20. In 1958 Marian Anderson ________ her country as a United Nations delegate. A. served B. was served C. to serve D. serving ...

15. Tom was once cheated by his friend; ________ he would not trust anyone. A. hence B. since C. nevertheless D. however ...

10. He is not a child __________. A. no more B. no longer C. any much D. any more ...

4. Coal was formed out of dead forests by a long and slow _______ of chemical change. A. press B. procedure C. success D. process ...

9. When Joe gets mad, just let him alone. A. 错误 B. 正确 ...

4. Several of my friends came: Ben, Carol and Mike, for instant. A. 错误 B. 正确 ...

19. We have planned an exciting publicity _____ with our advertisers. A. struggle B. campaign C. battle D. conflict ...

9. We can't afford a car, _____ the fact that we have no garage. A. not mention B. not to mention C. not mention to D. to not mention ...

4. Tom assured his boss that he would _____ all his energies in doing this new job. A. call forth B. call at C. call on D. call off ...

9. I tend to think that members of parliament by and large do a good job. A. 错误 B. 正确 ...