题目内容：

请阅读下面材料，根据材料内容，从方框内所给的选项中选出能填入空白处的最佳选项，并将其答案的标号写在方框下面的横线上。

The air pollution problem is something that we all need to be worried about. Luckily, we can all help in our own little ways.

1.Instead of throwing everything away, we should find ways to recycle and reuse it. Check out the recycling centers in your area. 2.You might even make a few dollars from waste things. Get busy and recycle today.

Ride with a friend or walk. 3.Walking or riding can also help you exercise to keep healthy.

Reduce(降低) energy use. There are many small things needing energy to work, for example, electricity. 4.And don’t set the temperature of your conditioner(空调) too low in summer.

Plant trees and keep the tress you have healthy.5.   They do this by producing oxygen(氧气)，providing shade(荫) in summer and stopping cold wind in winter.

Once we work together, we could make a difference. So get stated now.

 

A.    Whenever we get a chance to walk or ride a bicycle, please don’t drive.

B.    Tree  can reduce air pollution.

C.    Sell your waste things in those centers.

D.    Turn off lights when you don’t use it.

E.    Recycling is a great way to help reduce air pollution.