大全 83质疑 紧急状态 先谢！

1.        Although it claims to delve into political issues, television can be superficial such as when each of the three major networks
                        broadcast
                    exactly the same statement from a political candidate.决定主语是复数A，D错

(A) superficial such as when each of the three major networks

(B) superficial, as can sometimes occur if all of the three major networks

(C) superficial if the three major networks all

(D) superficial whenever each of the three major networks（E）

(E) superficial, as when the three major networks each

解释中说as 在此是连词

我强烈记得og 里对一个错选曾分析道after when 是错的，因为引导一个从句不能出现两个连词 

C我觉得很好

1.        Although it claims to delve into political issues, television can be superficial such as when each of the three major networks
                        broadcast
                    exactly the same statement from a political candidate.决定主语是复数A，D错

(A) superficial such as when each of the three major networks

(B) superficial, as can sometimes occur if all of the three major networks

(C) superficial if the three major networks all

(D) superficial whenever each of the three major networks

(E) superficial, as when the three major networks each

我选E，as when 绝对可以引导从句，肯定有这一说。

E中的主谓搭配也正确，复数主语networks 和谓语broadcast 搭配正合适。

答案是什么？

key: E

why?

As when, as where都是正确的表达，as无实意。

如果if A then B，那么它的逆否命题 not B 推 not A是对的，可是否命题 not A 推 not B不一定对。
我不明白的是，为什么我们在理解的时候非要从否命题的角度来判断呢？C也没有要求否命题就必须对呀？

其实这道题不用想得太复杂，这么说吧：不管三家电视公司是不是都同时播出一个政论，其实都不会影响“电视是肤浅的”这一观点的。（用IF A，B表示在A这种情况下必然出现结果B，IF NOT A是不是必然出现结果B呢，我们是不知道的，有可能B，有可能不是B，TIANWAN的解释我想也是这个意思吧：）

C的if条件句不是举例。条件句改变了意思，表明if （not）the three major networks all时，television may （not）be superficial 。
逻辑上这样反推是错的，不过因为不是必然情况，有这个可能。