求助2题PREP中的题目 - ChaseDream

Evolutionary psychology holds that the human mind is not a "blank slate," but instead that it comprises specialized mental mechanisms that were developed as a way of solving specific problems human ancestors faced millions of years ago.

(A) the human mind is not a "blank slate," but instead that it comprises specialized mental mechanisms that were developed as a way of solving

(B) the human mind is not a "blank slate" but instead comprises specialized mental mechanisms that were developed to solve

(C) the human mind, instead of a "blank slate," it comprises specialized mental mechanisms that have been developed to solve

(D) rather than it being a "blank slate," the human mind comprises specialized mental mechanisms that have been developed as a way of solving

(E) rather than the human mind's being a "blank slate," that it comprises specialized mental mechanisms that were developed as a way of solving

这里not but是形式不平行的，但是怎么看出是结构平行，什么叫结构平行呢？

Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection, favored due to their enhancement of reproduction or survival, but that they are simply random by-products of other evolutionary developments.

Prep上说这里的Cbut会有歧义，可是这个很形式平行啊。。not+名词，but+名词

就比如说not by...but by形式很对称的。为什么要加Are。感觉加了are不平行了。

以下是引用yankevi在2007-12-2 11:18:00的发言：

看过解释了，可是还是不怎么清楚啊～

73. (28457-!-item-!-188;#058&003634)

(A) the human mind is not a "blank slate," but instead that it comprises specialized mental mechanisms that were developed as a way of solving

(B) the human mind is not a "blank slate" but instead comprises specialized mental mechanisms that were developed to solve

(C) the human mind, instead of a "blank slate," it comprises specialized mental mechanisms that have been developed to solve

(D) rather than it being a "blank slate," the human mind comprises specialized mental mechanisms that have been developed as a way of solving

(E) rather than the human mind's being a "blank slate," that it comprises specialized mental mechanisms that were developed as a way of solving

这里not but是形式不平行的，但是怎么看出是结构平行，什么叫结构平行呢？

这里理解成,并列句-----并列句主语相同,应该省略重复的主语, 这样MM就好理解了.

或者理解为应该是主语the human mind 后跟两个并列谓语is 和 comprises , but 在这里连词

74. (28503-!-item-!-188;#058&003635)

(A) due to their enhancement of reproduction or survival, but that they are

(B) due to the reproduction or survival they enhance, but they are

(D) because they enhance reproduction or survival, but are

(E) because of enhancing reproduction or survival, but are

Prep上说这里的Cbut会有歧义，可是这个很形式平行啊。。not+名词，but+名词

就比如说not by...but by形式很对称的。为什么要加Are。感觉加了are不平行了。

请指教。。

MM平行不能光看结构的, GMAT很多平行还会用结构上的平行来迷惑我们. 这里BUT在内容上, 是要和宾语从句里的谓语

are 和平行的, C会造成歧义. reproduction or survival, but XXX 是在一起的结构.