距离2017年6月大学英语四级考试还有一个半月的时间，已经报名的同学备考一定要抓紧，不要临时抱佛脚。新东方网英语四级频道为大家整理了英语四级阅读理解每日一练，每天一道题考试不担心。
Therearetwofactorswhichdetermineanindividual'sintelligence.Thefirstisthesortofbrainheisbornwith.Humanbrainsdifferconsiderably,somebeingmorecapablethanothers.Butnomatterhowgoodabrainhehastobeginwith,anindividualwillhavealoworderofintelligenceunlesshehasopportunitiestolearn.Sothesecondfactoriswhathappenstotheindividual—thesortofenvironmentinwhichheisreared.Ifanindividualishandicappedenvionmentally,itislikelythathisbrainwillfailtodevelopandhewillneverattainthelevelofintelligenceofwhichheiscapable.
Theimportanceofenvironmentindetermininganindividual'sintellingencecanbedemonstratedbythecasehistoryoftheidenticaltwins,PeterandMarkX.Beingidentical,thetwinshadidenticalbrainsatbirth,andtheirgrowthprocesseswerethesame.Whenthetwinswerethreemonthsold,theirparentsdied,andtheywereplacedinseparatefosterhomes.Peterwasreatedbyparentsoflowintelligenceinanisolatedcommunitywithpooreducationalpooprtunities.Markwasrearedinthehomeofwell-to-doparentswhohadbeentocollege.Hewasreadtoasachild,senttogoodschools,andgiveneveryopportunitytobestimulatedintellectually.Thisenviromentaldifferencecontinueduntilthetwinswereintheirlateteens,whentheyweregibentesetstomeasuretheirintelligence.Mark'sI.Q.was125,twenty-fivepointshigherthantheaverageandfullyfortypointshigherthanhisidenticalbrother.Givenequalopportunities,thetwins,havingidenticalbrains,wouldhavetestedatroughlythesamelevel.
1.Thisselectioncanbestbetitled_________.
a.MeasuringYourIntelligence
b.IntelligenceandEnvironment
d.HowthebrainInfluencesIntelligence
2.Thebeststatementofthemainideaofthispassageisthat_____.
a.humanbrainsdifferconsiderably
b.thebrainapersonisbornwithisimprotantindetermininghisintelligence
c.environmentiscrucialindeterminingaperson'sintelligence
d.personshavingidenticalbrainswillhaveroughlythesameintelligence
3.Accordingtothepassage,theaverageI.Q.is_____.
4.Thecasehistoryofthetwinsappearstosupporttheconclusionthat_______.
a.individualwithidenticalbrainsseldomtestatsamelevel
b.anindividual'sintelligenceisdeterminedonlybyhisenviroment
c.lackofopportunityblocksthegrowthofintelligence
d.changesofenviromentproducechangesinthestructureofthebrain
5.Thispassagesuggeststhatanindividual'sI.Q.______.
b.staysthesamethrouthouthislife
c.canbeincreasedbyeducation
d.isdeterminedbyhischildhood
答案：bcbcc
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