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

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

admin2010-02-20  50
问题     Exercise is one of the few factors with a positive role in long term 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 caloricexpenditure charts; for example, one would have to briskly walk three miles just to work off the 275 calories in one delicious Danish pastry(小甜饼). Even exercise professionals concede half a point here. "Exercise by itself is a very tough way to lose weight," says 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.
What was confirmed by the Boston University Medical Center’s study?
选项 A、Controlling one’s calorie intake is more important than doing exercise.
B、Even occasional exercise can help reduce weight.
C、Weight reduction is impossible without exercise.
D、One could lose ten pounds in a year’s time if there’s no in crease in food intake.
答案C
解析 细节理解题。第三段第二句话的大意是：一项研究证明，那些节食而不运动的人会恢复过去的体重，而那些将锻炼变成他们日常生活—部分的人则能保持减肥后的体重。而C)正符合此意。所以应选C)。
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