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.
204提: 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
E我想破头也想不出为啥与“partly because crossbreeding is said to provide hybrid vigor”平行,就因为以“partly”开头吗?
不过我对 partly to acquire certain characteristics in their steers 这句话的意思还是不理解。 怎么能从steers的身上获得特定的特性呢? 阉牛是没有生育能力的呀? steer: 1 : a male bovine animal castrated before sexual maturity compare STAG 3 2 : an ox less than four years old