11.Which of the following best explains the word \"aggressive\" (paragraph 7)?
A.Brave. B.Harmful. C.Careless. D.hopeless.
12.George Annas would probably agree that doctors should be punished if they___.
A.manage their patients unskillfully. B.give patients more medicine than needed.
C.reduce drug dosages for their patients. D.made longer the needless suffering of the patients.
D STARTING TIME:MINUTES__________SECONDS_________
　　Normally a student must attend a certain number of courses in order to graduate, and each course which he attends gives him a credit(学分) which he may count towards a degree, In many American universities the total work for a degree is made up of thirty-six courses each lasting for one term. A typical(典型的) course is made up of three classes per week for fifteen weeks; while attending a university a student will probably attend four or five courses during each term. Normally a student would expect to take four years attending two terms each year. It is possible to spread the period of work for the degree over a longer period. It is also possible for a student to move between one university and another during his degree course, though this is not in fact done as a regular practice.　
　　For every course that a student follows is given a grade, which is recorded, and the record is serviceable for the student to show to expected employers. All this puts an unchanging pressure and tightness of work , but some students still find time for great activity in student affairs. Elections(选举) to positions in student organizations excite much eagerness .The effective work of obeying rules is usually performed by students who advise the college groups with power. Any student who is thought to have broken the rules, for example, by tricking his into appearing before a student court.With the huge numbers of students, the operation of the system does include a certain quantity of activity. A student who has held one of these positions of power is much respected and it will be of advantage to him later in his job.
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13. 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
14.America university students are usually under pressure of work because ______.
A.their college performance will change their future jobs B.they are heavily connected with student affairs
C.they have to obey university rules D.they want to run for positions of power
15.Some students are interested in positions in student organisations probably because ______.
A.they hate the unchanging pressure and tightness 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
16.The student organizations seem to be effective in ________.