Can a computer（计算机）think? The answer is ___1___ yes nor no. It depends on what is meant by thinking.

　　A computer can work much ___2___ and faster than any human（人类）head. But on the other ___3___, the human head can do ___4___. It can put thoughts together in ___5___ ways and can think of new ideas. Such ___6___ ideas may have never been thought of before.

　　___7___ example, shortly after the radio was ___8___, ___9___ began to think of sending ___10___ by wireless（无线电）. Through many ___11___ of hard research work, a scientist invented（发明）the ___12___ TV set in the world. Another example is ___13___ the computer itself was ___14___ invented by humans. So a computer can't ___15___ the place of human head. It can only“think”as man wants it to.

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

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.