17. Black holes _____ not be seen directly, so determining the number of them is a

tough task.

　　　 A. can　　　　　　　　　　　 B. should 　　　　　　　　 C. must 　　　　　　　　　 D. need　

16. The time he has devoted in the past years ________ the disable is now considered

_______ of great value.

　　　 A. to help, being　　　 B. to helping, to be C. to help, to be 　　　 D. helping, being　

15. When he turned professional at the age of 11, Mike _____ to become a world

champion by his coach and parents.

　　　 A. expected 　　　　　　 B. was expecting 　　 C. was expected 　　 D. would be expected

14. The government responded quickly, and new measures _____ which strengthened

their power.

　　　 A. being passed 　　　 B. were passed　　　　 C. passed 　　　　　　　　 D. had passed

13. -One week’s time has been wasted.

　 　-I can’t believe we did all that work for_______.

　　　 A. something 　　　　　 B. anything　　　　　　　 C. everything　　　　　　 D. nothing　　　　　

12. -Did the man hurt badly in the accident, doctor?

-Yes. ________ it goes, he will be in hospital for two months .

　　　 A. As long as 　　　　　 B. As far as 　　　　　　 C. As well as 　　　　　 D. As often as

11. He burned all the important documents __________ they should fall into the

enemy’s hands.

　　　 A. unless 　　　　　　　　 B. and 　　　　　　　　　　 C. due to 　　　　　　　　 D. for fear that　

10. David likes country life and has decided to __________ farming.

　　　 A. go in for 　　　　　　 B. go through 　　　　 C. go on to　　　　　　　 D. go with　

9. _________ youngest ______ he is among his four brothers, he is the cleverest.

　　　 A. ∕ , as　　　　　　　　 B. the, as 　　　　　　　　 C. ∕ , although 　　 D. the, although　

8. Foreign Minister Li Zhaoxing used plain language to make the Chinese foreign policy ________ to the whole world at the press conference on March 6^th, 2007.

　　　 A. get through　　　　　 B. get across　　　　　　 C. get over　　　　　　　　 D. get around