阅读理解，选出正确答案并将序号填入题前括号里。
Tom is an American boy. He's 11. His friend is Mike. He's ten. He is a student. Tom has a bag. It's nice and
big. There are some books in it. Mike has a small bag, but he doesn't like it. He wants to buy a new one. They
are going to a supermarket, then they are going to a bookstore. There are some books about China. Tom likes
the books about Chinese food and Mike likes Chinese history (历史). They are going home at 6: 30.
1. Tom is ____________ years old.[ ]
A. nine
B. ten
C. eleven
2. ____________ bag is small.[ ]
A. Tom's
B. Mike's
C. Tom and Mike's
3. Mike wants to buy ____________.[ ]
A. a pen
B. a jacket
C. a new bag
4. There are some books about ____________ in the bookstore.[ ]
A. China
B. America
C. England
5. They are going home at ____________.[ ]
A. 5: 30
B. 6: 00
C. 6: 30
这公式对任何静电场都成立