OG 204

zjw007

204. 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

ANS： E， 我好像在哪儿见过说动词不定式不可以直接放在冒号后，是不是这样的？ btw, 这里的冒号可以去掉吗？

dormousedzc

should只能表示"应该"的语气么,怎么我好象在那道题里曾经看到should有表示对未来进行预测的用法,所以就选了D,之前还以为本题是考察的是平行对称结构和should的特殊用法呢.请NN指教