关于保护环境的,主要是写自行车,用上使我们健康,可以省钱等等,80字左右

Cycling（骑车） Pollution is becoming more and more seriouse in the world,and the waste gas produced by the cars is one of the most seriouse kinds of pollution。As students,what should we do to protect our home----the earth?Cycling,I think。Cycling doesn’t produce any waste,and it needn’t use any energy,so it is very good to protrct the environment。Besides,we can also biuld up ourselves by riding a bike。If everyone rides a bike to work or school,I’m sure our world will be more and more beautiful,isn’t it。