九乡新闻网西安婚庆公司排行:英语作文2
来源：百度文库 编辑：九乡新闻网 时间：2024/05/06 05:41:48
China has the largest number of bicycles. Bicycles are still popular all over the world because of their outstanding advantages. It's convenient to go to school or go to work by bike. It can help people keep healthy to ride often. However, with the development of economy, more and more people buy cars. The exhaust gas from cars pollutes the air. More and more cars have brought heavy traffic problems. I prefer riding bicycles because it is cheap and keeps the air clean.