高考阅读科技环保类专练及详解.doc

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1、科技环保类文章在高考英语试题屮出现的频率最高，几乎每年都有一片，。此类文章一般为说明文，但也常常夹杂着叙述和议论，并经常出现一些较新的科技名词或术语。考生若经常阅读英语报刊，具备丰富的课外知识，并积累一定的吋新词汇，对解读此类文章会大有帮助。A难度：难字数：258words标准用吋：6minutes实际用吋：（NMET111东E篇）AdevicethatstopsdrivesfromfallingasleepatthewheelisabouttoundergotestingatDepartmentof

2、Transportlaboratoriesandcouldgoonsalewithin12months.Thesystem,calledDriverAlert,aimstoreducedeadlyroadaccidentsby20%一40%thatarecausedbytiredness.Airlinepilotscanalsouseittoreducethe30%ofallpilot-erroraccidentsthatarerelatedtofatigue.DriverAlertisbasedon

3、acomputerizedwristband.Thedevice,wornbydrivesorpilots,givesoutasoundabouteveryfourminutesduringacarjourney.Aftereachsoundthedrivermustrespondbysqueezingthesteeringwheel（方向盘）.Asensorinthewristbanddetectsthispressingactionandmeasuresthetimebetweenthesound

4、andthedriver^sresponse.Tirednessisdirectlyrelatedtoadriver^sresponsetime.Usually,awatchfuldriverwou1dtakeabout400millisecondstorespond,butoncethatfallstomorethan500milliseconds,itsuggeststhatthedriverisgettingsleepy.Insuchcasesthedevicegivesoutmoreregul

5、arandloudersounds,showingthatthedrivershouldopenawindoworstopforarest.Ifthedriver^sresponsecontinuestoslowdown,thesoundsbecomemorefrequentuntilanonstopalarmwarnsthatthedrivermuststopassoonaspossible.Thedevicehasbeendeliveredtothedepartment?slaboratories

6、fortesting.Ifthesetests,scheduledforsixmonths'time,aresuccessful,themakerswillbringtheproducttomarketwithinaboutayear.1.Accordingtothetext,DriverAlert.A.aimstoreducetiredness-relatedaccidentsB.aimstopreventdriversfromsleepingC.hasgonethroughtestingatlab

7、oratoriesD.hasbeenonsalefor12months2.HowshouldadriverrespondtothesoundsfromDriverAlert?A.Bysoundingawarning.B.Bycheckingthedrivingtime.C.Bytouchingthewristhand.D.Bypressingthesteeringwheel.3.Wecanlearnfromthetextthatthedriverneedstostopforabreakwhenhisr

8、esponsetimeis•A.about400millisecondsB.over500millisecondsC.below500millisecondsD.about4minutes4.Whenthedrivergetssleepywhiledriving,DriverAlert•A.movesmoreregularlyB.opensthewindowforthedriverC.stopsworkingproperlyD.soundsmorefre