40. Only then _____ what “revolution” meant.

　　 　　 A. I realize　　 B. did I realize　 　　　 C. I did realize　 D. do I realize

39. I have tea for breakfast and so _____ my　 wife.

　　 　　 A. have　　 B. has　 　 C. do　　 D. does

38. Never _____ seen him before.

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

37. So fast _____ that it is difficult for us to imagine its speed.

　　 　　 A. light travels　　 　　 B. travels the light 　　　 C. do light travels D. does light travel

36. Never _____ such hard years in all her life as she had in her four years’ laboratory work looking for radium.

　　 　　 A. had Madame Curie had　　　 　　　 B. Madame Curie had

　　 　　 C. did Madame Curie have　　　 　　　 D. Madame Curie had

35. _____ surely I would never have believed.

　　　　 　A. If I didn't see　　 B. Have I not seen C. Had I not seen　 D. If I haven't see

34. _____ so busy, I should go with you.

　　 　　 A. Were I not　 　 B. Was I not　 　　　 C. If I'm not　　 　 D. Had I no

33. _____, the workers in the transistor plant have made great contributions to the country.

　　 　　 A. As they are young　　　　　 B. Young as they are

　　 　　 C. As young are they　　　　　 　 D. Young like they are

32. His mother will not allow him to go, _____.

　　 　　 A. his father will either　　　 　　 B. either will his father

　　 　　 C. either his father will　　　 　　 D. neither will his father

31. Across the river_____.

　　 　　 A. lies a new built bridge　　　 　 B. lies a newly built bridge

　　 　　 C. a new built bridge lies　　　 　 D. a newly built bridge lies