B. They tasted better. D. They were widely advertised.
21. A. It is sure to fluctuate . C. It will remain basically stable.
B. It is bound to revive. D. It will see no more monopoly
22. A. Organising protests C. Acting as its spokesman.
B. Recruiting members D. Saving endangered animals.
23. A. Anti-animal-abuse demonstrations B. Anti-nuclear campaigns
C. Surveying the Atlantic Ocean floor D. Removing industrial waste.
24. A. By harassing them. C. By taking legal action.
B. By appealing to the public D. By resorting to force.
25. A. Doubtful C. Indifferent .
B. Reserved D. Supportive
26. A, The air becomes still. C. The clouds block the sun.
B. The air pressure is low. D. The sky appears brighter.
27. A. Ancient people were better at foretelling the weather.
B. Sailors’saying about the weather are unreliable.
C. People knew long ago how to predict the weather.
D. It was easiter to forecast the weather in the old days.
28 A. Weather forecast is getting more accurate today.
B. People can predict the weather by their senses
C. Who are the real esperts in weather forecast .
D. Weather changes affect people’s life remarkably
29. A. They often feel insecure about their jobs.
B. They are unable to decide what to do first .
C. They are feel burdened with numerous tasks every day.
D they feel burdened with numerous tasks every day
30 A. Analyze them rationally. C. Turn to others for help.
B. Draw a detailed to-do list . D. Handle them one by one .
31. A. They have accomplished little . C. They have worked out a way to relax.
B. They feel utterly exhausted . D. They no longer feel any sense of guilt.
32. A. Their performance may improve.
B. Their immune system may be reinforced
