求前辈解释OG语法分册的一道题！

elginlv

（题号24）In recent years cattle breeders have increasingly used crossbreeding, in part that their steers should 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

正确答案：E。我已明白"to acquire“在这里表示要达到一个goal，但是我感觉D也有同样的意思。求D与E有何不同。

kimfeng

D首先是个被动语态，主动优于被动。其次D的表达是很啰嗦的。
我觉得是这样。再看看有没有更好的解释吧。。。

Buttons

同问，感觉D选项还有because的平行啊。。。比E好一点

Buttons

这道题，非常突出了GMAT考试的语义的理解，D句意是：部分是因为有些characteristics应该被steers得到。而E是：部分是（人）为了获得steers的某种characteristics.——很明显，其实不是牛要获得某种特征，是人要获益于牛的某种特征。
而且，根据平行句的主被动优选，D为被动，E为主动，未划线的and partly because crossbreeding （is said to） provide hybrid vigor实则为主动句，E一定是优选答案。