Brian's Chinese is very good ,but his French---------- his Chinese.

问题描述:

Brian's Chinese is very good ,but his French---------- his Chinese.
A.is as good as
B.isn't as well as
C.isn't so good as
D.is as well as

c.因为用了but,所以要转折,选否定的,在B\C中选.最终答案是C