885-sec12-12

12.         Although all the proceedings of the Communist party conference held in Moscow were not carried live, Soviet audiences have seen a great deal of coverage.

(A) all the proceedings of the Communist party conference held in Moscow were not carried live

(B) all the Communist party conference’s Moscow proceedings were not carried live

(C) all the Communist party conference Moscow proceedings have not been carried alive

(D) not all the Communist party conference Moscow proceedings have been carried alive（E）


(E) not all the proceedings of the Communist party conference held in Moscow were carried live


这道题大部分解释是部分否定和完全否定的差别，不过我不太明白为什么逗号前后时态不一致呢？好像没有什么明显标志。