考研英语模拟试题

考研英语模拟试题[24]

PartIStructureandVocabulary

SectionA

Directions：Beneatheachofthefollowingsentences,therearefourchoicesmarkedA,B,Cand

D)Choosetheonethatbestcompletesthesentence.MarkyouranswerontheANSWERSHEETby

blackeningthecorrespondingletterinthebrackets.(5points)

Slowly,withouttryingtodefendhimself,thebuffalosanktohiskneesand,withonelion

histhroatandanotherhismuzzle,diedofsuffocation(窒息、).

A)hold

B)held

C)holding

D)beingheld

Whenpreparingelementaryschooltest,careshouldbetaken.

A)nottomakethevocabularymoredifficultthannecessary

B)nottomakethevocabularythatdifficult

C)soastonotmakethevocabularyparttoohard

D)innotmakingthevocabularyaproblemintermsofitdifficulty

“Iwasinthearmyfor3years.”

“Butisn'ttwoyearstheinyourcountry?w

A)lengthyserviceusually

B)serviceoflengthsservices

C)usual1lengthofservice

D)usualservicelength

“WhendidyoufirstvisitNewYorkCity?"

“Ithinkitin1976.”

A)wi11havebeen

B)hastobe

C)musthavebeen

D)mustbe

Asaresulfofnewtechnique,theyieldsasawholeincreasedby25%.

A)workingout

B)havingbeenworkedout

C)havingworkedout

D)tohavebeenworkedout

，thisliquidwilldissolvealmostanything.

A)Enoughtimegiven

B)Givingenoughtime

C)Givenenoughtime

D)Togiveenoughtime

Moremiddleagedpersonssufferfromhearttroublethanrealized.

A)generally

B)mostpeople

C)whatpeople

D)isgenerally

Workinparapsychology(灵学)，,hasattractedarelativelysmallnumberofscientists.

A)isaverycontroversialfield

B)whichaverycontroversialfieldis

C)averycontroversialfield

D)afieldverycontroversialwhich

Itisridiculousthatheunabletoreadandwriteaftertwoyearsoflearning.

A)is

B)be

C)mightbe

D)wouldbe

Johnwillnotbeabletogotothemoviestonightbecauseaclass.

A)heshouldteach

B)hewillhavebeenteaching

C)hewillbeteaching

D)hewillhaveteaching

SectionB

Directions:EachofthefollowingsentecneshasfourunderlinedpartsmarkedA,B,CandD)identify

thepartofthesentencethatisincorrectandmarkyouranswerontheANSWERSHEETbyblackening

thecorrespondingletterinthebrackets.(5points)

Whi1ethepeopleinsidetheRomanEmpirewereenjoying(A)ahighdegreeofcivi1ization,the

“uncivilized“peoplewholivedintheforestsbeyond(B)thenorthernandeasternboundaries

loved(C)tofightandseizelandthat(D)itseemedpossible.

Ourguiderecommended(A)thatweallare(B)asattentiveaspossible(C)whenwevisit(D)the

observatorythisafternoon.

Aftersearching(A)thehouseforevidencethepoliceconcluded(B)thatsomeonemusthavecome

inthrough(C)thekitchenwindowandstole(D)thesilverwhilethefamilywasasleep.

Thewriterfindsthenumberandvariety(A)ofscreencredits(片头或片尾摄制人员名单)

interminable(B)andwondersthat(C)jobssuchas"gaffer”(照明电工)and"bestboy"involve.

(D)

Antsandtermitesareone(A)anotherzs(B)greatestenemy,(C)antsalwaysare(D)theaggressors.

Worrying,fretting,andunabletostop(A)talkingHarrypaced(B)upanddown(C)thecorridor

(D).

Mariahaslong(A)hadthedesiretobecomeafamouswritereventhough(B)thestudyofit(C)

wouldrequireyearsofsacrificeonher(D)part.

AlmosteveryAmericancol1egecampushaswhat(A)canbecal1edaninternationalclub,themain

purposeofwhich(B)isforpromoting(C)friendships(D)amongallstudentsoftheworld.

Notunti1thetenthseriousaccident(A)occurredat(B)thebusyintersection,theHighway

Departmentagreed(C)toinstall(D)thefourwaystopsign.

NeitherRussianor(A)theUnitedStateshavebeen(B)abletoconvincetheother(C)thatits

socialsystemisthebetter(D)ofthetwo.

SectionC

Directions:

Beneatheachofthefollowingsentences,thereare4choicesmarkedA,B,CandD)Choosetheone

thatbestcompletesthesentence.MarkyouranswerontheANSWERSHEETbyblackeningthe

correspondingletterinthebrackets.(10points)

Allenplacedtoomuch____onsportsandnotenoughonhisstudies.

A)agitation

B)emphasis

C)hesitation

D)interest

Thepoliceofficerissuedaforthemanzsarrest.

A)legend

B)parcel

C)receipt

D)warrant

Solidgeometryhasenabledastronomerstocalculatethepositionsoftheheavenlybodies

oneanother.

A)ontopof

B)nextto

C)inspiteof

D)relativeto

Certainpinetreesaredeliberatelydwarfedforpurposes.

A)constructive

B)dimensions

C)ornamental

D)decorated

11isthattheearthcouldbedestroyedinacol1isionwithanotherplanetorhugemeteor.

A)highlyunlike

B)unlikelyhigh

C)unlikelyhighly

D)highlyunlikely

Thehotelgavethewholefamilytheforthenight.

A)insurrection

B)indignation

C)accommodation

D)affection

Wecouldn,tbuyanythingherebecausetradeinthetownis.

A)depressed

B)deprived

C)volleyed

D)drizzled

Ifthegovernmentalaw,itceasestobealaw.

A)avoids

B)appeals

C)repeals

D)concedes

Robertdidnothearthebellbecausehewascompletelyinhisreading.

A)disguised

B)suspended

C)confirmed

D)absorbed

Theplanagreedonbybothpartiesfellbecauseoftheaccident.

A)out

B)off

C)for

D)through

Themainfeaturesofthetelegraphweredevelopedbytwoinventors,butitwasSamuelMorsewho

successfullytheirideas.

A)financed

B)publicized

C)synthesized

D)disproved

Mosttachometersmeasurethespeedofrotationofashaftorwheelintermsofrevolutions

perminute.

A)pumping

B)wavering

C)floating

D)spinning

Hepaidherabysayinghercakewasthebesthehadevereaten.

A)proposal

B)compliment

C)gratitude

D)satisfaction

Mercury1s____issomuchgreaterthantheEarthzsthatitcompletesmorethanfourrevolutions

aroundtheSuninthetimeittakesEarthtocompleleone.

A)velocity

B)orbit

C)weight

D)diameter

Theflowersinthevase____becausetheyhadnowater.

A)withered

B)sweated

C)decreased

D)ripened

Althoughsalmonmaytravelhundredsofmilesfromwheretheywerespawned,theywillreturn

theretolayeggs.

A)probably

B)reluctantly

C)apparently

D)ultimately

Becauseofainhisvision,Joehadtowearglasses.

A)defect

B)glint

C)scowl

D)fliecker

Hewasaskedto____beforethejudge.

A)execute

B)testify

C)inherit

D)prejudice

Attheageofthreeorthreeandahalfalmostal1chiIdrenfindthe____tonurseryeasy.

A)transition

B)improvement

C)turn

D)transformation

Themi11ionaireofferedtheactressapreciousgiftbuttohissurprisesheturnedit.

A)over

B)back

C)down

D)out

PartIIClozeTest

Directions:Foreachnumberedblankinthefollowingpassage,thereare4choicesmarkedA,B,C

andD)ChoosethebestoneandmarkyouranswerontheANSWERSHEETbyblackeningthecorresponding

letterinthebrackets.(10pointy)

Cigarettes,chewingtobaccoandalcoholaremajorriskfactorsforheadandneckcancers.Nownew

researchsuggeststhatpeople41replacingcigaretteswiththebetacarotenerichcarrot.Beta

carotenerichcarrotBetacarotene,42isconvertedbythebodytovitaminA,mayreverse

aprecancerousconditionknownasleukoplakia(粘膜白斑)，whichappears43whitish(带白色的)

patchesinthemouthandthroat.

PreviousstudieshaveshownthatvitaminAcan44leukoplakiabutcanalsobetoxic(有毒的)at

therequiredlevels.Ina1989pilotstudy,Dr.HarinderGarewaloftheUniversityofArizonaCancer

CentreinTucsonreportsthat25patients45leukoplakiatook30milligramsofbetacarotenea

day----whichis46equaltoeatingfourtosixcarrots,thewhitishpatchesdecreasedordisappeared

inmorethan70percentofthesubjectsaslongastheycontinued47thebetacarotene.Noneof

thetoxic48effectsassociatedwithvitaminAsupplementsoccurred.

Garewalsaysalargertrialmayshowthataninexpensivebetacarotene49couldserveanimportant

publichealthrole.Headandneckcancersareaseriousproblemworldwide,especially50good

nutritionandproperoralcarearelacking.

A)considered

B)consider

C)wouldconsider

D)mustconsider

A)that

B)then

C)as

D)which

A)like

B)unlike

C)as

D)resemble

A)reverse

B)revolve

C)reveal

D)revert

A)at

B)with

C)in

D)of

A)roughly

B)rather

C)toughly

D)probably

A)totake

B)beingtaken

C)taking

D)tobetaking

A)vice

B)by

C)edge

D)side

A)supplement

B)element

C)compliment

D)complement

A)when

B)where

C)what

D)which

PartIllReadingComprehension

Directions:

Eachofthepassagesbelowisfollowedbysomequestions.Foreachquestiontherearefouranswers

markedA,B,CandD)Readthepassagescarefullyandchoosethebestanswertoeachofthe

questions,ThenmarkyouranswerontheANSWERSHEETbyblackeningthecorrespondingletterin

thebrackets.(40points)

Passage1

Thekeypositionandroleofwomenintheprocessofdevelopmentisincreasinglybeing

recognized.AlthoughthethreegreatWorldConferencesofwomenweremoreconcernedwith

recognizingandcompilingapproachestoemancipationwecancurrentlyconfirmageneralsharpening

ofawareness.IthasbecomeclearthattheThirdWorldcultures,inearliertimesstrongly

matriarchal(母权制的)，havebeenweakenedinthisrespectbythemethodsofcolonialeducation

whicharealmostexclusivelydirectedtowardsthemale.Ofthemanycriticismsofthissituation

letonevoicebeheard:"Developmenteducationgroupsandprogrammesareverymuchmaledominated

andlackwoman'sperspectivew.So,too,thehopesplacedinvocational(职业的)training-----

avocationalizationw-----asanaidtoequalityhavebeendisappointedsincethisinitsturnwas

tolargeextentfocussedonthemale.

Inthesecircumstancesweshouldnotbesurprisedthatuntilnowwomenhaveparticipatedleast

intheeducationalprocesseswhichhavebeenintroduced.Only20%attendprimaryschoolandthe

percentageofthosewholeaveearlyishighestamonggirls.Becauseofthelackofbasictraining

onlyaround10%takepartinAdultEducationprogrammes.Henceitisvitallyimportanttosecure

aturningpointbyincreasingtheawarenessoftheneedforeducation.

TheInternationalConferenceatJomtienin1990providedthesolutiontothis:"Amoreeducated

motherraisesahealthierfamily.Shehasfewerandbettereducatedchildren.Sheismore

productiveathomeandintheworkplaceandisbetterabletogetfurthereducationv.Manyproblems

inschoolareconsequencesofincorrectorimproperlybalancednutritioncombinedwithinadequate

hygiene(卫生).Togetherthesefactorscanleadtofailuretokeeppaceinschool.

HenceevenPrimaryEducationforgirlsshouldbedirectedtowardsthebasicneedsandnecessities

andprovideanswerswhichareassimpleaspossible.Inruraldistrictssuchanswerswi11be

differentfromthosegiveninurbanareas.Theeducationofgirlsandwomenmusttoalargedegree

beaneducationforthelifetheywilllead,tailoredtoawoman'sposition.Insayingthiswe

areinfactdemandingthattheeducationofwomen,1ikeal1educationalworkintheThird

World,shouldbeanintegratedpartofthecommunity.Consequentlytherearemanypartnersinthis

processschool,family,smallbusinesses,governmentalandnongovernmentalorganizations.The

educationalskillconsistsinkeepingthisinterplayactiveinsuchawaythatthereisno

deficiencyinmaterialcontent.Animportantconsequenceofthisistheawakeningofthedesire

toquestion,which,ontheonehandpressesforfurthereducationandontheotherforitspractical

application.

FromthepassageitcanbeinferredthatintheThirdWorld.

A)thematriarchalculturewasstrongerinthepast

B)themethodsofcolonialeducationhavemadethematriarchalculturestrongerthanearliertimes

C)thematriarchaleducationisdirectedtowardsmen

D)thedevelopmenteducationgroupsandprogramslackmaledomination

Itisveryimportanttobemoreawareoftheneedforeducationofwomenbecause.

A)womenhaveatleastparticipatedintheeducationalprocesses

B)only1/5ofgirlscanenterelementaryschoolandmostofthemhavetoquitearly

Oonlyabout1/10ofwomenparticipateincontinuingeducation

D)sofarveryfewgirlsandwomentakepartintheeducationalprocesses

Theauthorzsdemandisthat.

A)theeducationofwomenshouldbeaprocessofcommunityactivity

B)theeducationofwomenshouldbeapartofcommunityinwhichmanypartnersarecombined

C)theeducationofwomenshouldbeorganizationsrunbygovernment

D)womenshouldlikealleducationalworkintheThirdWorld

Thebesttitleofthispassageis.

A)ThePositionandRoleofWomenintheDevelopmentofEducation

B)TheEducationofGirlsandWomen

C)TheEducationofWomenintheThirdWorld

D)Women'sEducationGroupsandPrograms

Passage2

Mostspeakersaresurprisedtolearnthatpeoplewhospeakonlyonelanguageformaminorityof

theworld*spopulationandthatmostpeoplefunctionintwoormorelanguages.Whilefewpeople

aretruly"balanced”bilinguals(能使用两种语言的人)orpolyglotswhofeelequallycomfortablewith

alllanguages,thefactisthatmostoftheword'spopulationfunctionsinmorethanone

language.Giventhis,ssomewhatsurprisingthatsomuchattentionispaidintheEnglish

speakingworldtothematteroflearninganadditionallanguage.Ifsomanypeopleseemtodo

itsoeasily,thenjustwhatistheproblem?

Thesimplestansweristhattherereallyisn'tone.Givenampleopportunityandtime,mostpeople

canlearnasmanylanguagesastheywantorneedto.Butasteacherschargedwiththeresponsibility

ofaddingEnglishtothelinguisticinventory(目录)ofnonEnglishspeakingchildren,wemust

beconcernedwithpreciselythesematters-----providingampleandeffectiveopportunityandusing

timeaseffectivelyaspossible.

Thischapterwilllookbrieflyathowchildrenbecomebilingual.First,wez11examinethe

conditionsthatleadtobilingualisminpreschoolers,thenwe'11turnourattentionto1anguange

learningintheclassroom.Infocusingonthedifferencesbetweenlanguageacquisitionathome

andatschool,we711seethattherezsthepotentialforconflictbetweenchildren7sinformal

languagelearninginthehomeandthemoreformalexperienceoftheschool.

Asteachers,wemightwellaskwhyit'snecessarytostudysecondlanguagelearninginpreschoolers

whenschoolagedchildrenareourmajorconcern.Obviously,wezreprimarilyinterestedinhow

schoolagedchiIdrenlearnEngilishasanadditionallanguage.Butit'sequallyimportantfor

ustoknowsomethingabouttheexperienceofyoungerchildren.Thereasonissimple-----thebetter

weunderstandchildren'sprevioussuccessfulexperiencesoflearning,thebetterwecanplanan

effectivelanguagelearningenvironmentforchildreninschoolbilingualismandfinally,the

potentialforconflictbetweenthehomeandschoolexperience.

Whichofthefollowingstatementsisnottrue?

A)Afewpeopleintheworldspeakonlyonelanguagne.

B)Mostpeoplespeaktwoormorelanguages.

C)Aminorityofpeoplecanfunctioninonlyonelanguage.

D)Amajorityofpeoplecanfunctioninonlyonelanguage.

Theword“ample“inparagraph2meanseverythingexcept.

A)substantialorsuffcient

B)insufficientormeagre

C)abundantorplentiful

D)morethanisnecessary

Themainideaofthechapterthatthispassageintroducesis.

A)peoplewhospeakonelanguagearetheminorityoftheworldzspopulation

B)mostpeoplecanlearnasmanylanguagesastheywantorneedto

C)howchildrenbecometwolanguagelearnersathomeandatschool

D)ourchiefconcernisschoolagedchildrenintermsofsecondlanguagelearning

Theorderofthefollowingpartsofthischapterwi11be.

A)homebilingualism,schoolbilingualismandthepotentialforconflictbetweenthehomeand

schoolexperience

B)learningintheclassroom,bi1ingualisminpreschoolersandthedifferencesbetweenlanguage

acquisitionathomeandatschool

C)theproblemaboutlearninganadditionallanguage,teachers'responsibilityofaddingEnglish

to1inguisticinventoryandthenecessitytostudysecondlanguagelearning

D)thesurpriseaboutthefunctionoflanguages,thepopulationrelatedto1anguagelearningand

thebriefexaminationoftheconditionsleadingtobilingualism

Passage3

Nowlet'slookourselvesasaspeciesinrelationtoecosystembalance.

Modernscientistsbelievethathumankind,1ikeotheranimals,evolvedthroughmi1lionsofyears

ofchangesandadaptationstotheenvironmentandthatourmostdirectevolutionaryancestorwas

probablyanearlierspeciesoftheprimate(monkey,ape)group.Despitethissimilaritywithother

creatures,however,theevolutionofhumankinddiffersfromthatofotherspeciesinoneimportant

anduniqueway.

Inotherspeciesevolutionhasledtospecialization,bothinthespeciesabilitiesandinits

placewithintheenvironmentalstructure.Forexample,thegiraffe(长颈鹿)ismarvelouslyadapted

to,grazingontreetopsbut,assuch,itisalsospecializedandthusrestrictedtograzingontrees

andshrubs.Onlywithgreatdifficultycanitbenddowntograzeontheground.Similarly,the

anteaterisextremelywelladaptedtoeatingantsbutisincapableofcatchingoreatingother

prey.Thesameistrueforcountlessotherspecies.

Forhumankindthereverseistrue.Ourevolutionhadledtoaverygeneralizedcapability.Ourhighly

developedintelligenceandabilitytomakeandhandletoolsmeanthatwecandovirtually

anything.Ratherthanevolvingintoaspecializedro1einbalancewithnaturalenemies,competitive

speciesandenvironmentalfactors,humansevolvedinsuchawaythatwearecapableofmovinginto

everyenvironmentonEarthandevenintospace.Nonaturalpredatororcompetitoroffers

significantresistance,andothernaturalenemiessuchasdiseasehavebeensubstantially

controlled.

Saidanotherway,weseeinhumankindatremendousimbalancebetweenbiotic(生命的；生物

的)potentialandenvironmentalresistance.Theresultistherapidlyincreasingwor1d

population,frequentlyreferredtoasthepopulationexplosion.Further,tosupportourgrowing

population,naturalecosystemsarebeingincreasinglydisplacedbyhuman

habitations,agriculture,andotherhumansupportingactivities.

Fromthepassagewecaninferthat

A)theevolutionofhumankindisveryimportanttoearlierspecies

B)duringtheprocessoftheevolutionhumankindchangedalotandgotusedtotheenvironment

gradually

C)humanbeingsaresimilartoothercreaturesinauniqueway

D)theevolutionofhumankinddiffersfromthatofotherspeciesbecauseitwasthroughmi11ions

ofyearsofchange

Whichofthefollowingstatementsistrue?

A)Differentspeciescannotadapttothesameenvironmentbecausetheyhavedifferentabi1ities.

B)Differentspeciesarespecializedbecausetheyareindifferentplacesintheenvironmental

structure.

C)Specializationofdifferentspeciesinabilitiesandplacesintheenvironmentalstructure

resultfromevolution.

D)Thegiraffeisspecializedingrazingontreetopsbecauseitisrestrictedtoeatingants.

Humanscanpracticallydoanythingbecause____.

A)theyhaveevolvedintoaspecializedroleinbalancewithnaturalenemies

B)theyareabletomoveintoeveryenvironmentonEarthandeveninSpace

C)theyaresoevolvedthattheycancontrolothernaturalenemiesaswellasdisease

D)theirintelligenceandabilitytoproduceandusetoolsaredevelopedgreatly

Themainideaofthelastparagraphis.

A)thepopu1ationexplosionistheresultofamazingimbalancebetweenbioticpotenitaiand

environmentalresistance.

B)therapidincreaseofthepopulationisknownasthepopulationexplosion

C)humanshavetodestroynaturalecosysteminordertosupportthemselves

D)humanhabitationsandagricultureareactivitiestosupporttherapidlygrowingpopulation

Passage4

Thetechnologicalrevolutionthatwillprevailforthereminderofthiscenturywillcreatejobs

andprofessionsthataslittleasfiveyearsagowerenonexistent.Thesenewlydevelopedmarkets

wi11demandofworkersanunderstandingofsophisticatedtechnicalcommunicationssystemsaswell

asanincreasedtechnicalexpertise.Bytheyearbasicskillsthatoncewerevitaltobusiness

willberenderedobsolete(过时的).Thespotwelderontheautomobileproductionline,theclerk

typistinanoffice,thefieldworkeronafarmwi11gothewayofthesteamboatpilotandthe

blacksmith.

Themostsignificanttrendinyearstocomewillbetheshiftfromformationtypejobs(factory

work,officetyping,andgeneralclericalwork)toinformationtypejobs(programming,word

processing,andsupervisingtechnicalmachinery).TheAmericaneconomywillwitnessthedemise(ih

位)ofthebluecollarworkerasautomationandroboticsbecomemoreprevalent,heralding(fi

告)theriseofthesteelcollarworker.SuchtraditionalbluecollaremployersasGeneral

MotorsandU.S.Steelhavealreadybeguntoautomatetheirfactories-----afactreflectedinthe

swollenunemploymentrollsinourindustrialstates.

Bycontrast,officeandservicejobswillbeabundant,butonlyforthosepreparedtoimprovetheir

technicalskills.Againitwillbeautomationthatwilldisplacemanyofthelowskilledand

semiskilledworkersinthepresenteconomy.

Infact,theeraofthepaperlessofficehasalreadybegun.Ithasbeenpromotedbytwoprincipal

deve1opments:computersthatprocessbusinessinformationandtheexplosivegrowthof

telecommunicationssystemsandproducts.Thisofficerevolutionnotonlyhaschangedhowworkis

doneandinformationishandledbuthasredefinedthefunctionofeveryonewhoworksinan

office,fromthecorporateexecutivedowntothelowliestclerk…

Forthejobhunterof,scanningclassifiedadswillbeaquickeducationinhowdrasticallythe

workplacewillhavechanged.Heorsheis1ikelytoseeopeningforsuchpositionsasbiological

historians,biofarmingexperts,computerartcurators,fiberopticstechnicians,robot

retrainers,spacetrafficcontrollers,andteleconferencingcoordinators,tocitebutafew.

Therewi11alwaysbefarms,butbythenextcenturyfarmworkersasweknowthemwillbescarcer.The

businessoffarmingwi11becomeevermorecomplex.Withcomputerizedoperationsandrobot

harvesters,therewillbenoneedforunskilledlabor.Thefarmwillbeaplaceforpeoplewith

trainingaselectronictechnicians,bioengineers,andcomputerprogrammers.Indeed,thehuman

farmworkersomedaymaybesimplythepersonwiththephonenumberofthenearestrobotrepairman.

Accordingtothepassage,informationtypejobs“refertojobs.

A)whichresultintheactualinformationofamaterialproduct

B)whichprovideinformationforpeoplewhotypewithatypewriter

C)whichfocusontheelectronicprocessingofinformation

D)whicharetakenbybluecollarworkersautomatically

Whichofthefollowingisnottrue?

A)Thereisatendencythatpeopleshiftfromformationtypejobstoinformationtypejobs.

B)Therewillbeenoughofficeandservicejobs.

C)0fficeworkhasbeguntobecomepaperless.

D)Farmworkwillbedonebycomputersinsteadofunskilledlaborers.

Thetwomajordevelopmentshavepromotedtheofficerevolution.Theyare.

A)paperlessworkandtechnicalskills

B)computersandtelecommunicationssystemsandproducts

C)automaticfactoriesandindustrialstates

D)automationandthereductionoflowskilledandsemiskilledworkers

Themainideaforthispassageis:

A)Ourfutureworldwillbeverydifferentfromtoday'sworld.

B)Farmworkwi11belargelyautomatedandcomputerizedinthefuture.

C)Therewillbemoreofficejobsandfewerfactoryjobsinthefurure.

D)Newtechnologywillcreatemanynewjobsandprofessionsandwillmakemanyoldonesoutdated.

Passage5

We'vebeenhearingaboutthegreenhouseeffectforyears.Now,twoU.S.reportspredictthatit

mayhappensoonerthanwecountedon.ReleasedseparatelybytheU.S.EnvironmentalProtection

Agency(EPA)andtheNationalResearchCouncil(NRC),thereportswarnthatthefirsteffectsmay

befeltasearlyasthe1990s.

Agreenhousecanproduceatropicalc1imateinsubzeroweatherbytrappingthesun'srays

underglass.Scientistssaywc'recreatingthesameeffectonaglobalscalebyburningfossil

fuels(coal,oil,gas).Carbondioxideisabyproductoftheburning.Thegasallowssunlightto

penetratetheatmospherebuts1owstheescapeofheatbackintospace.Thisonewaytripfor

thesun'sraystendstomakeourplanetabiggreenhouse.Wearebeginningtowarmup,justlike

apotofvioletsunderglass.

We1vebeenburningfossilfuelsforcenturies.However,theautomobileandheavyindustryhave

speededupthereleaseofcarbondioxidesomuchthatexpertssayitfsalmosttoolatetoprevent

thecomingresults.Evenaswitchtootherformsofenergymightdonomorethandelaychanges

forafewyears.

Awarmingtrendinclimatewillbethemaineffect.Atfirst,thatseemsalltothegood,especially

forCanadians.Butacloserlookrevealsdangerswhichmaycallformajoradjustmentsallover

theworld.Averagetemperaturesmayriseby2℃bytheyear,andby5℃by2100.Increasesupto

threetimesaslargemaytakeplaceatthepoles,however,causingtheicecapstomeltrapidly.The

oceanswouldthenrise,causingfloodingofcoastalcitiessuchasHalifax.Tocompensatea

little,HalifaxcouldhaveaclimatelikeDaytonaBeach,Florida,by2100.

Coastalcitieswi11havetoplanforcomingchanges.Thelossofland,houses,andfactoriescan

bereducedbyplanningnewbuildingsites,erectingseawalls,andcontouring(循等高线修筑)the

land.Evenso,lowlyingcountrieswillsuffer.OnethirdoftheNetherlands,Floridaand

Louisiana,and1argepartsofBangladeshwi11besubmerged.Manyportcitieswi11looklikeVenice.

Thewarmerclimatewillbringchangedpatternsofdroughtandrainfall.