[简答]  二、完型填空：阅读下面短文，从A、B、C三个选项中选择合适的内容将短文补充完整。   Youjumpintoacar,tellitwhereyouwanttogothensitbackandletacomputertakecontrol.Itseemsadreaminthefuture.Itisn't.   Inmanywayssuchdriverlesscarsarealreadywithus.Thereispartialautomationinmanycars,suchasintelligentbraking,lanedeparturewarningandautomaticparking.Thesystemsarethere carscanprettymuchdrivethemselves.Noonenoticedtheintroductionofcruisecontrol.We'vegotcollisionavoidance,andwe'llsoonhaveautomaticlanechange.   Improvingthistechnologyshouldmaketheroadssafer.Machinesaremuchbetteratfollowingrulesthanhumans.Drivewaysignsadvisedriverstoslowdowntoavoid jams.Theyareoftenignoredbydrivers.Butitwon'thappen acomputer.Driverlesscarscouldalsochoosethebestroutetoavoidtrafficjams.   Fewerjamswillmean stop-startdriving.Maintainingsmoothandconstantspeedswillimprovefuelefficiency.Computerscouldalsobeprogrammedtotakethegreenestroute,ratherthanthefastestone.Under computercontrol,carscouldalsotravelmuchclosertogether.   Theycaneffectively“slipstream”oneanotheranduselessfueltomovethemselvesforward.Theycanevenformmulti-car“trains”going highspeeds.However,withdriverlesscarsontheroads,therewillbepotentialtrustissuesbetweenpeopleandmachines.Wecouldthereforeseeguardrailsbackonthesidesofpavements.Thiswouldbeabackwardsstep.1.  A.because   B.sothat    C.suchas2.  A.creating    B.tocreat   C.creat3.  A.with       B.to       C.on4.  A.more      B.little      C.less5.  A.over       B.in       C.at