15. More attention is to be paid to energy exploration to find ______ energy.

　 A. traditional　　　　　　　 B. alternative　　　　　 C. available　　　　　　 D. inexpensive

14. The lazy boy is expecting a way ______ he can get through the exams without hard work.

　 A. that　　　　　　　　　　　 B. in that　　　　　　　 C. which　　　　　　　 D. where

13. ______ it have been the failure to pick up directions from the ground control that caused the air crash?

　 A. Must　　　　　　　　　　 B. Could　　　　　　　　 C. Would 　　　　　　 D. Should

12. If you often feel tired and can’t focus your attention, that is ______ you have to stop working too hard and to have a rest.

　 A. why　　　　　　　　　　　　　　 B. whether　　　　　　 C. when　　　　　　　　 D. what

11. More often than not, it is difficult to ______ the exact meaning of a Tang poem in English.

　 A. exchange　　　　　　　　　　 B. convey　　　　　　　 C. transfer　　　　　　 D. consult

10. The Internet, as well as newspapers and magazines, ______ a more and more important part in our daily life.

A. have played　　 　　 B. are playing　 　　 C. is playing　　　 D. has been played

9. When all the guests have arrived, please don’t forget to show them around our school, ______?

A. do you　　 　　　　 B. don’t you　　 　 C. will you　　 　　　 D. won’t you

8. ---Has your former classmate come back from America?

---Yes, he _______ there for eight years.

A. has stayed　　　　　　 B. stays　　　　　　　　 C. stayed　　　　 　　 D. had stayed

7. Luckily, the black box, ______ to record the flight data, was soon found.　

A. being designed　　　 B. designing　　　　　 C. to design　　　　　 D. designed

6. One of the consequences of our planet’s being warming up is a(n) ______ in the number of natural disasters.

　 A. account　　　　　　　　 B. reason　　　　　　　 C. increase　　　　　　 D. occurrence