单选题 {{B}}第三篇{{/B}}
{{B}}U.S. Life Expectancy Hits New High{{/B}}
Life 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 1955, when the average American lived to be 69.6 years old By 1995, life expectancy was 75.8 years, and by 2005, it had risen to 77. 9 years, according to the report released Wednesday.
"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 other 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 100,000.
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.
单选题 Since 1955, life expectancy rates in the U. S. have
【正确答案】 D
【答案解析】短文的头两段说到,自从1955年起,美国人均预期寿命不断增加这一趋势一直在延续。
单选题 Compared with the country with the longest life expectancy, the U. S. is
【正确答案】 C
【答案解析】短文的第四段说,预期寿命最长的国家是安哥拉,为83.5岁,而美国只有78岁,因此相差大约6岁。
单选题 The increase in the U. S. life expectancy is mostly due to
【正确答案】 A
【答案解析】短文的第五段说,美国预期寿命的增加很大程度上归功于三大主要疾病——心脏病、癌症和中风——导致的死亡率的下降。
单选题 Which of the following statements is NOT true?
【正确答案】 D
【答案解析】短文的第六段说,在2005年,美国的死亡率降至有史以来最低水平,每十万人只有不到八百人死去。短文并没有说美国的年死亡率为每十万人超过八百人。
单选题 The expression "adding vital life to years" in the last paragraph means
【正确答案】 B
【答案解析】这个短语指的是生活质量的提高。