1998年专四作文真题:One way to solve the problem

文中能较灵活地使用学术词汇，但文章中拼写错误较多；句式变化较为明显，可适当增加从句的使用；文章采用了适当的过渡词和衔接词，结构比较严谨。

We all know that vehicles are the major source of air pollution in cities. To solve the headache, people have taken a variety of steps, but the result is not satisfying. Here, one way to solve the problem is to set gas thrifter in the vehicle. Setting gas thrifter in vehicle not only decreases the consumption of gas which is a major source of air pollution but also slows down the cost of possessing a vehicle which makes millaye price lower. Thereby, all vehicles set gas thrifter will make air have a lower carbon dioxide content deriving from burning gas and coal. The less carbon dioxide, the less air pollution. Therefore, through setting gas thrifter, vehicles will bum lower gases, and the problem will partly be solved. Despite other ways to solve the problem, I think the best way is to set gas thrifter in vehicle for both effect and practice.