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  3. Have you eaten too much over the holidays? You should try fidgeting for a while. Those people around you might not like it, but

Have you eaten too much over the holidays? You should try fidgeting for a while. Those people around you might not like it, but

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问题    Have you eaten too much over the holidays? You should try fidgeting for a while. Those people around you might not like it, but scratching (moving your nails against a part of your body) and twitching (moving suddenly and quickly when you don’ t want to) are important ways of burning up calories.
   American researchers have found that some people’ s squirming(continuously turning your body when nervous) and wiggling (moving in small movements, especially from side to side) equal several miles of slow running each day.
   The scientists, basing the National Institute of Health’ s laboratory in Phoenix, Arizona, are studying why some people get fat and others stay slim.
   In one study, each of 177 people spent 24 hours in a room in the institute where the amount of energy was measured by their oxygen and carbon dioxide levels. By the end of the day, some people had burned up 800 calories in toe-tapping (moving the front part of your feet up and down) , finger-drumming (hitting your fingers continuously and lightly against something hard) and other nervous habits. However, others had burned up only 100 calories.
   The researchers have found that slim women fidget more than fat women, but there is no significant difference among men. Heavy people burn up more energy when they fidget than thin people do.
Scientists have found in the experiment that ______.
选项 A、the energy burned up by fat people when they fidget is more than that burned up by thin people when they fidget
B、some people’ s fidgeting burned up more than 800 calories, but some people’ s fidgeting burned up less than 100 calories
C、slim women fidget more than fat women but fat men fidget more than thin men
D、thin men fidget more than fat men
答案A
解析 根据最后一段最后一句“Heavy people burn up more energy when they fidget than thin people do．”可知，在坐立不安时，胖人比瘦人消耗的能量要多，所以A项正确。根据第四段最后两句“…some people had burned up 800 calories…others had burned up only 100 calories．”可知，在坐立不安时，一些人消耗了800卡路里，另一些人只消耗了100卡路里，所以B项不正确。根据最后一段第一句“The researchers have found that slim women fidget more than fat women，but there is no significant difference among men．”可知，研究人员发现，苗条的女性比肥胖的女性更容易坐立不安，但在男性中却没有明显的差异，所以C、D两项不正确。故选A。
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