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  3. Exercise is one of the few factors with a positive role in longterm maintenance of body weight. Unfortunately, that message has

Exercise is one of the few factors with a positive role in longterm maintenance of body weight. Unfortunately, that message has

admin2010-02-20  81
问题 Exercise is one of the few factors with a positive role in longterm maintenance of body weight. Unfortunately, that message has not gotten through to the average American, who would rather try switching to "light" beer and lowcalorie bread than increase physical exertion. The Centers for Disease Control, for example, found that fewer than onefourth of overweight adults who were trying to shed pounds said they were combining exercise with their diet.
    In rejecting exercise, some people may be discouraged too much by calorieexpenditure charts, for example, one would have to briskly walk three miles just to work off the 275 calories in one delicious Danish pastry. Even exercise professionals concede half a point here. "Exercise by itself is a very tough way to lose weight." said York Onnen, program director of the President’s Council on Physical Fitness and Sports.
    Still exercise’s supporting role in weight reduction is vital. A study at the Boston University Medical Center of overweight police officers and other public employees confirmed that those who dieted without exercise regained almost all their old weight, while those who worked exercise into their daily routine maintained their new weight.
    If you have been sedentary (极少活动的) and decide to start walking one mile a day, the added exercise could burn an extra 100 calories daily. In a year’s time, assuming no increase in food intake, you could lose ten pounds. By increasing the distance of your walks gradually and making other dietary adjustments, you may lose even more weight.

Some people dislike exercise because ______.
选项 A、they think it is physically exhausting
B、they find it hard to exercise while on a diet
C、they don’t think it possible to walk three miles every day
D、they find consulting calorieexpenditure charts troublesome
答案A
解析 推理题。依据在文章第二段"In rejecting exercise，some people may be discouraged too much by calorieexpenditure charts；for example，one would have to briskly walk three miles just to work off the 275 calories in one delicious Danish pastry．”该段指出：在拒绝运动的同时，一些人可能会因热量消耗表的数据而感到极为沮丧。例如；为了消耗掉一个美味的丹麦小甜饼中含有的275卡路里的热量，一个人不得不快走三英里。这说明节食减肥时坚持锻炼是多么的困难，这也是一些人不喜欢运动减肥的原因。选项A与文章意思相符。选项B、C及选项D的内容在文中均没有表述，故排除。
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