题干
写作
我国拥有大量的自行车。但随着经济（economy）的发展，越来越多的家庭购买了汽车。请写一篇英语短文，阐述自行车和汽车各自的优缺点，并谈谈自己的看法。词数：100左右。
参考词汇：outstanding，advantages，convenient，traffic，healthy，exhaust gas （废气），pollute
答案(点此获取答案解析）
China has a lot of bicycles.Bicycles are still popular all over the world because of their outstanding advantages. It's convenient to go to school or to go to work by bike. It can help people to keep healthy. And the most important thing is that it is goo
