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1、东大15秋学期《大学英语(三)》在线作业3满分答案阅读理解单选题完型填空一、阅读理解（共4道试题，共40分。）1.Believeitornot,opticalillusion(错觉)cancuthighwaycrashes.Japanisacaseinpoint.Ithasreducedautomobilecrashesonsomeroadsbynearly75percentusingasimpleopticalillusion.Bentstripes,calledchevrons(人字形),paint
2、edontheroadsmakedriversthinkthattheyaredrivingfasterthantheyreallyare,andthusdriversslowdown.NowtheAmericanAutomobileAssociationFoundationforTrafficSafetyinWashingtonD.C.isplanningtorepeatJapan’ssuccess.Startingnextyear,thefoundationwillpaintchevronsando
3、therpatternsofstripesonselectedroadsaroundthecountrytotesthowwellthepatternsreducehighwaycrashes.Excessivespeedplaysamajorroleinasmuchasonefifthofallfataltrafficaccidents,accordingtothefoundation.Tohelpreducethoseaccidents,thefoundationwillconductitstest
4、sinareaswherespeed-relatedhazardsarethegreatest---curves,exitslopes,trafficcircles,andbridges.Somestudiessuggestthatstraight,horizontalbarspaintedacrossroadscaninitiallycuttheaveragespeedofdriversinhalf.However,trafficoftenreturnstofullspeedwithinmonthsa
5、sdriversbecomeusedtoseeingthepaintedbars.Chevrons,scientistssay,notonlygivedriverstheimpressionthattheyaredrivingfasterthantheyreallyarebutalsomakealaneappeartobenarrower.Theresultisalongerlastingreductioninhighwayspeedandthenumberoftrafficaccidents.1).T
6、hepassagemainlydiscusses__________.A.anewwayofhighwayspeedcontrolB.anewpatternforpaintinghighwaysC.anewapproachtotrainingdriversD.anewtypeofopticalillusion-----------------选择：A2).Onroadspaintedwithchevrons,driverstendtofeelthat__________.A.theyshouldavoi
7、dspeed-relatedhazardsB.theyaredrivinginthewronglaneC.theyshouldslowdowntheirspeedD.theyareapproachingthespeedlimit-----------------选择：C3).Theadvantageofchevronsoverstraight,horizontalbarsisthattheformer___________.A.cankeepdriversawakeB.cancutroadacciden
8、tsinhalfC.willhavealongereffectondriversD.willlookmoreattractive-----------------选择：C4).TheAmericanAutomobileAssociationFoundationforTrafficSafetyPlansto__________.A.tryouttheJapanesemethodincertainareasB.changetheroadsign
