12、
A.Cooperation and concession.
B.Equality and mutual benefit.
C.Exchanging daily necessities.
D.Introducing advanced technology.
13、
A.It's setting up joint ventures.
B.It's branching out into politics.
C.It computerizes management.
D.It accepts delayed payment.
14、听音频，回答下列14-38题：
A.Growing indifference of college students to other people.
B.Ever-increasing Internet addiction on college campuses.
C.Sharp dropping in age of drug abusers.
D.Degrading quality of college education.
15、
A.If one gets anxious or depressed when not online.
B.If a student is isolated by his peers.
C.If one finds it hard to concentrate in his work.
D.If one has an urge to surf the Net whenever he can.
16、
A.Spend more time outdoors.
B.Do various activities.
C.Change one's daily routine.
D.Go on a healthy diet.
17、听音频，回答下列17-41题：
A.They were controlled less strictly by the authorities.
B.They treated their workers more humanely.
C.They completely ignored consumers' health.
D.They turned out more unhealthy products at will.
18、
A.Paid much attention to the results of scientific discoveries.
B.Seldom introduced safety laws before disasters occurred.
C.Hardly ever looked into the causes of tragedies.
D.Impose safety rules as soon as accidents took place.
19、
A.There are altogether three departments which protect customers and workers.
B.A company with poor or dangerous working conditions is likely to be punished.
C.Stores dealing in foods and drugs are controlled by the local government.
D.The protection of workers' health and safety is still not well ensured.
20、
A.Industries in the past and at present.
B.Changes in the development of industries.
C.The protection of industrial workers and customers.
D.The freedom of industries today and in the past.
21、听音频，回答下列21-45题：
A.Coca Cola.
B.Sausage.
C.Milk.
D.Fried chicken.
22、
A.He has had thirteen decayed teeth.
B.He doesn't have a single decayed tooth.
C.He has fewer decayed teeth than other people of his age.
D.He never had a single tooth pulled out before he was fifty.
23、
A.Brush your teeth right before you go to bed in the evening.
B.Have as few of your teeth pulled out as possible.
C.Have your teeth X-rayed at regular intervals.
D.Clean your teeth shortly after eating.
24、听音频，回答下列24-48题：
A.She went to college nearby.
B.She won a contest.
C.Her family vacationed there.
D.She was a friend of Leonard Bernstein's.
25、
A.It is held in Boston.
B.All the seats are indoors.
C.It is not well-known.
D.It has been going on for a long time.
26、
A.The lawn is not clean.
B.The lawn is usually very crowded.
C.The setting isn't very pretty.
D.The audience might get wet.