(64)A. O(n) B. O(n2) C. O(logn) D. O(nlogn)
查看答案
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