全新版大学英语(第二版)综合教程4-Unit 2 Text A 课后习题答案

《全新版大学英语(第二版)综合教程4-Unit 2 Text A 课后习题答案》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、Unit2TextAPage37PairWork1.Howimportantwastheautomobileindustryinthetwentiethcentury?Theautomobileindustryrankedasamongthemostlucrativeandpowerfulindustriesofthetwentiethcentury.2.Whatwillhappentocarsandroadsinthetwenty-firstcentury?Carsandroadswillberevolutionizedi

2、nthetwenty-firstcentury.3.Whydoestheauthorsaythekeytotomorrow's"smartcars"willbesensors?Becauseitissensorsthatwillenablevehiclesandroadstobeabletosee,hear,feel,smell,talk,andact.4.Howwouldsensorshelpreducetrafficfatalities?Sensorscansenseifadriverisdrunkandrefuseto

3、startuptheengine.5.Whatisthefunctionoftheradarshiddeninthebumpers?Theradarshiddeninthebumperscanscanfornearbycars.Ifyoumakeaseriousdrivingmistakethecomputerwillsoundanimmediatewarning.6.Howwillasmartcaralertadriverwhofeelsdrowsy?Ifthedriver'seyelidscloseforacertain

4、lengthoftimeandhisorherdrivingbecomeserratic,acomputerinthedashboardcouldalertthedriver.7.Whatmakesitpossibleforsmartcarstodeterminetheirapproximatelocation?GPSmakesitpossibleforsmartcarstodeterminetheirlocationontheearthtowithinaboutahundredfeet.8.Whataretheprospe

5、ctsforapplicationsofGPS?Withthepriceofmicrochipsdroppingsodrastically,futureapplicationsofGPSarevirtuallylimitless.9.Whatis"telematics"expectedtoachieveinincreasingtheefficiencyandsafetyofhighwaytransportation?Itisexpectedtoputsmartcarsonsmarthighways.10.Whataretra

6、fficengineersdoingonInterstate15closetoSanDiego?TheyareinstallinganMIT-designedsystemwhichwillintroducethe"automateddriver".11.Whathopesdopromotersofthesmarthighwayhaveforitsfuture?Theyhavegreathopesforitsfuture.By2010,telematicsmaywellbeincorporatedintooneofthemaj

7、orhighwaysintheUnitedStates.By2020,telematicscouldbeadoptedinthousandsofhighwaysintheUnitedStates.12.Whataretheadvantagesofsmarthighways?Smarthighwayscouldbeanenvironmentalboon,savingfuel,reducingtrafficjams,decreasingairpollution,andservingasanalternativetohighway

8、expansion.Page38WorkingonYourOwn1.PartOneParas.1-3Newtechnologywillhaveadramaticimpactoncarsandhighwaysinthe21stcentury.PartTwoParas.4-9Withtheai