The major point discussed in the passage is _______.

单项选择题America university students are usually under pressure of work because _______.

单项选择题Normally a student would at least attend ______ classes each week.

单项选择题The student organizations seem to be effective in ______.

单项选择题According to the first paragraph an American student is allowed ______.

单项选择题Some students are enthusiastic for positions in student organizations probably because______.