3. 你知道什么是原子吗？

2. 我们去帮助李大妈打扫屋子吧。

1. 中国人民是勤劳的人民。

A library is a place where books are kept for reading. It may be quite small or it may be(1), like the Beijing Library in China. (2)has millions of books.

Today more and (3) towns have public libraries where books can be(4). In some of the communes, like the Red Star People's Commune, libraries can (5) be found.

You may be lucky (6) to have a class library. If so, your teacher will tell you how (7)use it. (8)sure that you do.

A person (9)does not read books is losing a deal.

20. Let's stop by the 　　　on the way home.

A. books store　　　　　　 B. book's store

C. bookstore　　　　　　　 D. store of books

19. I'm going to have my radio　　 .

A. fixed　 B. to fix　　　 C. fix　　　　 D. fixing

18. As he had on pen , he used a pencil　　 .

A. too　　 B. also　　　　 C. instead of D. instead

17. They'll leave a week　　 today.

A. fromq　 B. on　　　　　 C. by　　　　 D. for

16. I had to tell the truth, 　　　.

A. haven't I　　　　　　　 B. wouldn'tI

C. didn't I　　　　　　　 D. shouldn't I