求助prep2-sc 40

Q28.  

According to one expert, the cause of genetic irregularities in many breeds of dog is not so much that dogs are being bred for looks or to meet other narrow criteria as that the breeds have relatively few founding members.

(A) the cause of genetic irregularities in many breeds of dog is not so much that dogs are being bred for looks or to meet other narrow criteria

(B) the cause of genetic irregularities in many breeds of dog is not as much their being bred for looks or meeting other narrow criteria as much

(C) it is not so much the cause of genetic irregularities in many breeds of dog that they are being bred for looks or meeting other narrow criteria as much

(D) it is not so much that the cause of genetic irregularities in many breeds of dog is their being bred for looks or meeting other narrow criteria so much

(E) it is not so much the cause of genetic irregularities in many breeds of dog to be bred for looks or to meet other narrow criteria

CDE的句型为什么不对啊？是罗嗦吗？

答案选A，麻烦解释下。

貌似LZ没有抓到考点，我觉得这道题目考察的是not so much that ... as that，所以答案一目了然，首先排除BCD。E把句子结构打乱了，读上去感觉就是不对的，而且仔细看可以发现not so much的修饰对象也不对了，所以是错的。