参考答案：One possible version

Reading Makes a Full Man

Now, public bikes are provided for people in many cities in China. I think a it's good thing. To live a low—carbon life, we should call on people to ride bikes instead of driving cars. First, bikes are much more convenient than cars and everyone can rent and return them. Second, as we know, there's usually a heavy traffic when we are on the way to school or work. If fewer people ride bikes then there are fewer cars on the road, and there won't be too crowded. Third, it's the most important that riding bikes won't produce the dirty air to make pollution to our environment. Let's ride bikes instead of driving cars to protect the environment! And I hope more and more people can ride bikes and live a low—carbon life.