词汇测验:

1. limpid

2. oscillate

3. prosaic

4. demarcation

5. audible

6. constrain

7. conundrum

8. innate

9. concomitant

10. abstruse

11. divisive

12. caustic

13. sovereign

14. emaciated

15. blemish

16. soluble

17. cumulative

18. novice

19. emote

20. arid

剩余时间： 200 秒