9)    A charge        B price            C cost         D value

10)   A accept        B gain             C receive      D absorb

11)   A frequently     B incidentally       C deliberately D eventually

12)   A soon         B quickly           C immediately D first

13)   A some        B others             C several      D few

14)   A might       B should             C would       D will

15)   A adopting     B conducting         C receiving     D adjusting

16)   A to           B at                C on           D about

17)   A opaque       B secret            C sealed         D hidden

18)   A tackle        B learn             C study         D manipulate

19)   A in           B through           C with          D under

20)   A except       B nor               C or            D but

参考答案：

1--5 CBADB
6--10BBDCC
11--15ADABA
16--20ADCCD