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1、Unit5Meetingyourancestors李仕才一、阅读理解Recentmonthshaveseenarevivalofthehumble（普通的）bikeacrossChina,withanincreasingnumberofpeoplechoosingpedaling（骑车）insteadofdrivingtoschool,toworkplacesortodosightseeing.Theintroductionofbike-sharingsystems,servicesinwhichbicyclesaremadeavailab
2、leforsharedusetoindividualswhodonotownthemandpioneeredbystart-upslikeOfoandMobike,hasbroughtthetrendtoanewleve1・WashingtonD・C.hasoneofthebiggestbikesharingsystemsintheUSwith3,700bikesand440stations.TheUK,FranceandGermanyallhavegrowingprograms•However,China,sofar,outdoes（超过
3、）themal1byoperatingthreeoutoffouroftheworldsshardbikes・Peoplecanuniocktheshardbikesbysimplyusingtheirsmartphonc.ThebikesareequippedwithGPSandusersofChina"sversionscanleavebikesanywhereinpublicforthenextuser.They"repopularamongmanyChinesepeopleastheyprovideaneffectivesoluti
4、ontotheulastmile”problem,whichreferstothefinal1egofaperson，sjourney.However,theChineseprogramshavealsoledtoproblemssuchasillegalparking,vandalism（故意破坏）andtheft・Infact,theseproblemsarealsosharedbybike-sharingprogramsabroad.Launchedin2007,Veilbisalarge-scalepublicbikesharing
5、systeminParis.Atitsearlystageofoperation,italsosufferedfromproblemsofvandalismortheft.ByOct2009,alargenumberofVOlib'sinitialbikeshadtobereplacedduetovandalismortheft,accordingtoTheNewYorkTimes.Todealwiththeseproblems,thecompanycameupwiththeideaofencouragingpeopletoreturnth
6、ebikestostationsbyrewardingfreetimefortheirnextrides.Now,Chineseserviceoperatorsarealsotryingtoaddresstheseproblems.Forexample,Mobikesetsa100-pointcreditscoreforeachuser,withpointstakeninthecaseofbadbehavior.Onceascoredropsbelow80,bikerentalisincreasedto100yuanper30minutes
7、,upfrom0・5Tyuan.1.Whatcanwelearnaboutbikesharingsystems?A.Theyofferfreebikerides.B.Theyarerunningperfectly.C.Chinaoperatesthebiggestsystem・D.Franeewasthefirsttolaunchthesystem.1.Asameansoftransportation,bike-sharingcanbebestdescribedas.A.promisingbutexpensive.B.convenienta
8、ndeco-friendly-C.eco-friendlybutineffective.D.troublesomeandmeaningless.2.Whatcanbeasuita
