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.
注意除了not verb...but verb...之外,are...but are...也是一种平行,即not在平行之外.
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.
(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
(C) because they enhance reproduction or survival, but
(D) because they enhance reproduction or survival, but are
(E) because of enhancing reproduction or survival, but are
key:D … many biological traits are not the products…, but are simply random…
为什么是are not...but are...平行啊,怎么看我都觉得应该是are not....but...是not 和but的平行啊,but后面不应该加are啊
如果按照 答案写的,那么 我再举个例子, are not caused by but caused by 就应该写成 are not caused by but are caused by了,不就啰嗦了嘛??
there are two ways of reading the sentence if choice c is inserted. here they are, with the boldface in each indicating exactly what is construed as a modifier:
1) Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection, (favored because they enhance reproduction or survival),but simply random by-products of other evolutionary developments. --> this is the most obvious reading
2) Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection,( favored because they enhance reproduction or survival, but simply random by-products of other evolutionary developments) ---> counterintuitive if you know anything about evolutionary biology, but grammatically ok -- and therefore a competing interpretation, which is fatal to clarity.
Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection,( favored because they enhance reproduction or survival, but (they) are simply random by-products of other evolutionary developments)
我一开始觉得,如果句子是but are,也一样可以写成上面这样。但其实是不可以的,如果要让but和favored那句联系在一起,需要去掉comma:
favored because they enhance reproduction or survival but (they) are simply random by-products of other evolutionary developments
按这个逻辑,d的答案去掉插入语后,可以认为是这样的
Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection but (many biological traits) are simply random by-products of other evolutionary developments