阅读理解。

     One day, a little boy comes into a shop and says to the shop assistant, "I want to buy twelve exercise

books of 6 cents each and nine pencils of 10 cents each. How much is that altogether (总共)?"

     The shop assistant writes these numbers down on a piece of paper and thinks for a minute. Then she says.

"I dollars 62 cents.""If I give you ten dollars. How much money will I get back?""You will get 8 dollars 38

cents for change. Here you are. These are the things you want."

     "No. thank you, I don't want to buy anything."The boy looks at the piece of paper and says politely," This

is my math homework. Thank you very much. Can I take it away?''

1. The story happens ________.

A. in a shop

B. at a mall

C. in a supermarket

D. at school

2. The little boy comes to the shop for ________.

A. nine pencils

B. some books

C. nothing

D. his homework

3. The little boy is ________.

A. bad

B. naughty but clever

C. stupid (愚蠢)

D. hard-working

4. At last the shop assistant must be ________.

A. excited

B. happy

C. angry

D. surprised

5. The word "change" in the second passage means ________.

A. 零钱

B. 交换

C. 改变

D. 金钱