标题: 【求助】OG 一道语法题！！ [打印本页] 作者: EllenChang 时间: 2011-12-4 22:25 标题: 【求助】OG 一道语法题！！ 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