请教一个语法问题,俺是菜鸟,别笑俺.
[size=4]OG里面改错部分的22题，22．In recent years cattle breeders have increasingly used crossbreeding，in part that their steersshould acquire certain characteristics and partly because crossbreeding is said to provide hybrid
vigor.
(A) in part that their steers should acquire certain characteristics
(B) in part for the acquisition of certain characteristics in their steers
(C) partly because of their steers acquiring certain characteristics
(D) partly because certain characteristics should be acquired by their steers
(E) partly to acquire certain characteristics in their steers我一直不懂那个答案E里面为什么是对的，为什么，不跟后边的partly because 保持平行用法呢？如果选择这个，那不是and前后不平行了吗，高手指点阿，万分感激！[/size] and前后都是partly，对称
一个原因，一个结果，怎么能完全用一样的 请看这里的讨论：[url]http://bbs.taisha.org/redirect.php?tid=1085077&goto=newpost[/url] 平行不是那么重要的，不要信那些解释信得那么虔诚。
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