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  3. More than 45 million Americans now belong to a health club. We spend some $19 billion a year on gym memberships. Of course, some

More than 45 million Americans now belong to a health club. We spend some $19 billion a year on gym memberships. Of course, some

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问题     More than 45 million Americans now belong to a health club. We spend some $19 billion a year on gym memberships. Of course, some people join and never go.
    According to a survey, the number of people who said they【C1】______regular exercise, has been rising. And yet obesity【C2】______have risen significantly: a third of Americans are obese, and another third【C3】______as overweight by the Federal Government’s【C4】______. Yes, it’s entirely possible that those of us who regularly go to the gym would weigh even more if we exercised【C5】______. But like many other people, I get hungry after I exercise,【C6】______I often eat more on the days I work out than on the days I don’t. Could exercise actually be keeping me from losing weight?
    The【C7】______wisdom that exercise is essential for shedding pounds is actually fairly【C8】______. As recently as the 1960s, doctors routinely advised against【C9】______exercise, particularly for older adults who could【C10】______themselves. Today doctors encourage even their oldest patients to exercise, which is sound advice for many reasons: People who regularly exercise are at significantly lower risk for all manner of【C11】______—those of the heart in particular. They less often develop cancer, diabetes and many other illnesses. But the past few years of obesity research show that the role of exercise in weight loss has been wildly【C12】______.
    "In general, for weight loss, exercise is pretty【C13】______," says Eric Ravussin, chair in diabetes and metabolism at Louisiana State University and a prominent exercise researcher. Many recent studies have found that exercise isn’t as important【C14】______helping people lose weight as you hear so regularly in gym advertisements or on【C15】______like The Biggest Loser.
    The basic problem is that【C16】______it’s true that exercise burns calories and that you must burn calories to lose weight, exercise has another effect: it can【C17】______hunger. That causes us to eat more, which【C18】______can deny the weight-loss benefits we just【C19】______. Exercise, in other words, isn’t necessarily helping us lose weight. It may even be making it【C20】______.
【C17】
选项 A、promote
B、stimulate
C、ascend
D、facilitate
答案B
解析 上文提到运动可以燃烧热量进而减肥，another effect(另一个效果)谈到运动与饥饿的关系。下文说，运动使我们吃得更多。可见运动刺激了饥饿感。故选B项stimulate，指对感觉、兴趣的刺激或激励某人做某事。
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