1. The hero of the story is an artist in his________.

　　　 A. thirtieth　　B. thirty　　C. thirty　D. thirties

　[解析]在某人30多岁的时候，用基数词的复数形式表示。　　 答案: D

10. The problem is_______(whether, if) more countries can use natural energy in future.

　答案: whether

9. Who fetched the cheque from the bank is _______ (what, that) I want to know .

　答案: what

8. The most important thing for them is ______(whether, that) they should first improve their spoken English.答案: whether

7. It's believed ______(which, that) the team have already crossed the river.答案: that

6. There is no life on the moon,______(which, that) is known to all.答案: which

5. The prisoners have to eat ______(whatever, whichever) they are given.答案: whatever

4. The news ______(that, which) she passed the computer skill test was a great surprise. 　答案: that

3._______(What, That) she was chosen head of the factory made the news.答案: That

2. We must remember the fact ______(which, that) goats usually live in mountainous country.

　答案: that