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[originaltext] Most people who start working out in hopes of shedding pounds
[originaltext] Most people who start working out in hopes of shedding pounds
游客
2023-07-07
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问题
Most people who start working out in hopes of shedding pounds would be disappointed;(23)many scientists have found that without major changes to diet, exercise typically results in only modest weight loss at best.
(24)To reach that conclusion, the Danish scientists rounded up a group of heavy young men. The volunteers, most in their 20s or early 30s, visited the scientists’ lab to undergo health check. None had high blood pressure or heart disease and, while heavy, they were not obese.
The men were then randomly assigned to exercise or not. The non-exercisers returned to their former routines, with no change to their diets. A second group began 13 weeks of almost daily moderate exercise, consisting of jogging, cycling or otherwise sweating for about 30 minutes. A third group tackled a more intense routine of almost hour-long workouts.
The men were asked not to consciously change their diets, and to keep detailed daily food diaries throughout the 13 weeks. At the end of the 13 weeks, the members of the non-exercise group weighed the same as they had at the start, which is hardly surprising. On the other hand, the men who had exercised the most, working out for 60 minutes a day, had managed to drop some weight, losing an average of five pounds each, about 20 percent less than would have been expected given the number of calories the men were expending each day during exercise.(25)Meanwhile, the volunteers who’d worked out for only 30 minutes a day did considerably better, shedding about seven pounds each.
23. What have many scientists found?
24. What do we learn about the experiment participants?
25. What do we learn about the result of the scientists’ experiment?
选项
A、The most exercised group lost the most of their weight.
B、The non-exercise group lost the least of their weight.
C、The moderately exercised group lost the most of their weight.
D、The three groups almost have no distinction.
答案
C
解析
短文中提到不同组的研究结果不同:既不改变饮食又不运动的组员体重几乎没变;运动量最多即每天运动60分钟的组员平均每人减掉5磅;而每天运动30分钟即运动量居中的组员减重比较理想,平均每人减掉7磅,故答案为C)。
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