19. 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.
(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
对C答案为什么错、E答案为什么对，tianwan和隐携的解释我怎么看不太明白呢？请高手指教！！！
tianwan的解释：
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。
隐携的解释：
白勇上的解释，说as可以偶尔作代词指代简单主语。这里是“就像当。。的时候”的意思。|
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发表于 2005-6-16 11:12:00
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