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1、Unit9Wheels阅读理解ARecentmonthshaveseenarevivalofthehumble(普通的)bikeacrossChina,withanincreasingnumberofpeoplechoosingpedaling(骑车)insteadofdrivingtoschool,toworkplacesortodosightseeing.Theintroductionofbike-sharingsystems,servicesinwhichbicyclesaremadeavailableforsharedusetoindivi
2、dualswhodonotownthemandpioneeredbystart-upslikeOfoandMobike,hasbroughtthetrendtoanewlevel.WashingtonD.C.hasoneofthebiggestbikesharingsystemsintheUSwith3,700bikesand440stations.TheUK,FranceandGermanyallhavegrowingprograms.However,China,sofar,outdoes(超过)themallbyoperatingthreeou
3、toffouroftheworld’sshardbikes.Peoplecanunlocktheshardbikesbysimplyusingtheirsmartphone.ThebikesareequippedwithGPSandusersofChina’sversionscanleavebikesanywhereinpublicforthenextuser.They’repopularamongmanyChinesepeopleastheyprovideaneffectivesolutiontothe“lastmile”problem,whic
4、hreferstothefinallegofaperson’sjourney.However,theChineseprogramshavealsoledtoproblemssuchasillegalparking,vandalism(故意破坏)andtheft.Infact,theseproblemsarealsosharedbybike-sharingprogramsabroad.Launchedin2007,Véilbisalarge-scalepublicbikesharingsysteminParis.Atitsearlystageofop
5、eration,italsosufferedfromproblemsofvandalismortheft.ByOct2009,alargenumberofVélib’sinitialbikeshadtobereplacedduetovandalismortheft,accordingtoTheNewYorkTimes.Todealwiththeseproblems,thepanycameupwiththeideaofencouragingpeopletoreturnthebikestostationsbyrewardingfreetimeforth
6、eirnextrides.Now,Chineseserviceoperatorsarealsotryingtoaddresstheseproblems.Forexample,Mobikesetsa100-pointcreditscoreforeachuser,withpointstakeninthecaseofbadbehavior.Onceascoredropsbelow80,bikerentalisincreasedto100yuanper30minutes,upfrom0.5-1yuan.1.Whatcanwelearnaboutbikesh
7、aringsystems?A.Theyofferfreebikerides.B.Theyarerunningperfectly.C.Chinaoperatesthebiggestsystem.D.Francewasthefirsttolaunchthesystem.2.Asameansoftransportation,bike-sharingcanbebestdescribedas_______.A.promisingbutexpensive.B.convenientandeco-friendly.C.eco-friendlybutineffect
8、ive.D.troublesomeandmeaningless.3.Whatcanbeasuitabletitlefort
