Questions51to55arebasedonthefollowingpassage.
Imagineyouenteracarwithnosteeringwheel,nobrakeoracceleratorpedals(踏板).Underavoice-activatedcommand,yousayanaddress."Thefastestroutewilltakeus15.3minutes.ShouldItakeit"Yousay"yes"andyouareonyourway.Thecarrespondsandstartsmovingallbyitself.Allyouhavetodoissitbackandrelax.
Howweirdwoulditbeif,onedayinthefuture,everyonehadsuchacarNocrazydriving，noinsults，nocuttingin;trafficlawswouldberespectedanddrivingmuchsafer.Ontheotherhand,imaginethecostsavingsforlocalpoliceenforcementandtownbudgetswithoutallthosespeedingandparkingtickets.
Butwemustalsoconsidertheimpactofthenewtechnologyonthosewhonowdependondrivingfortheirlivelihoods.AccordingtotheU.SDepartmentofLabor,inMay2015therewere505,560registeredschoolbusdrivers.TheAmericanTruckingAssociationlistsapproximately3.5millionprofessionaltruckdriversintheU.S.
51.Whatwouldbetheimpactoftheextensiveuseofdriverlesscars
A)Peoplewouldbedrivinginamorecivilizedway.
B)Itwouldsavelocalgovernmentsalotofmoney.
C)Morepolicemenwouldbepatrollingthestreets.
D)Trafficregulationswouldbeathingofthepast.
52.Howwouldtheelderlyandthedisabledbenefitfromdriverlesscars
A)Theycouldenjoygreatermobility.C)Theywouldhavenotroubledriving.
B)Theywouldsuffernoroadaccidents.D)Theycouldgoanywheretheywant.
53.Whatwouldbethenegativeimpactofdriverlesscars
A)Theconflictbetweenlaborandmanagementintensify.
B)Thegapbetweenvarioussectorsofsocietywouldbewidened.
C)Professionaldriverswouldhaveahardtimeadaptingtonewroadconditions.
D)Numerousprofessionaldriverswouldhavetofindnewwaysofearningaliving.
54.Whatistheresultoftheintroductionofnewtechnologiesinenergyindustries
A)Politicaldissatisfaction.C)Fossilfuelconservation.
B)Retrainingofemployees.D)Businessrestructuring.
55.Whatdoestheauthorsuggestbusinessesandthegovernmentdo
A)Keeppacewithtechnologicaldevelopments.
B)Makenewtechnologiesaffordabletoeveryone.
C)Enableeveryonetobenefitfromnewtechnologies.
D)Popularizetheuseofnewtechnologiesanddevices.
四级阅读真题参考答案：
51.B
52.A
53.D
54.A
55.C
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