单项选择题
A．advantages of college study in North America B．differences in college education In different countries C．American higher education D．higher education in general
A．study harder than they did in high school B．study as hard as they did in high school C．find college studies easier than high school work D．find it easier to go to graduate school
A．pass the entrance exams B．study in private schools C．earn enough money D．do some course work