traffic jam As the develpment of econimic ,more and more vehicles appears on the road ,which leads to serious traffic jam .the reason why traffic jam happen is complicated .for one hand ,as more and more people get richer ,too many cars show up on the road .for the other hand ,even thought the government attribute tons of money to civil infrastructure,there doesn't exist enough roads on which allow all car to run .however ,the situation is not incurable .at first ,the government should take measures to limit some private cars .second ,widening road is a effective way to sovle the problem .with everyone's effort,traffic jam will disappear gradually .本人英语六级已过,绝对人工写作!不容易,