11. The headmaster warned him to _____ his ways if he wanted to stay at the school.

　　A. repair B. restore C. mend D. protect

　　12. Mobile telecommunications _____ is expected to double in Shanghai this year as a result of a contract signed between the two companies.

　　A. potential B. possession C. impact D. capacity

　　13. Since our knowledge is _____, none of us can exclude the possibility of being wrong.

　　A. delicate B. restrained C. controlled D. finite

　　14. The population will be increasing very fast unless they _____ with new methods

　　to deal with it.

　　A. come to B. come away C. come over D. come up

　　15. We are willing to allow you _____ at 10% calculated on gross profits.

　　A. commodity B. consignment C. conveyance D. commission

　　16. I don’t like football, but some people are _____ about it, which is beyond my comprehension.

　　A. fond B. anxious C. crazy D. curious

　　17. You still need some substantial examples _____ support of your argument, or few people will believe in your idea.

　　A. on B. in C. for D. to

　　18. You would be_____ a risk to let your child go to school by himself.

　　A. omitting B. attaching C. affording D. running

　　19. Liquids such as water and oil take up space and they are measured in units of liquid _____.

　　A. vessel B. barrel C. tank D. volume

　　20. As a _____ president, his views are treated with respect when he is interviewed.

　　A. prior B. previous C. late D. former

答 案
1-5 DCCDB 6-10 BCACD 11-15 CDDDD 16-20 CBDDD