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  3. To enjoy a longer life has been a dream for mankind since always. With the improvement of health care, nutrition and health know

To enjoy a longer life has been a dream for mankind since always. With the improvement of health care, nutrition and health know

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问题     To enjoy a longer life has been a dream for mankind since always. With the improvement of health care, nutrition and health knowledge, we began to make dramatic efforts to reduce the effects of the forces that had traditionally shortened human existence.
    10 million to 17 million people aged 65 or older made up less than 1 percent of the world’s population in 1900. Survival rates began to climb for infants, children and women of childbearing age, gradually lifting humanity’s average life span. By 2000, 606 million were aged 60 or older, and they made up almost 10 percent of the world’s population. According to the United Nations report World Population Prospects, by 2050 that group could swell to 1.9 billion and constitute one fifth of the world’s projected population.
    But it is not all about to live a longer life. And it would not be such a good idea to live your last years in illness and pain. In fact, it would turn into a torture. No, we want to live better, more youthful days while we’re living longer. Diet, exercise and a lucky draw from the gene pool can take us only so far, however. That’s where science comes in.
    As medicine tries to find out the means to extend life, culture and its institutions will have to deal with the consequences of success. Age-entitlement programs, such as Social Security, were formed when younger workers far outnumbered retirees, who drew benefits for only a few years; what reforms will longer lives require? When savings are used up by parents who may be retired for up to one third of their lives? And, equally important, how will we make our extra years emotionally rewarding and rich?
    Medicine will continue to advance, and, we expect, society and policymakers will have to learn to adapt to the challenges of longevity-both providing it and providing for it-that await us all.
选项 A、We now have better equipment in hospitals.
B、We are now better informed about how to live a healthy life.
C、We know what kind of food would do us good, and what wouldn’t.
D、We are now better financially supported when we get old.
答案B
解析 考查对于文章细节的把握，难度不大。明确告诉我们考查第一段，在第一段中作者提出了三个因素来促使我们探索长寿的问题，这三个因素分别是“the improvement of health care，nutrition and health knowledge”，对比选项，我们可以看出，A项对应原文中的health care，B项对应原文中的health knowledge，而C项则对应原文中的nutrition，只有D并没有在原文中出现，根据题目要求，则D项为正确选项。
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