时间:2010-12-15 20:43:00
参考答案： C 答案解析：
1Which of the following is NOT true of working class Americans'.
A.They work long hours B.They live from paycheck to paycheck. C.They don't want to be healthy eaters。 D.They want to save money for presents。
参考答案： A 答案解析：
2What does the survey indicate?
A.Many low-income Americans want large portions. B.Twenty percent of Americans want smaller portions。 C.Fifty-seven percent of Americans want large portions. D.Forty—five percent of Americans want smaller portions．
参考答案： D 答案解析：
3What happened In the l 970s?
A.The US government called on its people to reduce their weight. B.Health experts persuaded restaurants to serve smaller portions. C.The United States produced more grain than needed. D.The American waistline started to expand．
参考答案： A 答案解析：
4Why do American restaurants serve large portions?
A.Because Americans associate quantity with value. B.Because Americans have big bellies. C.Because Americans are good eaters. D.Because Americans are too weak．
参考答案： C 答案解析：
5Parents in the United States tend to ask their children
A.to save food for tomorrow. B.to wash the dishes. C.not to waste food. D.not to eat too much． 3、(三)U．S．Life Expectancy Hits New HighLife expectancy rates in the United States are at an all-time high, with people born in 2005 projected to live for nearly 78 years, a new federal study finds．The finding reflects a continuing trend of increasing life expectancy that began in l 955, when the average American lived to be 69.6 years old．By l 995, life expectancy was 75．8 years, and by 2005, it had risen to 77．9 years, according to the report releasedWednesday。"This is good news." said report co-author Donna Hoyert, a health scientist at the National Center for Health Statistics．“It's even better news that it is a continuation of trends, so it is a long period of continuing improvement."Despite the upward trend, the United States still has a lower Life expectancy than some 40 0ther countries, according to the U．S．Census（人口普查）Bureau．The country with the longest life expectancy is Andorra at 83.5 years, followed by Japan, Macau, San Marino and Singapore．Much of the increase owes to declining death rates from the three leading causes of death in the country-heart disease, cancer and stroke．In addition, in 2005, the U．S．death rate dropped to an all-time low of less than 800 deaths per l00, 000.Dr．David Katz, director of the Prevention Research Center at Yale University School of Medicine, said, "News that life expectancy is increasing is, of course, good．But the evidence we have suggests that there is more chronic disease than ever in the U．S."Adding years to life is a good thing, Katz said．"But adding vital life to years is at least equally important．If we care about living well, and not just longer, we still have our work cut out for us." he said.
参考答案： B 答案解析：
1The expression "adding vital life to years" in the last paragraph means
A.living longer. B.living well。 C.living longer and well. D.living at any cost．
参考答案： D 答案解析：
2Which of the following statements is NOT true?
A.The U．S．Life expectanc