9．Have you eaten too much over the holidays？You should try fidgetingfor a while．Those 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） is an important way of burning up calories．
American researchers have found that some people's squirming （continuously turn your body when nervous） and wigging （move in small movements，especially from side to side） equals several miles of slow running each day．
The scientists，based at the National Institute of Health's laboratory in Phenix，Arizona，are studying why some people get fat and other stay slim．
In one study 177 people each spent 24 hours in a room in the institute where the amount of energy is 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 foot 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 found that slim women fidget more than fat women，but there was no significant difference in men．Heavy people burn up more energy when they fidget than thin people do．
31．Which of the following can be used to explain the meaning of"fidgeting"？D
A．scratching and twitching
B．squirming and wigging
C．slow running
D．moving one's body nervously
32．According to the scientists，the reason why some people get fat and other people stay slim is thatC
A．thin people burn up less calories than fat people
B．fat people burn up more calories than thin people
C．those who burn up more calories than others will be thinner
D．those who fidget more than others will be thinner
33．Scientists found in the experiment thatA．
A．the energy burned up by fat people when they fidget was 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
34．If someone is thin in a pleasant way，we say they areC．
A．skinny B．bony C．slim D．underweight
35．Scientists think a fidget habit to beA．
A．a way to lose fat
B．a nervous habit annoying the people around
C．a better exercise than slow running
D．a habit of thin people．
分析 本文属于说明文阅读，作者通过这篇文章主要向我们描述了紧张的小动作可以帮助人燃烧更多卡路里，科学家研究发现这是一种健康的减肥方式．
解答 31．D．词义猜测题．根据第一段：Those 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） is an important way of burning up calories可知意为使一个人的身体感到紧张的方式；故选D．
32．C 细节理解题．根据最后一段：Heavy people burn up more 可知比别人燃烧更多卡路里的人更瘦些．故选C．
33．A．细节理解题．根据最后一段：The researchers found that slim women fidget more than fat women，but there was no significant difference in men可知燃烧脂肪多的人比燃烧脂肪少的人更多紧张的小动作；故选A．
34．C．推理判断题．根据最后一段：The researchers found that slim women fidget more than fat women可知如果某人以一种愉快的方式瘦，我们说他们是苗条；故选C．
35．A．推理判断题．根据第三段：The scientists，based at the National Institute of Health's laboratory in Phenix，Arizona，are studying why some people get fat and other stay slim可知科学家认为fidget习惯是指一个减肥的方法；故选A．
点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
