Compared with cars, bicycles are superior in many ways. First, they are cheap, convenient and easy to ride. Second, riding bicycle is good for health. Third, they bring no noise nor air pollution. Though cars are faster and more comfortable, they are too expensive. They consume plenty of oil and they pollute the air. Sometimes, it is difficult for a driver to park his car. Moreover they often cause traffic jams and accidents.
注：1. Compared with cars 分词结构开头。
        2. be superior to/ be inferior to 优于/ 低于
        3. thirst, second, third 英语语言有层次感，信号词
        4. cheap 便宜，最好用inexpensive
        5. be good for health 对健康有好处（万能理由）
        6. Moreover 表示递进
In my opinion, the future of bicycle is very promising. Since China is a developing country and has a large population, I think, riding bicycle is appropriate to Chinese present conditions. It will be an important means of transportation for quite a long time.
注：promising 有前途的 a promising young man
Score: 11
   There millions of bicycles in today’s China. Bicycles are very important means of transport in people’s daily lives. Because to ride a bicycle is very simple, to buy a bicycle will not cost so much money, to park a bicycle needs just a small room and to ride a bicycle does not need oil but the rider’s strength, bicycles are popular all over the world, especially in China.
注：第一句应该用there be结构
Compared with a car, a bicycle is much cheaper. It is more suitable for China as a developing country. And a bicycle has almost caused no pollution but a car has. On the contrary, a bicycle is too slow, it costs