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  3. 　　We often hear that 60 is the new 50 and 70 the new 60. It is a bromide borne out by old photos. Just check out images of your

　　We often hear that 60 is the new 50 and 70 the new 60. It is a bromide borne out by old photos. Just check out images of your

admin2022-02-15  4
问题 　　We often hear that 60 is the new 50 and 70 the new 60. It is a bromide borne out by old photos. Just check out images of your grandparents or great-grandparents and notice their stooped and soft bodies, their lined faces and how they seem anchored in their chairs when they were barely pushing 60. What a contrast with vigorous, gym-going sexagenarians of today！
　　Recent studies comparing populations born in different decades have looked beyond these surface impressions to nail down actual physical and mental differences in the ways we are aging.
　　A pair of new studies from Finland—one looking at physical aging and one looking at cognitive aging—strikingly demonstrates some of the details of generational change. The research compares adults born in 1910 and 1914 with those born roughly 30 years later. The later-born group could walk faster, had a stronger hand grip and could exert more force with their lower leg. Such metrics are reliable predictors of disability and mortality. On cognitive tests, the later cohort had better verbal fluency, clocked faster reaction time on a complex finger-movement task, and scored higher on a test matching numbers to symbols. But not everything changed across the generations; measures of lung function were surprisingly static, and there was no improvement in the short-term-memory task of recalling a string of digits—possibly because rote memorization has been de-emphasized in school and in daily life in recent decades, the researchers suspect.
　　There are many reasons that people are aging better, including improved medical care and a drop in smoking, but the factors that loomed largest in the Finnish study of physical function, lead author Kaisa Koivunen says, were that the later-born adults were more physically active and had bigger bodies, which suggests better nutrition. For brain function, the key seems to be more years of education. In both the Finnish and the Dutch studies, cognitive differences between the cohorts largely disappeared when researchers controlled for this factor.
　　Education is a powerful influence on aging and health. With more education, you are probably going to have a larger income, which means you are more likely to go to the doctor, have good nutrition and have a job that is not eviscerating your body. In prosperous countries, these advantages have not only lengthened life but most likely ensured that more years are spent in good health.
　　In the U. S. , the benefits of prosperity are less equally distributed than in Finland or Denmark.
　　The average life span is seven years shorter in a poor state such as Mississippi than in a wealthier one such as California. There are lots of people who cannot take the drugs they need because they cannot pay for them and they may lack access to healthy foods and opportunities for exercise and learning that extend their vital years. In short, 70 may be the new 60 for many of us but not for all.
What is the most important factor that leads to aging better?
选项 A、Advanced medical care.
B、Fewer people to smoke.
C、More nutrients taken.
D、A bigger brain structure.
答案C
解析 细节题。根据题干可定位至第四段，其中most important对应loomed largest，选项C是better nutrition的同义替换，故选项C正确；选项A对应improved medical care，选项B对应a drop in smoking，这两项都不是衰老变慢最重要的原因，故排除；选项D为无中生有，文章中提到了大脑功能，但没有谈到其结构大小，故排除。
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