6. A. but B. and C. so D. or

5. A. bought B. found C. read D. took

4. A. surprised at B. not surprised at

C. interested in D. not interested in

3. A. what B. which C. where D. when

2. A. shouldn't B. needn't C. mustn't D. can't

1. A. good B. bad C. cheap D. expensive

10.C. so…that… 是一个固定句式。

　(4)

　Time spent in a bookshop can be enjoyable. If you go to a (1)______ shop, no assistant will come near to you and say, “can I help you?” You (2)_____ buy anything you don't want. You may try to find out (3)_____ the book you want is. But if you fail, the assistant will lead you there and then he will go away. It seems that he is (4)______ selling any book at all.

　There is a story which tells us about a good shop. A medical student (5)_____ a very useful book in the shop, (6)_____ it was too expensive for him to buy. He couldn't get it from the library, either. So every afternoon, he went there to read (7)______ at a time. One day, however, he couldn't find (8)______ from its usual place and was leaving when he saw an assistant signing to him. To his surprise, the assistant pointed to the book (9)______, “I put it there so as not to be sold out,” said the assistant. Then he (10)______ the student to go on with his reading.

9.B. 世界上最高的山脉和最深的海沟之间就相差两千米。

8.D. 世界上最高的山脉大约9,000米高，这就是我国的喜马拉雅山。

7.A. 这里所说的一部分海洋较浅，这是一个事实。并且这句话的主语是parts，所以连系动词be应用复数。