試題詳解

58. The two Harvard economists note in their study that, for much of the 20th century, ________. 　
(A)enrollment kept decreasing in virtually all American colleges and universities 　　
(B)the labor market preferred high-school to college graduates 　　
(C)competition for university admissions was far more fierce than today 　　
(D)the gap between the earnings of college and high-school graduates narrowed