最近很多大城市都投放了共享单车(sharedbikes)，比如摩拜单车(Mobike)、Ofo共享单车等。由于它们方便停放，骑车也能起到锻炼身体的作用，作为代步工具很受大家欢迎。但是，各地也出现了很多毁车现象，比如刮掉车上的二维码(QRcode)、上私锁等。
你对这种现象怎么看?你对共享单车公司有什么建议吗?写一篇符合逻辑的英语短文，80词左右。
参考词汇：bike-sharingcompanies共享单车公司，Mobike和Ofo是两家共享单车公司，convenience方便，register登记
参考范文
ThesharedbikeslikeMobikeandOfobringgreatconveniencetopeople.Youneedntlockthembysimplyusingyoursmartphone.Theycantakeyouwherethesubwayandbusdontgo.Andtheycanbeleftanywhereinpublicforthenextuser.
However,badthingshappen.SomepeopledamagetheQRcodeonthebike,orusetheirownlock,whichcausestroubletootherusers.
Inmyopinion,itsdifficulttoturnthesepeoplesideasinashorttime.Therefore,bike-sharingcompanieslikeMobikeandOfoneedtodosomething.Forexample,thosewhodamagethebikeshouldpayfortheiractions.Also,becausepeopleusetheirrealnametoregisterasauser,itsagoodwaytoconnecttoonespersonalcredit.
Intheend,whatIwanttosayistotakegoodcareofpublicservices.
共享单车(bicyclesharing)已成为时下最热的话题之一，请你就这一话题写一篇短文。内容须包括三方面：1.共享单车蓬勃发展，成为社会热潮;2.共享单车带来便利，但也存在问题;3.我对解决问题的建议。
参考范文
BicycleSharing
Withthedevelopmentoftechnology,bicyclesharingcomesintopeople'slives.Itbecomesmoreandmorepopularandmuchnewsreportedit.Atthesametime,weshouldseethattherearesomeproblemscausedbybicyclesharing.
Ononeside,bicyclesharingmakesitveryconvenientofpeopletraveling.Youcanfindabicycleanywhereatanytimewhenyouwanttogooutforacycling,andthepriceofonetripisverylow.Itcansavetimeforpeople.Ontheotherside,itsmanagementisnotperfect.Evenkidscanopenthelockandridethebicycle,thereisnodoubtthatsuchbehaviorisverydangerous.What'smore,manypeopledeliberatelybreakit,likethrowittotheriverordestroythecodeaboveit.
Inmyopinion,weshouldtakeadevelopingviewaboutbicyclesharing.Itisobviouslyhelpfultohumanbeingsasahigh-techproduct.Thegovernmentshouldintroducerelevantprovisionstoregulatethismarkettoavoiditsdisadvantages.
高阶范文(较难)
MyViewsonBicycle-sharing
Presently,inbigcitieslikeShanghaiandGuangzhou,bicycle-sharingsystemhasbecomeincreasinglypopular.Alargenumberofsharedbikescanbefoundandrentedatalowprice.Moreover,youcanparkthebikealmostanywhereyoulike.Urbantransportationhasthusbeenmademuchmoreconvenientandevenrevolutionized.
However,alongwithitsrapiddevelopment,bicycle-sharingsystemalsobringssomeproblems,includingrandomparking,vandalismandpossessionofsharedbikes,etc.
Tosolvetheseproblems,therearesomemeasuresfortheauthoritiestotake.Firstly,thegovernmentcouldimplementmorestrictlawsandrulestoregulatetheoperationandmanagementofbicycle-sharingsystem.Secondly,thepublicshouldraisetheirawarenessofusingsharedbikereasonably.Lastly,urbantransportationsystemshouldbeupgradedandimprovedtoaccommodateautomobiles,bikesandpedestrians.
Toconclude,asensibleattitudeshouldbeheldtowardbicycle-sharingprogram.Witheffectiveandefficientmeasurestaken,andeffortsmadebythoseinvolved,itcanbeexpectedthatbicycle-sharingsystemwillplayacontributiveandconstructiveroleinurbanpublictransportation.
假定你是红星中学初三学生李华。你的美国朋友Jim在给你的邮件中提到他对中国新近出现的一种共享单车mobike很感兴趣，并请你做个简要介绍。请你给Jim回信，内容包括：
1.这种单车的使用方法(如：APP查看车辆、扫码开锁等);
2.这种单车的优势;
3.你对这种单车的看法。
注意：1.词数不少于80;
2.开头和结尾已给出，不计入总词数。
提示词：智能手机smartphone,二维码theQRcode
参考范文
DearJim,
Imwritingtotellyoumoreaboutthenewformofsharingbikemobikementionedinyourlatestletter.
Itsveryconvenienttouseifyouhaveasmartphone.WhatyoudoistofindanearestmobikethroughtheAPP,scantheQRcodeonthebike,andenjoyyourtrip.
Comparedtootherformsofsharingbike,thegreatestadvantageofmobikeisthatyoucaneasilyfindoneandneverworryaboutwheretoparkit.Itisbecominganewtrendasameansoftransportation,whichrelievesthetrafficpressureanddoesgoodtotheenvironmentaswell.
HopetorideamobikewithyouinChina.
Yours,
LiHua