30.(　 ) A. angry　　　 B. happy　　　 C. sleepy　　　　　 D. involved

29.(　 ) A. urgent　　　 B. maximum　 C. minimum　　　　 D. private

27.(　 ) A. benefits　　 B. advantages　 C. energy　　　　 D. passion

(　 )28 A. away from　 B. out of　　　 C. on the border of　 D. at risk for

26.(　 ) A. responded　 B. released　　 C. dismissed　　　 D. delivered

25.(　 ) A. purchased　　 B. bought　　 C. sold　　　 D. brought

(B)

Many problems and frustrations(挫折), from anger to stress, have become part of the American way of life. They may result from inadequate sleep and widespread sleep problems according to a study 　　26　 April 2 by the National Sleep Foundation (NSF).

The study results show that while many Americans enjoy the 　　27　 　of sufficient sleep, as many as 47 million adults may be putting themselves　 28　 injury, and health and behaviour problems because they aren’t meeting their 　　29　 　sleep need in order to be fully alert (清醒) the next day. Such people are more likely to get 　　30　 　in traffic jams, quarrel with other people, or overeat, according to the 　　31　 　.

“The study provides new evidence that the quality and quantity of our sleep plays a significant role in our daily lives. In sum. The study results paint a new and unique　 　32　 　of Americans that shows ‘you are　 33　 　you sleep.’” The researchers noted, “Some of the problems we face may be linked to lack of sleep or poor sleep.”

The study 　34　 　how people described their general moods and attitudes on a typical day with their answers to a number of questions about their sleep. The conclusions suggest a direct link between more sleep and heightened daytime alertness with 　35　 　feelings that include a sense of peace, satisfaction with life, and being full of energy. Shorter sleep periods and daytime sleepiness were related to negative moods such as anger, stress, pessimism (悲观) , and tiredness.

24.(　 ) A. minutes　　　 B. seconds　　 C. hours　　 D. weeks

23.(　 ) A. seemingly　　 B. regularly　 C. irregularly　 D. presently

22.(　 )A. seldom　　　 B. never　　 C. occasionally　 D. frequently

21.(　 ) A. easily　　　　 B. clearly　　 C. hardly　　 D. nearly

20.(　 ) A. played　　　 B. watched　 C. skimmed　 D. exposed