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1、2019-2020年高三英语总复习第一部分回归教材Unit3Lifeinthefuture课时作业新人教版必修Ⅰ.阅读理解(xx·海南中学月考)EvenasGoogleplanstotestitsfleet(车队)ofselfdrivingcarsonpublicroadsthissummer,itsbusinessmodelremainsabitofamystery.By2025,asmanyas250,000selfdrivingvehiclescouldbesoldeachyearglobally,accordin
2、gtoastudybyanindustryresearchfirm.“VehiclesthatcantakeanyonefromAtoBatthepushofabuttoncouldtransformmobilityformillionsofpeople,”saidChrisUrmson,directorofGoogle'sselfdrivingcarproject.Fornow,Googlehasnoplanstosellanyofitsselfdrivingcars.Theyarestrictlyforresearc
3、h.ButtheywillhitpublicroadsthissummernearGoogle'sheadquartersinMountainView,California.Previoustestinghastakenplaceonlyonclosedcourses.Thecarsarebuilttooperatewithoutasteeringwheel,accelerator(油门)orbrakepedal.“Oursoftwareandsensorsdoallthework,”Urmsonsaid.“Theveh
4、icleswillbeverybasic—wewanttolearnfromthemandadaptthemasquicklyaspossible—buttheywilltakeyouwhereyouwanttogoatthepushofabutton.”Theprototype(雏形)arethefirstofa100carfleetthetechgiantisbuilding.Inthelongrun,Urmsonseesafutureofsaferroads—themajorityofautoaccidentsar
5、ecausedbyhumanerror—andfewertrafficjams.Roboticcarscouldalsoshuttlepeoplewhocan'tdrivebecauseofageorillness.Googlehassaidthatselfdrivingcarscouldlaunchnewbusinessmodelsinwhichpeoplebuytheuseofvehiclestheydon'town.Thepanyhasalreadytestedothertypesofselfdrivingcars
6、onpublicstreets,includingmodifiedLexussportutilityvehicles,underaspecialpermitprogrambytheCaliforniaDepartmentofMotorVehiclesthatrequiresahumandriveratthecontrols.Thestatehasissuedsixotherpaniespermitstooperatesuchcars,includingDelphi,MercedesBenz,Volkswagen,Tesl
7、a,BoschandNissan.Thevehiclesthatwillbetestedonopenroadsthissummerwillhaveremovablesteeringwheels,acceleratorsandbrakepedalstoallow“safetydrivers”totakecontrolifneeded.Googlesaysthecarsaresafe.Thevehicleshavesensorsthat“candetectobjectsouttoadistanceofmorethantwof
8、ootballfieldsinalldirections,whichisespeciallyhelpfulonbusystreetswithlotsofintersections,”Urmsonsaid.“We'relookingforwardtolearninghowthemunityunderstandsandi