选择题：11.Normally a student would at least attendclasses

11. Normally a student would at least attend classes each week.
A. 10 B. 12 C. 15 D. 20
12. According to the first paragraph an American student is allowed _.
A.to live in a different university
B.to take a particular course in a different university
C.to live at home and drive to classes
D.to get two degrees from two different universities
13. American university students are usually under pressure of work because .
A.their academic performance will affect their future careers
B.they are heavily involved in student affairs
C.they have to observe university discipline
D.they want to run for positions of authority in student organizations
14.Some students arc enthusiastic for positions in student organizations probably because_
A. they hate the constant pressure and strain of their study
B. they will then be able to stay longer in the university
C. such positions help them get better jobs
D. such positions are usually well paid
15. The student organizations seem to be effective in
A)dealing with the academic affairs of the university
B)ensuring that the students observe university regulations
C)evaluating students, performance by bringing them before a court
D)keeping up the students, enthusiasm for social activities