2. 外语
  3. In the United States, 30 percent of the adult population has a "weight problem". To many people, the cause is obvious: they eat

In the United States, 30 percent of the adult population has a "weight problem". To many people, the cause is obvious: they eat

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问题    In the United States, 30 percent of the adult population has a "weight problem". To many people, the cause is obvious: they eat too much. But scientific evidence does little to support this idea. Going back to the America of the 1910s, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less and didn’t watch television. Several modern studies, moreover, have shown that fatter people do not eat more on the average than thinner people. In fact, some investigations, such as the study of 3, 545 London office workers, report that, on balance, fat people eat less than slimmer people.
   Studies show that slim people are more active than fat people. A study by a research group at Stanford University School of Medicine found the following interesting facts:
   The more the men ran, the more body fat they lost.
   The more they ran, the greater amount of food they ate.
   Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.
Modern scientific researches have reported to us that______.
选项 A、fat people eat less food and are less active
B、fat people eat more food than slim people and are more active
C、fat people eat more food than slim people but are less active
D、thin people run less, but have greater increase in food intake
答案A
解析 细节判断题。答案在第二段和第三段：Several modern studies have shown that fatter people do not eat more on the average than thinner people；Slim people are more active than fat people。因此胖人吃得少，活动少。A为正确答案。
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