A study commissioned by the Department of Agriculture showed that if calves exercise and associated with other calves, they will require less medication and gain weight quicker than do those raised in confinement.
(A) associated with other calves, they will require less medication and gain weight quicker than do
(B) associated with other calves, they require less medication and gain weight quicker than
(C) associate with other calves, they required less medication and will gain weight quicker than do
(D) associate with other calves, they have required less medication and will gain weight more quickly than do
(E) associate with other calves, they require less medication and gain weight more quickly than
答案是E
OG中解释D说："do must be omitted" 为什么呢？
比如：
1）Tom requires less medication than Jerry does.
2）Tom gains weight more quickly than Jerry does.
这两个句子中的"does"有什么错呢？
我觉得第一句要是没有does就有歧义。第二句没有does还可以理解，但是有does也没错啊。
求大家帮忙看看~~~~-- by 会员 huangyouhuifei (2011/3/8 18:57:59)