19. Charles Babbage is considered _______the first computer.

A. to invent　　 　　　B. to be invented　

C. to have invented　 D. inventing

18. -----We want to sit at the table near the window.

　 　　-----I’m sorry, but it _____ already.

A. has taken　　 B. took　　 C. was taken　　 D. has been taken

17. Great changes ______in my hometown, and a lot of trees _______.

A. have been taken place; have been lanted　

B. have taken place; have been planted

C. have taken place; have planted　　　　　

D. were taken place; were planted

16. If Newton lived today, he would be surprised by what _____in science and technology.

A. had discovered　　　　　　　 B. had been discovered　

C. has discovered　　　　　　　 D. has been discovered

15. With the help of high technology, more and more new substances_____in the past years.

A. discovered　　　　　　　 　　　B. have discovered　

C. had been discovered　　　　　 D. have been discovered

14. ------________you _______him around the museum yet?

　 ------Yes. We had a great time there.

A. Have; shown　　 B. Do; show　　 C. Had; shown　 D. Did; show

13. ------Excuse me, could you tell me the way to the British Museum?

　 -----Sorry, I’m a stranger here.

　 -----_____________.　

A. Thanks anyway　　 B. It doesn’t matter　　 高.考.资.源.网

C. Never mind　 　　　D. No problem

12. I have been living in the United States for twenty years, but never ___so lonely as now.

A. have I felt　　 B. I had felt　 C. I have felt　　 D. had I felt

11. Prefessor James will give us a lecture on the Western culture, but when and where ____ yet.　　　

A. hasn’t been decided　　　 B. haven’t decided　

C. isn’t being decided　　　　 D. aren’t decided

10. To learn English well, you must do more reading, writing, listening and speaking. ____, you can use the Internet to learn English.

A. Anyway　　 B. After all　　 C. Totally　　 D. What’s more