1. (2019·孝感) 听材料, 回答问题.

1. （1） What are they talking about?

   A . Environmental protection. B . Heavy traffic. C . Food safety.
3. （2） Why is it a good way to ride a bike?

   A . Became it's convenient. B . Because it's good for health.   C . Because it's relaxing.
5. （3） How many ways are mentioned?

   A . Two. B . Three. C . Four.