44. Every man, woman and child ______ some history, enough at least, to survive in the world.

a. knows b. know c. is known d. are known

45. None of them ______ my friends.

a. is b. are c. was d. has been

46. Thirty dollars _____ too expensive.

A. are　 　B. is 　 C. were　 　D. be

47. Getting to other planets or to the moon _____ many problems.

a. involve b. involves c. involving d. to involve

48. In that country, the rich ______ richer, the poor, poorer.

a. become b. has become c. becomes d. is becoming

49. About 60 percent of the students _____ from the south, the rest of them _____ from the north and foreign countries.

A. are/is B. are/are　 C. is/are D. are

50. Not one in one hundred children exposed to the disease ______ likely to develop it.

a. should be b. must be c. is d. are

主谓一致练习答案

1-5 CAADC 6-10CB ADB 11-15 CDBBC 16-20 BDBDC

21-25 DAAAC 26-30 ADADD 31-35 CCCDC 36-40 ADABC

41-45 DACAB 46-50 BBABC