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.

　　31 Since l 955, lire expectancy rates in the U. S. have

　　A moved up and down.

　　B been declining.

　　C remained steady.

　　D been on the rise.

　　32 Compared with the country with the longest lire 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.

　　33 The increase In the U. S. lire expectancy is mostly due to

　　A declining death rates from heart disease, cancer and stroke.

　　B increasing lire expectancy rates in some other countries.

　　C a rise in the rate of chronic disease.

　　D a declining birth rate.

　　34 Which of the following statements is NOT true?

　　A The U. S. 1ife expectancy is at an all-time high.

　　B The U. S. death rate was at an all-time low in 2005.

　　C Chronic disease appears to be at an all-time high in the U. S.

　　D The annual death rate in the U. S. is over 800 deaths per l00, 000.

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