题目内容：

There are many ways for us to reduce(减少) waste. For   16  , we can reduce paper and plastic bags. We can also recycle newspapers, glass, and cans(易拉罐) to make new things. Here are some useful ways to   17   waste.

Write on   18   sides of paper

Many people write on only one side of their paper. Why not stop wasting the other side? Some students only use half the pages of their   19   before getting new ones. Try to use up all the paper. People often give cards on birthdays or festivals. How about trying to   20   e-cards instead?

Don't throw away your old batteries.

Maybe you do not know that old batteries make the earth   21  . This is because they have poisonous parts in them. So, don't throw away batteries.   22   them together. Try to use rechargeable(充电的) batteries for your games and CD players.

Give off all your unwanted clothes

There are many poor families in China. You may ask your mother to   23   your unwanted clothes. Then you can pass them on to those poor children. You will feel

  24   that you are helping someone else. Also, you can understand   25   your friends or relatives(亲戚) want them before throwing them away.

1.A. reason            B. example         C. use             D. people

2.A. produce           B. protect         C. reduce          D. pollute

3.A. every             B. both            C. all             D. one

4. A. exercises        B. schoolbags      C. notebooks       D. papers

5.A. send              B. buy             C. receive         D. waste

6.A. dry               B. rich            C. clean           D. dirty

7.A. Throw             B. Keep            C. Try             D. Lose

8.A. like              B. sell            C. throw           D. collect

9.A. angry             B. tired           C. moved           D. happy

10.A. that B. if   C. though   D. what