精选优质文档-倾情为你奉上汽车：The set of pictures present a distinguishable contrast of the role of the automobile over time: a century ago, people celebrated the invention of such rapid equipment for transportation, which could take us to wherever we want. Yet now, particularly in urban areas, the automobile is more of a trouble as its abundance results in frequent traffic jams. Drivers in the second picture even fall asleep when trapped in this “disaster”. Traffic jams have long been a problem th
