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.
41 Since l 955. Life expectancy rates in the U. S. have
A moved up and down。 B been declining.
C remained steady. D been on the rise.
42 Compared with the country with the longest Life expectancy, the U. S. is
A nearly 3 years behind. B nearly 4 years behind.
C nearly 6 years behind. D nearly 8 years behind。
43 The increase in the U. S. Life expectancy is mostly due to
A declining death rates from heart disease. cancer and stroke.
B increasing life expectancy rates in some other countries.
C a rise in the rate of chronic disease.
D a declining birth rate.
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