标题: 求助OG verbal review 第22题 [打印本页] 作者: yunshishow 时间: 2011-8-1 23:09 标题: 求助OG verbal review 第22题 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 答案选E。但D答案并没有什么致命性的错误，而且D与后面的partly because crossbreeding is said to provide hybrid vigor更加平行。求牛牛解答。作者: zealdin 时间: 2011-8-2 01:03
题的意思是: 这些年来cattle breeders have increasingly used crossbreeding,一方面是这样可以获得certain characteristics in their steers,另一方面是因为crossbreeding据说可以provide hybrid vigor.