11. A. but B. further C. still D. only

12. A. confined B. dedicated C. corresponded D. exposed

13. A. in turn B. in exchange C. in vain D. in debt

14. A. occasionally B. intentionally C. typically D. steadily

15. A. insists on B. consists of C. persists in D. resists to

16. A. living B. lively C. alive D. life

17. A. incidences B. decisions C. accidents D. expedition

18. A. on B. for C. by D. in

19. A. counterpart B. opposite C. competitor D. opponent

20. A. station B. status C. stature D. state

参考答案：

1.B 2.C 3.D 4.A 5.C 6.B 7.D 8.C 9.B 10.A

11.C 12.B 13.A 14.C 15.B 16.C 17.B 18.A 19.B 20.B