18.--“What do you think of chemistry?”--“In my opinion, chemistry is ______ physics.”

　　 A. a subject so difficult as　　　　　　　　 B. a subject as difficult as

　　 C. as a difficult subject as　　　　　　　　 D. difficult as a subject as

17.Two thousand years ago silk was traded along ______ is called the Silk Road.

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

16. The　　　 look on his face suggested that he 　　　that.

　　 A. surprising； had expected　　　　　　　　　　 B. surprised； hadn' t expected

C. surprising； would expect　　　　　　　　　　 D. surprised； didn't expect

15. Many endangered animals, such as the Malayan sun bear, _____ in danger of dying out.

　　　 A. remain　　　　　　　　 B. remains　　　　　　　　 C. are remained　　　　 D. is remained

14. The __________ question for him is to ________ whether bees could tell each other the exact position of a feeding place.

　　　 A. remaining; find out　 B. remained; find out　 C. remaining; find　 D. remained; look for

13. ----You’ve made great progress in your studies of English, haven’t you?

　 ---- Yes, but much ______.

A. remains to do　　 B. is remained to do　 C. remains to be done　 D. is remained to be done

12. This problem may lead to more serious ones if 　　　　　　unsolved．

　　　 A．making　　　　　　　 B．remained 　　　　　 C．keeping 　　　　　　 D．left

11. As far as I am concerned, education is about learning and the more you learn, _________.

　 A. the more for life are you equipped　 B. the more equipped for life you are

　 C. the more life you are equipped for　 D. you are equipped the more for life

10. In recent years travel companies have succeeded in selling us the idea that the further we go, ______________.

　A. our holiday will be better　　 B. our holiday will be the better　

C. the better our holiday will be　 D. the better will our holiday be

9. The family were so pleased when the long-lost jewels____.

　 A. was come to light　 B. went to light　 C. was going to light　 D. came to light