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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.

Ain part that their steers should acquire certain characteristics
Bin part for the acquisition of certain characteristics in their steers
Cpartly because of their steers acquiring certain characteristics
Dpartly because certain characteristics should be acquired by their steers
Epartly to acquire certain characteristics in their steers

正确答案: E

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zada2010

电梯直达

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发表于 2012-5-20 18:22:32 | 只看该作者回帖奖励

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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
答案是E 我选了D。。。
这是一道真题。。答案是官方提供的。。但是没有解释。。各位高手走过路过给我疏通疏通思路吧！谢啦！！！