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In recent years cattle breeders have increasingly used crossbrading, in part that their steers should acquire certain characteristics and partly because crossbreading is said to provide hybrid vigor.
D) partly because certain characteristics should be acquired by their steers E) partly to acquire certain characterisitcs in their steers
答案是E的,我明白D选项中被动很awkward, 但是我觉得E选项没有做到平行啊,and后面是partly because....,而E选项中是是partly。。 |
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