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
平行 结构 句子中有两个原因，两个原因应该平行，用partly。To acquire 简洁准确的表达了crossbreeding的目的。 A 两个原因用partly平行连接。 To do 表目的。 B 同A C 改变了原意，because of 意指crossbreeding出现的原因是the steers have already acquired certain characteristics，但是其实这个是目的。 D 被动不如主动好。 E 正确。 D 选项是一个混淆选项，觉得partly because是平行。可是仔细比较D 和 E。D是用被动表达的，E是用主动表达的，主动优于被动。
我本来选的D，答案是E，以上是看了解析后自己的笔记。可是忽然想到E有一个问题。
E 选项中是一个介宾短语和一个句子的并列，partly to acquire certain characteristics in their steers and partly because crossbreeding is said to provide hybrid vigor. to do....and because....
可是我记得只有介宾和介宾并列，句子和句子并列，介宾怎么能和句子并列呢？
哪位牛牛能来解释下啊？？？
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发表于 2013-4-19 12:07:49
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