22. In recent years cattle breeders have increasingly used crossbeeding, in part that their steers should acquire certian characterstics and partly because cross breeding is said to provide hybrid vigor.
(A) in part that their steers should acquire certian characterstics (B) in part for the acquistion of certain characterstics in their steers (C) partly because of their steers acquiring certain characterstics (D) partly because certian charactrstics should be acquired by their steers (E) partly to acquire certain characterics in their steers
The sentence gives tow reasons that cattle breeders use crossbreeding; these reasons should be introduced in parrallel ways with the word partly. The infinitive to acquire clear and concisely conveys the purpose of the crossbeeding.
E：In this sentence, the word partly is used to introduce both reasons; the phase to acquire certain characteristic is clear and concise.
新东方老师的解释如下： 前置省略。E 省略了 partly ( because crossbreeding is said ) to acquire certain characteristics in their steers
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发表于 2010-1-4 09:55:55
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