22. A. still 　　　　B. no more 　　C. no longer 　　D. even

21. A. put 　　　　B. play 　　　　C. find 　　　　D. take

14. What can we learn from the conversation?

A. If the man takes the NO.113 bus, he should get off at the second stop.

B. Opposite the Health Center is the Computer Center.

C. If the man walks to the Computer Center, he has to go across a big bridge.

13.　　 Where does the man head for?

A. The Computer Center　　　 B. The City Center　　　　　　　 C. The Health Center

12. What is the pollution by SO2 caused by?

A. Heavy traffic　　　　　　　　　 B. So many factories　　　　　　 C. Modern communication

听第五段对话，回答第13-15题。

11.　　 Which is the most serious pollution?

A. Noise pollution　　　　　　　　 B. Air pollution　　　　　　　　　　 C. Water pollution

10. Why is our world becoming much smaller?

A.　　　 Because of the rise in pollution.

B.　　　　 Because of science development.

C.　　　　 Because of the big population.

9.　 What will the woman do?

A. Stop work　　　　　　　　　　　 B. Be in hospital　　　　　　　　　 C. Reorganize the work

听第四段对话，回答第10-12题。

8.　　　　 What does the man advise the woman to do?

A. Take more milk　　　　　　　 B. Take holidays　　　　　　　　　 C. Change a job