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.
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 这题答案E。 问:are前面省略掉了主语,不是一般代词作宾语才省略吗? 代词什么情况能够省略?