A. They have good experience.

B. They are experts in the field.

C. They are knowledgeable but proud.

听第8段材料，回答第11至13题。

11. What are the speakers mainly talking about?

A. Buying books for their course.

B. The money needed for the books.

C. Sharing the books with each other.

12. Why does Dr. Downs want his students to have these five books?

A. These books are not expensive.

B. He wants his students to read more.

C. He wants to discuss them in detail.

13. How does the woman plan to solve the problems about the books?

A. She buys three and the man buys two.

B. She pays the man fifty dollars for sharing.

C. They will share the total amount for the books.

听第9段材料，回答第14至16题。

14. What subjects does the woman like to apply for next year?

A. Economics. B. Engineering. C. Science.

15. What’s the purpose of the woman talking with the man?

A. For a good record of her studies this year.

B. For a recommendation of him.

C. To get some advice about the recommendation.

16. What do the woman’s parents think of her idea?

A. They think it is a good idea.

B. They think it is a bad idea.

C. They think it has nothing to do with them.

听第10段材料，回答第17至20题。

17. How many people took part in the swimming activity?

A. About 300. B. About 3000. C. About 30,000.

18. Who organized the swimming activity?

A. Local Authority. B. The Tourism Agency. C. The Sports Center.

19. Why did they organize the swimming activity?

A. To make people more aware of environmental protection.

B. To get ready for a swimming competition.

C. To celebrate the Dragon-boat Festival.

20. What can we know from the 62-year-old swimmer?

A. the river isn’t as clean as it was several years ago.

B. the river was very clean when he was a child.

C. he often goes swimming in the river.