don't just believe the advertisement .that kind of camera is ___they say.

问题描述:

don't just believe the advertisement .that kind of camera is ___they say.
A.as good asB.not as good as C.as well as D.having learned

选b,我不相信那个广告,这种照相机没有他们说的那么好,as...as..和.一样,这里需要用形容词,所以用good不用well