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1、EnglishWeekly英语周报大学网2002年1月大学英语六级考试试题及参考答案PartIIReadingComprehension(35minutes)PassageOneQuestions21to25arebasedonthefollowingpassage:Navigationcomputers,nowsoldbymostcar-makers,cost$2,000andup.Nosurprise,then,thattheyaremostoftenfoundinluxurycars,likeLexus,BMWandAu
2、di.Butitisadevelopingtechnology—meaningpricesshouldeventuallydrop—andthemarketdoesseemtobegrowing.Evenatcurrentprices,anavigationcomputerisimpressive.Itcanguideyoufrompointtopointinmostmajorcitieswithpreciseturn-by-turndirections—spokenbyaclearhuman-soundingvoice,an
3、dwrittenonascreeninfrontofthedriver.Thecomputerworkswithanantenna(天线)thattakessignalsfromnofewerthanthreeofthe24globalpositioningsystem(GPS)satellites.Bymeasuringthetimerequiredforasignaltotravelbetweenthesatellitesandtheantenna,thecar’slocationcanbepinneddownwithin
4、100meters.Thesatellitesignals,alongwithinputsonspeedfromawheel-speedsensoranddirectionfromameter,determinethecar’spositionevenasitmoves.Thisinformationiscombinedwithamapdatabase.Streets,landmarksandpointsofinterestareincluded.Mostsystemsarebasicallyidentical.Thediff
5、erencescomeinhardware—thewaythecomputeracceptsthedriver’srequestfordirectionsandthewayitpresentsthedrivinginstructions.Onmostsystems,adriverentersadesiredaddress,motorwayjunctionorpointofinterestviaatouchscreenordisc.ButtheLexusscreengoesastepfurther:youcanpointtoan
6、yspotonthemapscreenandgetdirectionstoit.BMW’ssystemoffersasetofcrosshairs(瞄准器上的十字纹)thatcanbemovedacrossthemap(youhaveseveralchoicesofmapscale)topickapointyou’dliketogetto.Audi’sscreencanbeswitchedtoTVreception.Eventhevoicesthatrecitethedirectionscandiffer,withbetter
7、systemslikeBMW’sandLexus’shavingawidervocabulary.TheinstructionsareavailableinFrench,German,Spanish,DutchandItalian,aswellasEnglish.Thedrivercanalsochooseparametersfordeterminingtheroute:fastest,shortestornofreeways(高速公路),forexample.21.Welearnfromthepassagethatnavig
8、ationcomputers________.A)willgreatlypromotesalesofautomobilesB)mayhelpsolvepotentialtrafficproblemsC)arelikelytobeacceptedbymoredriversD)w
