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  3. Exercise is one of the few factors with a positive role in longterm maintenance

Exercise is one of the few factors with a positive role in longterm maintenance

游客2023-07-30  32
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.
[br] "Even exercise professionals concede half a point here" (Line 3, Para. 2) means "They ______."
选项 A、agree that the calories in a small piece of pastry can be difficult to work off by exercise
B、partially believe diet plays a supporting role in weight reduction
C、are not fully convinced that dieting can help maintain one’s new weight
D、are not sufficiently informed of the positive role of exercise in losing weight
答案 B
解析 语义理解题。文章第二段提到了concede half a point，在此意思为“承认对方有一定的道理”。 concede一词表明专家说的不是很情愿．下文又引用了这些运动专业人士的话说“仅靠运动来减肥实在太难了。”换句话说，他们认为，应该将“食物减肥和运动减肥结合起来”。因此，我们可以确定选项B“他们部分地认为食物减肥可以起到支持作用”与文中意思相符，为该题正确答案．选项A“认同一小块儿甜饼的卡路里很难通过锻炼消耗掉”是对上句例子的字面解释，不够深刻，不是答案。选项C“并没有完全被说服，认为节食可以保持人的新体重”及选项D对运动在减肥方面的积极作用了解得不多文中没有提及，故排除．
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