OG46

ironfish

OG 46. A study commissioned by the Department of Agriculture showed that if
claves exercise and (associated with other calves, they will require less
medication and gain weigh quicker than do) those raised in confinement.

Answer:
(E) associate with other calves, they require less medication and gain weight more
quickly than

我觉得(E) 中最后应该加个do才对。可答案为什么没有do呢？

[此贴子已经被作者于2003-8-1 8:30:55编辑过]

pony

比较的对象是前半句中“medication and gain "---宾语，所以不能用动词

joywzy

谓语可省略，只要比较对象一致就可。如果要加，也是加WILLL。