请教OG11 Purple SC 22

22.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

answer should "E"

In parallelism,E没有because ,  用 to acquire,是平行吗?

这道题我当时也错了，只能谈下个人理解

用平行剔除了A和B

C因为because of后面要加名词或名词性短语，结果逼着写出了acquiring，这个应该算动名词，就很罗嗦，总之C也不对

我最初选了D，后来总结D的好处是平行得比较完美，但有2个主要问题。

一是用了被动语态（本可以用主动语态，因为主语和宾语都很清楚），二是用了虚拟语气而且还用错了情态动词（本可用would的结果用了should，should本身带有感情色彩）

E除了平行不是很完美外没有语病，而且简洁，可能用partly表明平行足够了

感激感激.解释的好详细.谢谢