新版英语自考二讲义重点7

III.部分练习讲解P305BridgingtheGapDirections:Fillintheblankswithawordoraphrasethatbestcompletesthepassage.Youmaychooseasuitableonefromthelistgiven.解题方法：把词分类　动词　　　　　　形容词　　　代词/限定词comparedto　　　low　　　　　anotherrequire　　　　　personalrunningoutof　economicrefersto　　　　　positive　　　　　　　　　limitedOftenreferredtoasgreentransport,sustainabletransportationisthewayofthefuture.Transportpoweredbygasandpetrolisrunningona1limitedtimeframe（时间范围，期限）,asboththesesourcesareunsustainableinthelongrun.Incontrast,sustainabletransportationoffersanoptiontoaworldrapidly2runningoutofrenewable（可再生的）fuelsources.It3referstoanykindoftransportthathasalowimpactontheenvironment,suchaswalking,cycling,masstransit,greenvehicles,andcarpooling（集体用车，拼车）,amongstothers.Anymodeoftransportisdeemedsustainableifithasa4lowenvironmentalimpactanduseslittleornofuel.Walkingisthebestexampleofsustainabletransportation,asitdoesnot5requireanygas.However,walkingcanbeimpracticalifyouaretravellinglongerdistances.Cyclingis6anothergreentransportoptionandisafarmorepracticaloptionforlongercommutes.Usingpublictransportation,suchasbusesortrains,isalsomoresustainable7comparedtoprivatevehicles.Theamountoffuelusedtotransportabusfullofpeopleismoreeffectivecomparedtoasinglepersondrivinga8personalcar.Asustainabletransportsystemhasa9positiveimpactontheenvironment,andhelpstopromotesocialand10economicsustainability（可持续性）inthecommunitiesitserves.Increasedmobilityusuallyresultsinbettersocio-economicconditions: