1. In recent years cattle breedershave increasingly used crossbreeding,
in part that their steers shouldacquire certain characteristics and partly because crossbreeding is said toprovide hybrid vigor.
(A) in part thattheir steers should acquire certain characteristics
(B) in part forthe acquisition of certain characteristics in their steers
(C) partly becauseof their steers acquiring certain characteristics
(D) partly becausecertain characteristics should be acquired by their steers
(E)(E) partly toacquire certain characteristics in their steers
我选了D。。就是因为够对称= =为什么还是错呢。。
-- by 会员 yeah529 (2011/10/8 21:40:26)