词汇测验:

1. caustic

2. refute

3. incisive

4. expiate

5. ominous

6. defunct

7. boisterous

8. proclivity

9. impregnable

10. aerial

11. conduit

12. vicissitude

13. immutable

14. hapless

15. ignominious

16. compensate

17. hiatus

18. propitious

19. callous

20. ambivalent

剩余时间： 200 秒