If you want to stay young, sit down and have a good think. This is the research result of Professor Faulkner, who says that most

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问题     If you want to stay young, sit down and have a good think. This is the research result of Professor Faulkner, who says that most of our brains are not getting enough exercise and as a result, we are ageing unnecessarily soon.
    Professor Faulkner wanted to find out why healthy farmers in northern Japan appeared to be losing their ability to think and to reason at s relatively early age, and how the process of ageing could be slowed down.
    He set about measuring brain volumes of a thousand people of different ages and occupations.
    Computer technology enabled him to obtain precise measurements of the volume of the front and side sections of the brain, which relate to intelligence and emotion, and determine the human character.
    Contraction of front and side parts—as cells die off—was observed in some subjects in their thirties, but it was still not evident in some sixty and seventy - year - olds.
    Faulkner concluded from his tests that there is a simple way to slow the contraction—using the head.
    The findings show that contraction of the brain begins sooner in people in the country than in the towns. Those least at risk, says Faulkner, are lawyers, followed by university professors and doctors. White -collar workers doing routine work are, however, as likely to have shrinking brains as the farm workers, bus drivers and shop assistants.
    Faulkner’s findings show that thinking can prevent the brain from shrinking. Blood must circulate properly in the head to supply the fresh oxygen the brain cells need. "The best way to maintain good blood circulation is through using the brain, " he says. " Think hard and engage in conversation. Don’t rely on pocket calculators".
The professor’s findings show that______.

选项 A、our brains shrink as we grow old
B、the front section of the brain does not shrink
C、seventy - year - olds have better brains than sixty - year - olds
D、thinking can slow down the process of ageing

答案D

解析 细节题。本题问教授的发现证明了……依据本文最后一节可知D对。文中说福尔科纳的研究发现证明思考能预防大脑萎缩,而前文又说到大脑萎缩是提前衰老的原因,故预防了大脑萎缩也不推迟了衰老,思考能推迟衰老。
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