大全40 对省略的困惑

xinxian0

40.According to a study by the Carnegie Foundation for the Advancement of Teaching, companies in the United States are providing job training and general education for nearly eight million people, about equivalent to the enrollment of the nation’s four-year colleges and universities.
(A) equivalent to the enrollment of
(B) the equivalent of those enrolled in
(C) equal to those who are enrolled in
(D) as many as the enrollment of
(E) as many as are enrolled in

答案是E， 知道这里是people 和people 的比较， 可是E选项的把people给省略了，这是什么用法啊，在什么时候可以做这样的省略啊？
哎，一直对省略的问题纠缠不清，助动词什么时候该补也搞不很清，希望大家帮忙解释一下了~
谢谢谢谢~~

xinxian0

自己顶一下~看谁能帮助解答一下~谢谢了~

lmiltamy

頂一下
關於E的正確選項

,about as many as......   在這個句子中扮演什麼成份?