29. The research is so designed that once __________ nothing can be done to change it.

A. begins　　　　 B. having begun　　 C. beginning　　 D. begun

27. ---Why does the lake smell terrible?

--- Because large quantities of water ________

A. have polluted　　　　　 B. is being polluting　

C. has been polluted　　　　 D. have been polluted.

28 They came back very late because the party came to _________ at midnight.

A. an end　　　 B. a stop　　　　 C. a decision　　　 D. a conclusion

24. _________ person like him won’t be satisfied with _________ little progress that he has made.

A. The; a　　　　 B. A; the　　　 C. A; /　　　　 D. The ; /

25 --- It’s getting late. I’m afraid I must be going now.

--- OK. __________.

A. Take it easy　　　B. Go slowly　　　C. Stay longer　　　 　D. See you

26 __________ is known to everybody, the moon travels round the earth once every month.

A. It　　　　　　　　　　　　 B. As　　　　　　　　　　C. That　　　　　　　　　　 D. What

23. I’ve lived in the south for over ten years. So I have been accustomed to _________ rice.

A eat　　　　　　 B eating　　　　 C ate　　　　 D eaten

22. Only in this way__________ to make improvement in the operating system.

A. you can hope　　 B. you did hope　 C. can you hope　　 D. did you hope

21. The rule can not be __________ every case.

A apply to　　　 B apply for　　　 C applied to　　 D applied for

16. Why are office workers required to take examinations according to the talk?

A. Because they can show whether they are smart enough for harder work.

B. Because they can show whether they are fit for their present job.

C. Because the exam results can be used to set the salary.

15. Why do students in universities usually take examinations?

A. To prove that they are fit for futher studies.

B. To get the qualification for future work.

C. To classify the students into different grades.

14. What are examinations meant to test?

A. One’s learning methods.

B. One’s knowledge.

C. One’s experience.