【正确答案】
【答案解析】[参考范文]
{{B}}Mass Transit System Is a Better Choice{{/B}}
The problem of traffic jams in big cities in China has always been a headache. As to how to solve this problem, people maintain different opinions. Some suggest that we give priority to the development of private ears, others argue that mass transit systems should be put in the first place. I am for the latter solution.
Firstly, well-established mass transit systems are far more efficient and economical than private ears. Let's take bus for example. One ear holds at most five people but one bus can hold 40 to 50—eight to ten times as many as a ear. To move the same number of people from one place to another, we need much more vehicles if we use private ears. The more vehicles on the roads, the more chances for traffic jams to happen.
Secondly, land is rare in cities and parking places for private ears occupy much more land than buses do. In order to provide enough parking lots for private ears, municipal governments have to cut the budget for roads. It is obvious that with less private ears we can certainly have more money and land to build better and wider roads to reduce traffic jams.
Finally, many traffic jams are caused by traffic accidents. With more vehicles in big cities, the probability for accidents is higher and hence more traffic jams. Mass transit reduces private cars and hence there are less vehicles. The result is obvious: less traffic accidents, less traffic jams.
Therefore, my conclusion is: to solve the problem of traffic jams in big cities in China, mass transit systems are a better choice.