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.
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 但是请各位指教一下 as many as ARE enrolled in,这里的主语不需要补出吗?高手能分析一下句子结构吗?总感觉这么说少了些什么呢