromwhichthe

informationisderived.Youmaychooseaparagraphmorethanonce.

Eachparagraphismarkedwithaletter.Answerthequestionsbymarking

thecorrespondingletteronAnswerSheet2.

ResilienceIsAboutHowYouRecharge,NotHowYoutndure

[A]Asconstanttravelersandparentsofa2-year-old,wesometimes

fantasizeabouthowmuchworkwecandowhenoneofusgetsona

plane,undistractedbyphones,friends,ormovies.Weracetogetallour

groundworkdone:packing,goingthroughsecurity,doingalast-minute

workcall,callingeachother,thenboardingtheplane.Then,whenwetry

tohavethatamazingworksessioninflight,wegetnothingdone.Even

worse,afterrefreshingouremailorreadingthesamestudiesoverand

over,wearetooexhaustedwhenwelandtosoldieronwith（继续处理）

theemailsthathaveinevitablystillpiledup.

[B]Whyshouldflyingdepleteus?We'rejustsittingtheredoing

nothing.Whycan'twebetougher,moreresilient（有复原力的）and

determinedinourworksowecanaccomplishallofthegoalswesetfor

ourselves?Basedonourcurrentresearch,wehavecometorealizethat

theproblemisnotourhecticscheduleortheplanetravelitself;the

problemcomesfromamisconceptionofwhatitmeanstoberesilient,

andtheresultingimpactofoverworking.

[C]Weoftentakeamilitaristic,“tough“approachtoresilienceand

determinationlikeaMarinepullinghimselfthroughthemud,aboxer

goingonemoreround,orafootballplayerpickinghimselfupoffthe

groundforonemoreplay.Webelievethatthelongerwetoughitout,

thetougherweare,andthereforethemoresuccessfulwewillbe.

However,thisentireconceptionisscientificallyinaccurate.

[D]Theverylackofarecoveryperiodisdramaticallyholdingback

ourcollectiveabilitytoberesilientandsuccessful.Researchhasfound

thatthereisadirectcorrelationbetweenlackofrecoveryandincreased

incidenceofhealthandsafetyproblems.Andlackofrecovery-whether

bydisruptingsleepwiththoughtsofworkorhavingcontinuouscognitive

arousalbywatchingourphones—iscostingourcompanies$62billiona

yearinlostproductivity.

[E]Andjustbecauseworkstops,itdoesn/tmeanwearerecovering.

We"stop"worksometimesat5pm,butthenwespendthenight

wrestlingwithsolutionstoworkproblems,talkingaboutourworkover

dinner,andfallingasleepthinkingabouthowmuchworkwelldo

tomorrow.Inastudyjustreleased,researchersfromNorwayfoundthat

7.8%ofNorwegianshavebecomeworkaholics（匚作狂）.Thescientists

citeadefinitionof“workaholism"as"beingoverlyconcernedabout

work,drivenbyanuncontrollableworkmotivation,andinvestingso

muchtimeandeffortinworkthatitimpairsotherimportantlifeareas//

[F]Webelievethatthenumberofpeoplewhofitthatdefinition

includesthemajorityofAmericanworkers,whichpromptedustobegin

astudyofworkaholismintheU.S.Ourstudywillusealargecorporate

datasetfromamajormedicalcompanytoexaminehowtechnology

extendsourworkinghoursandthusinterfereswithnecessarycognitive

recovery,resultinginhugehealthcarecostsandturnovercostsfor

employers.

[G]Themisconceptionofresilienceisoftenbredfromanearlyage.

Parentstryingtoteachtheirchildrenresiliencemightcelebrateahigh

schoolstudentstayingupuntil3amtofinishasciencefairproject.What

adistortionofresilience!Aresilientchildisawell-restedone.Whenan

exhaustedstudentgoestoschool,heriskshurtingeveryoneontheroad

withhisimpaireddriving;hedoesn'thavethecognitiveresourcestodo

wellonhisEnglishtest;hehaslowerself-controlwithhisfriends;andat

home,heismoodywithhisparents.Overworkandexhaustionarethe

oppositeofresilienceandthebadhabitsweacquirewhenwe'reyoung

onlymagnifywhenwehittheworkforce.

[H]AsJimLoehrandTonySchwartzhavewritten,ifyouhavetoo

muchtimeintheperformancezone,youneedmoretimeintherecovery

zone,otherwiseyouriskburnout.Gatheringyourresourcesto“tryhard"

requiresburningenergyinordertoovercomeyourcurrentlylowarousal

level.Italsoworsensexhaustion.Thusthemoreimbalancedwebecome

duetooverworking,themorevaluethereisinactivitiesthatallowusto

returntoastateofbalance.Thevalueofarecoveryperiodrisesin

proportiontotheamountofworkrequiredofus.

[I]Sohowdowerecoverandbuildresilience?Mostpeopleassume

thatifyoustopdoingatasklikeansweringemailsorwritingapaper,

yourbrainwillnaturallyrecover,sothatwhenyoustartagainlaterinthe

dayorthenextmorning,you'llhaveyourenergyback.Butsurely

everyonereadingthishashadtimeswhenyoulieinbedforhours,

unabletofallasleepbecauseyourbrainisthinkingaboutwork.Ifyoulie

inbedforeighthours,youmayhaverested,butyoucanstillfeel

exhaustedthenextday.That'sbecauserestandrecoveryarenotthe

samething.

[J]Ifyou'retryingtobuildresilienceatwork,youneedadequate

internalandexternalrecoveryperiods.AsresearchersZijlstra,Cropley

andRydstedtwriteintheir2014paper:^Internalrecoveryreferstothe

shorterperiodsofrelaxationthattakeplacewithintheframesofthe

workdayortheworksettingintheformofshortscheduledor

unscheduledbreaks,byshiftingattentionorchangingtootherwork

taskswhenthementalorphysicalresourcesrequiredfortheinitialtask

aretemporarilydepletedorexhausted.Externalrecoveryrefersto

actionsthattakeplaceoutsideofwork—e.g.inthefreetimebetween

theworkdays,andduringweekends,holidaysorvacations//Ifafterwork

youliearoundonyourbedandgetirritatedbypoliticalcommentaryon

yourphoneorgetstressedthinkingaboutdecisionsabouthowto

renovateyourhome,yourbrainhasnotreceivedabreakfromhigh

mentalarousalstates.Ourbrainsneedarestasmuchasourbodiesdo.

[K]Ifyoureallywanttobuildresilience,youcanstartby

strategicallystopping.Giveyourselftheresourcestobetoughby

creatinginternalandexternalrecoveryperiods.AmyBlanksondescribes

howtostrategicallystopduringthedaybyusingtechnologytocontrol

overworking.ShesuggestsdownloadingtheInstantorMomentappsto

seehowmanytimesyouturnonyourphoneeachday.Youcanalsouse

appslikeOfftimeorUnpluggedtocreatetechfreezonesbystrategically

schedulingautomaticairplanemodes.Theaveragepersonturnsontheir

phone150timeseveryday.Ifeverydistractiontookonly1minute,that

wouldaccountfor2.5hoursaday.

[L]Inaddition,youcantakeacognitivebreakevery90minutesto

chargeyourbatteries.Trytonothavelunchatyourdesk,butinstead

spendtimeoutsideorwithyourfriends—nottalkingaboutwork.Takeall

ofyourpaidtimeoff,whichnotonlygivesyourecoveryperiods,but

raisesyourproductivityandlikelihoodofpromotion.

[M]Asforus,we'vestartedusingourplanetimeasawork-free

zone,andthustimetodipintotherecoveryphase.Theresultshave

beenfantastic.Weareusuallytiredalreadybythetimewegetona

plane,andthecrowdedspaceandunstableinternetconnectionmake

workmorechallenging.Now,insteadofswimmingupstream,werelax,

sleep,watchmovies,orlistentomusic.Andwhenwegetofftheplane,

insteadofbeingdepleted,wefeelrecoveredandreadytoreturntothe

performancezone.

36.Ithasbeenfoundthatinadequaterecoveryoftenleadstopoor

healthandaccidents.

37.Mentalrelaxationismuchneeded,justasphysicalrelaxationis.

38.Adequaterestnotonlyhelpsonerecover,butalsoincreases

one'sworkefficiency.

39.Theauthoralwayshasahectictimebeforetakingaflight.

40.Recoverymaynottakeplaceevenifoneseemstohavestopped

working.

41.Itisadvisedthattechnologybeusedtopreventpeoplefrom

overworking.

42.Contrarytopopularbelief,restdoesnotequalrecovery.

43.Theauthorhascometoseethathisproblemresultsfroma

misunderstandingofthemeaningofresilience.

44.People'sdistortedviewaboutresiliencemayhavedeveloped

fromtheirupbringing.

45.Peopletendtothinkthemoredeterminedtheyare,thegreater

theirsuccesswillbe.

答案：

36.D

37.J

38.L

39.A

40.t

41.K

42.I

43.B

44.G

45.C

四级阅读理解答案：词汇理解

26.G）habitats

marine是形容词，表示〃海洋的〃，后面应该跟一个名词。符合条

件的名词有experiences（经验）、exterior（外部）、habitats（栖息地）、

investment（投资）、territory（领土）、victim（受害人）。

从上下文可知，暗礁是潜泳和保护海洋的圣地，所以应该

选habitats,海洋栖息地。

27.M）stripped

此处谓语不完整，要填写动词，由was可知耍使用被动语态。符

合条件的动词有depressed（使…沮丧）、stripped（剥夺、剥离）。

被沉下去的A300被了所有有可能对环境有害的东西，所

以应该选stripped,被剥离了。

28.A）create

此处是倒装句，thesunkenplanewill后面应该跟动词原形。符合

条件的动词有create（创作、创造）、innovate（发明）。

被沉默的飞机不仅仅将会给人工暗礁的生长完美的骨架，

所以应该选create,创造出。

29.L）stretches

主句缺少谓语，主语是theplane,应该选择动词的第三人称单数。

符合条件的动词有experiences（经历）、stretches（延展到）

这个飞机总长度54米，所以应该选stretches,延展到。

30.C）eventually

where引导的从句有完整的主谓宾结构，空格处应该填写副词。

符合条件的副词有eventually（最后，终于）、intentionally（故意地、有

意地）。

在这个地方，潜水者将能够探索机舱和•…，因为是在飞

机沉下去以后，潜水者才能够进行探索，所以应该选eventually,最

终

31.Fjexterior

由plane's可知此处为所有格，应该填一个名词。符合条件的名

词有experiences（经验）、exterior（外部）、investment（投资）、territory（领

土）、victim（受害人）。

潜水者最终可以探索机舱和飞机的,潜水者会探索飞机的

内部和外部,所以应该选exterior,外部。

32.JJinvestment

由that代词可知，此处应该填写一个名词。符合条件的'名词有

experiences（经验）、investment（投资）、territory（领土）、victim（受害人）。

他们（投资者）希望通过旅游业看到在上的回报，又从前一句

知道投资者在飞机上花了大量的金钱，所以应该选择investment,投

资上的回报。

33.0)victim

由定冠词the和介词of可知，此处应该填写一个名词。符合条

件的名词有experiences（经验）、territory（领土）、victim（受害者）。

土耳其这个国家是几起致命的恐怖袭击的，由上文可知,

土耳其的旅游业出现了下滑的趋势，他们受到了恐怖袭击的影响，所

以应该选victim,受害者。

34.^intentionally

sunk修饰aircraft表示被沉没的飞机，此处可以填写一个形容词

和sunk并列修饰aircraft,也可以是一个副词修饰形容词sunk。符合

条件的形容词有depressed（沮丧的）、revealing（透露真情的、有启迪作

用的）;符合条件的副词有intentionally（故意地、有意地）。

A300是的被沉没的飞机，由上下文可知，这架飞机是被

人为地沉没到海底地，所以此处应该选intentionally,故意被沉没的

飞机。

35.E）exploring

and并联连词连接taking和填空部分，形式应与taking保持一致，

动词的现在分词形式。符合条件的动词有exploring（探索）、revealing（揭

露）。

经历一场水下旅行和沉没的A300内部，由语意可知，应

该选择exploring,探索内部。

大学英语四级题阅读题及答案4

Questions31to35arebasedonthefollowingpassage:

"WelcometotheU.S.A.!Majorcreditcardsareaccepted!"

Bythemillionstheyarecomingnolongerthetired,thepoor,the

wretchedmasseslongingforabetterliving.Thesearethewealthy."We

donthaveabudget,"saysabiologistfromBrazil,asshewalkswithtwo

companionsthroughNewYorkCitysSouthStreet."Wejustuseour

creditcards."

TheUShaslongbeenoneoftheworldsmostpopulartourist

destinations,butthisyearhasbeenexceptional.First,therewasthe

WorldCup,whichdrewthousandsfromeverycorneroftheglobe;then

cametheweakeningoftheUSdollaragainstmajorcurrencies.Nowthe

US,stilltheworldssuperpower,canalsoclaimtobetheworldsbargain

basement（廉价商品部）.NobodyundersellsAmericathesedaysonjust

abouteverything,fromconsumerelectronicstofashionclothestotennis

rackets.Bottomretailpricesanywherefrom30%to70%lowerthan

thoseinEuropeandAsiahaveattractedsome47millionvisitors,who

areexpectedtoleavebehind$79billionin1994.Thatsupfrom$74

billiontheyearbefore.

True,noteveryorecomesjustforbargains.Thereremainsan

undeniablefascinationintherestoftheworldwithallthingsAmerican,

nourishedbyHollywoodfilmsandUStelevisionseries.Butshoppingthe

USAisprovingirresistible.Everyweekthousandsarrivewithempty

suitcasesreadytobefilled;someevenrentanadditionalhotelroomto

holdtheirpurchases.Thebuyingbinge（无节制）hasbecomeasimportant

aswatchingOldFaithfulFountainseruptinYellowstoneParkor

sunbathingonabeachinFlorida.

TheUShascomeatlasttoappreciatewhatothercountrieslearned

longago:thepouringinofforeigntouristsmaynotalwaysbeconvenient,

butitdoesputmoneyinthebank.Andwithatradedeficitatabout$130

billionandgrowingforthepast12months,theUSneedsallthedeposits

itcanget.ComparedwithAmericantouristsabroad,visitorstotheUS

staylongerandspendmoremoneyateachstop;anaverageof12.2

nightand$1624atravelerversustheAmericansfournightsand$298.

31.FromwhattheBrazilianbiologistsays,weknowthattouristslike

her.

A)arereluctanttocarrycashwiththem

B)simplydontcarehowmuchtheyspend

C)arenotgoodatplanningtheirexpenditure

D)oftenspendmoremoneythantheycanafford

32.Thereasonwhy1994wasexceptionalisthat.

A)itsawanunusuallylargenumberoftouriststotheUS

B)itwitnessedadropinthenumberoftouriststotheUS

C)tourismwashardlyaffectedbytheweakeningoftheUSdollar

thatyear

D)TouristscametotheUSforsightseeingratherthanforbargains

thatyear

33.Bysaying"nobodyundersellsAmerica"(Underlined),theauthor

meansthat.A)noothercountryunderestimatesthe

competitivenessofAmericanproductsB)nobodyexpectstheAmericans

tocutthepricesoftheircommodities

C)nobodyrestrainsthesellingofAmericangoods

D)noothercountrysellsatalowerpricethanAmerica

34.WhydoestheauthorassertthatallthingsAmericanare

fascinatingtoforeigners?A)Becausetheyhavegainedmuchpublicity

throughtheAmericanmedia

B)Becausetheyrepresenttheworldslatestfashions

C)Becausetheyembodythemostsophisticatedtechnology

D)Becausetheyareavailableatalltouristdestinations

35.FromthepassagewecanconcludethattheUShascometo

realize.

A)theweakeningoftheUSdollarcanresultintradedeficits

B)thelowertheretailprices,thegreaterinprofits

C)tourismcanmakegreatcontributionstoitseconomy

D)visitorstotheUSarewealthierthanUStouristsabroad

31.Bo从巴西生物学家所说的话，我们得知像她这样的游客完全

不介意他们花多少钱。细节推理型，通过对某一段话的理解，并进行

总结和概括。原文第二段提到现在涌入的是富人(Thesearethe

wealthy),所以当她说"Wedonthaveabudget,wejustuseourcredit

cards”是指花钱不用做预算，想买就用信用卡，其暗含的意思就是选

项B所表达的信息。故本题的正确答案是B。

32.A。1994年特别突出的原因是在那一年到美国的'游客数目非

常大。细节推理型，通过对某一段话的理解，并进行总结和概括。原

文第三段说明美国早已成为旅游胜地，1994年不同于往年，其原因

是世界杯吸引了大批游客，美元下跌使在美国购物便宜到了极点，这

更吸引了大量的游客。而这一观点恰好与选项A相一致。这句话中的

动词saw的意思是叩睹了“之意。故本题的正确答案是Ao

33.Do在文章第三段中，作者说了这样一句话：nobodyundersells

America,他所暗含的意思是没有哪个国家的物价水平比美国更低。

细节推理型，通过对某一段话的理解，并进行总结和概括。在文章的

第三段中NowtheUS,stilltheworldssuperpower,canalsoclaimtobe

theworldsbargainbasement的中文意思是：美国现在仍是世界上的超

级大国，也可以声称是世界上的廉价商品部。所以，nobodyundersells

America这句话所暗含的意思是：没有哪个国家的物价水平比美国更

低。在后文中，作者又提到了美国的零售底价比欧洲低30%,比亚洲

低70%o这一事实更证明了这一观点的正确性。故本题的正确答案是

Do

34.Ao作者为什么得出结论：所有的美国货对外国人来说都是非

常具有吸引力的?细节推理型，通过对某一段话的理解，并进行总结

和概括。文章的第四段第二句话Thereremainsanundeniable

fascinationintherestoftheworldwithallthingsAmerican,nourished

byHollywoodfilmsandUStelevisionseries.ButshoppingtheUSAis

provingirresistible.说明媒体使人们对美国货产生迷恋。在四个选项中,

只有选项A与这句话在观点上是一致的。故本题的正确答案是Ao

读完这篇文章，我们可以得出结论：美国已经意识到旅游

35.CO

业为美国经济的发展做出非常重大的贡献。主题归纳型，通过总结和

归纳，进而得出文章的主题。通读完全文后，我们可以得知：大批外

国游客涌入美国，并给美国政府带来了大笔收入。另外，文章第五段

强调美国终于开始重视外国游客大量涌入给美国经济带来的巨大贡

献。综合以上两点，我们可以得知选项C正是作者的观点和结论。故

本题的正确答案是C。

大学英语四级题阅读题及答案5

Thefuturepopulationwillbeolderthantoday,andthisinturnwill

changethepatternsofsocialdemands.However,Mexicowillstillbefar

fromthe"agingsocieties"thatwillmostlikelyprevail（占优势）inthe

industrializedcountries.Inlessthan25years,thecountrywillhaveto

addalmostasmuchinfrastructureasithasalreadybuiltuptonow,

simplytomaintainservicesandproductionatthecurrentlevels.Thiswill

beatremendouschallenge,althoughasimilaronewasfaced

successfullyintherecentpast,whenavailableinfrastructurewas

doubledintwodecadesorso.Itisnowonderthatmuchhasbeensaid

abouttheneedtoreduceorpreferablyhaltMexicospopulationcontrol

whichistakenforgrantedasbothgoodandnecessary.Ithasalsogained

supportersinthedevelopingworld,andMexicoisnoexception.Butthe

argumentsaboutpopulationarecomplicated,asthefollowingdiscussion

illustrates.

EvenifMexicospopulationreaches125millionbytheyear2010,its

populationdensityisstillsmallerthanthe1985populationdensityof

some50countries.ByinternationalstandardsMexicowillstillnotbe

overpopulatedbytheyear2010.Ifwealthisgeneratedbypeople,the

moreindividualsthereare,thegreaterthewealththatpotentiallycould

begenerated.WhyshouldMexicocontrolitspopulationatdensitylevels

belowthoseoftherichercountriesifmorepopulationrepresentsthe

possibilityofgeneratingmorewealth?

Ontheotherhand,itisoftenpointedoutthatonce

sustainability(支撑力)limitsarenearorarereached,thereare

decreasingproductivitygains(or;perhapsmoreaccurately,increasing

productivelosses),andpeoplebecomeacostratherthananasset.Ifwe

assumethattherearesustainabilitylimitsandthatwearecloseto

reachingtheselimitsataworldlevel,thenitisappropriatetocheck

populationgrowth.

21.Accordingtothepassage,thepopulationargumentisfocused

on.

A.whethermorepeopleareapropertyoracost

B.whetherMexicoshouldcontrolitspopulationgrowthornot

C.whetherthedensityofpopulationinMexicoislargeorsmall

D.whatthestandardinternationalsustainabilitylimitis

22.WhichofthefollowingisTRUEaccordingtothefirstparagraph?

A.Mexicohasstepoedintoanagingsociety.

B.ItisnotnecessaryforMexicotocontrolitspopulation.

C.Mexicopopulationisyoungerthanthatofdevelopedcountries.

D.ItisnotnecessaryforMexicotodevelopitsinfrastructure.

23.By"infrastructure"(Para.2)theauthormeans.

A.buildings

B.thebasicframev/orkofacountry,suchasschools,services,etc.

C.socialdemands

D.servicesandproduction

24.Itmaybeinferredfromthe3rdparagraphthat.

A.itisntnecessaryforMexicotocontrolitspopulationgrowth

B.populationislikelytogrowataslowerpacethaninthepast

C.themorepeoplethereare,thegreaterthewealthpeoplecould

generate

D.Mexicoshouldcontrolitspopulationgrowthbecauseshebelongs

tothedevelopingcountries

25.Tocheckpopulationgrowthisnecessarywhen.

A.therearedecreasingproductivitygains

B.thereareincreasingproductivitylosses

C.weareclosetoreachingthesustainabilitylimitsataworldlevel

D.peoplebecomeacost

答案：

21.B22.C23.B24.A25.C

大学英语四级题阅读题及答案6

Notallsoundsmadebyanimalsserveaslanguage,andwehave

onlytoturntothatextraordinarydiscoveryofecholocation（回声定位）

inbatstoseeacaseinwhichthevoiceplaysastrictlypracticalrole.

Togetafullappreciationofwhatthismeanswemustturnfirstto

somerecenthumaninventions.Everyoneknowsthatifheshoutsneara

walloramountainside,anechowillcomeback.Thefurtheroffthissolid

obstacle,thelongertimeitwilltakeforthereturnoftheecho.Asound

madebytappingonthemainbodyofashipwillbereflectedfromthe

seabottom,andbymeasuringthetimeintervalbetweenthetaps

andthereceiptoftheechoesthedepthoftheseaatthatpointcanbe

calculated.Sowasborntheecho-soundingequipment,no