PARTVREADINGCOMPREHENSION

Inthissectiontherearefourpassagesfollowedbyquestionsorunfinishedstatements,eachwithfoursuggestedanswersmarkedA,B,CandD.Choosetheonethatyouthinkisthebestanswer.

TEXTA

Racket,dinclamor,noise,whateveryouwanttocallit,unwantedsoundisAmerica'smostwidespread

nuisance.Butnoiseismorethanjustanuisance.Itconstitutesarealandpresentdangertopeople'shealth.Day

andnight,athome,atwork,andatplay,noisecanproduceseriousphysicalandpsychologicalstress.Nooneis

immunetothisstress.Thoughweseemtoadjusttonoisebyignoringit,theear,infact,neverclosesandthe

bodystillresponds—sometimeswithextremetension,astoastrangesoundinthenight.

Theannoyancewefeelwhenfacedwithnoiseisthemostcommonoutwardsymptomofthestressbuilding

upinsideus.Indeed,becauseirritabilityissoapparent,legislatorshavemadepublicannoyancethebasisof

manynoiseabatementprograms.Themoresubtleandmoreserioushealthhazardsassociatedwithstress

causedbynoisetraditionallyhavebeengivenmuchlessattention.Nevertheless,whenweareannoyedormade

irritablebynoise,weshouldconsiderthesesymptomsfairwarningthatotherthingmaybehappeningtous,

someofwhichmaybedamagingtoourhealth.

Ofmanyhealthhazardstonoise,hearinglossisthemostclearlyobservableandmeasurablebyhealth

professionals.Theotherhazardsarehardertopindown.Formanyofus,theremaybeariskthatexposuretothe

stressofnoiseincreasessusceptibilitytodiseaseandinfection.Themoresusceptibleamongusmayexperience

noiseasacomplicatingfactorinheartproblemsandotherdiseases.Noisethatcausesannoyanceandirritability

inhealthpersonsmayhaveseriousconsequencesforthesealreadyillinmindorbody.

Noiseaffectsusthroughoutourlives.Forexample,thereareindicationsofeffectsontheunbornchildwhen

mothersareexposedtoindustrialandenvironmentalnoise.Duringinfancyandchildhood,youngstersexposed

tohighnoiselevelsmayhavetroublefallingasleepandobtainingnecessaryamountsofrest.

Why,then,istherenotgreateralarmaboutthesedangers?Perhapsitisbecausethelinkbetweennoiseand

manydisabilitiesordiseaseshasnotyetbeenconclusivelydemonstrated.Perhapsitisbecausewetendto

dismissannoyanceasapricetopayforlivinginthemodernworld.Itmayalsobebecausewestillthinkof

hearinglossasonlyanoccupationalhazard.

1.InParagraph1,thephrase"immuneto"areusedtomean___.

A.unaffectedby

B.hurtby

C.unlikelytobeseenby

D.unknownby

2.Theauthor'sattitudetowardnoisewouldbestbedescribedas___.

A.unrealistic

B.traditional

C.concerned

D.hysterical

3.Whichofthefollowingbeststatesthemainideaofthepassage?

A.Noiseisamajorproblem;mostpeoplerecognizeitsimportance.

B.Althoughnoisecanbeannoying,itisnotamajorproblem.

C.Noiseisamajorproblemandhasnotyetbeenrecognizedassuch.

D.Noiseisamajorproblemaboutwhichnothingcanbedone.

4.Theauthorcondemnsnoiseessentiallybecauseit___.

A.isagainstthelaw

B.canmakesomepeopleirritable

C.isanuisance

D.inagangertopeople'shealth

5.Theauthorwouldprobablyconsiderresearchabouttheeffectsnoisehasonpeopletobe___.

A.unimportant

B.impossible.

C.awasteofmoney

D.essential

Underthis____pressuresomeoftherocksevenbecameliquid.

______isnotaseriousdisadvantageinlife.

Frankalmostneverreceivedanyeducation,____?

TEXTC

Therearetwofactorswhichdetermineanindividual'sintelligence.Thefirstisthesortofbrainheisbornwith.

Humanbrainsdifferconsiderably,somebeingmorecapablethanothers.Butnomatterhowgoodabrainhehas

tobeginwith,anindividualwillhavealoworderofintelligenceunlesshehasopportunitiestolearn.Sothe

secondfactoriswhathappenstotheindividual—thesortofenvironmentinwhichheisbroughtup.Ifan

individualishandicapped(不利)environmentally,itislikelythathisbrainwillfailtodevelopandhewillnever

attainthelevelofintelligenceofwhichheiscapable.Theimportanceofenvironmentindetermininganindividual'sintelligencecanbedemonstratedbythecasehistoryoftheidenticaltwins,PeterandMark.Beingidentical,thetwinshadidenticalbrainsatbirth,andtheirgrowthprocesseswerethesame.Whenthetwinswerethreemonthsold,theirparentsdied,andtheywere

placedinseparatefoster(抚养)homes.Peterwasraisedbyparentsoflowintelligenceinanisolatedcommunity

withpooreducationalopportunities.Markwasrearedinthehomeofwell-to-doparentswhohadbeentocollege.Hewasreadtoasachild,senttogoodschools,andgiveneveryopportunitytobestimulated

intellectually.Thisenvironmentaldifferencecontinueduntilthetwinswereintheirlateteens,whentheywere

giventeststomeasuretheirintelligence.Mark'sI.Q.was125,twenty-fivepointshigherthantheaverageand

fullyfortypointshigherthanhisidenticalbrother.Givenequalopportunities,thetwins,havingidenticalbrains,

wouldhavetestedatroughlythesamelevel.

11.Thisselectioncanbestbetitled____________.

A.MeasuringYourIntelligence

B.IntelligenceandEnvironment

C.TheCaseofPeterandMark

D.HowtheBrainInfluencesIntelligence

12.Thebeststatementofthemainideaofthispassageisthat_______.

A.humanbrainsdifferconsiderably

B.thebrainapersonisbornwithisimportantindetermininghisintelligence

C.environmentiscrucialindeterminingaperson'sintelligence

D.personshavingidenticalbrainswillhaveroughlythesameintelligence

13.Accordingtothepassage,theaverageI.Q.is_______.

A.85.B.100C.110D.125

14.Thecasehistoryofthetwinsappearstosupporttheconclusionthat_______.

A.individualswithidenticalbrainsseldomtestatthesamelevelB.anindividual'sintelligenceisdeterminedonlybyhisenvironment

C.lackofopportunityblocksthegrowthofintelligence

D.changesofenvironmentproducechangesinthestructureofthebrain

15.Thispassagesuggeststhatanindividual'sI.Q._______.

A.canbepredictedatbirth

B.staysthesamethroughouthislife

C.canbeincreasedbyeducation

D.isdeterminedbyhischildhood