21. The hopes， goals， fears and desires ________ widely between men and women， between the rich and the

poor.

A) alter B) shift C) transfer D) vary

22. Some diseases are ________ by certain water animals.

A) transplanted B) transformed C) transported D) transmitted

23. It is our ________ policy that we will achieve unity through peaceful means.

A) consistent B) continuous C) considerate D) continual

24. Between 1974 and 1997， the number of overseas visitors expanded ________27%.

A) by B) for C) to D) in

25. Although many people view conflict as bad， conflict is sometimes useful ________ it forces people to test the relative merits of their attitudes and behaviors.

A) by which B) to which C) in that D) so that

21-25 DDAAC