132. 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

请问如果把(c)改成 as many as those who are enrolled in ，（C）可不可以成为一个正确的选项呢？谢谢

不行, as many as的第二个as为关代，可当主语，因此those和who都不可出现。

我觉得如果把(c)改成 as many as those who are enrolled in ， 是可以的。

as做关系代词，代替that, who, which, 只是当as之前有名词时。这里，第二个as之前是many (adj)