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Perhaps like most Americans you have some extra pounds to shed. You may even
Perhaps like most Americans you have some extra pounds to shed. You may even
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2023-07-15
71
管理
问题
Perhaps like most Americans you have some extra pounds to shed. You may even have tried a fad (时尚) diet or two, but found yourself right back where you【S1】______. The key to weight loss is regular【S2】______activity. And surprisingly, you don’t have to give up eating or make the gym your second home to see long-term,【S3】______effects.
Your body needs a certain amount of energy to maintain basic【S4】______such as breathing, blood circulation and digestion. The energy required to keep your organs functioning is referred to as the resting or basal metabolic rate. Any time you are active,【S5】______energy is required. It is obtained from glycogen (糖原) and fat stored in the blood, liver, and muscles. The key to losing weight is to draw on the fat rather than on the carbohydrate reserves.
Which of the two energy sources you use depends on the intensity and【S6】______of your activity. The higher the intensity, the more your body will pull from the stored carbohydrates. The lower the intensity, the【S7】______your body will rely on fat as its fuel.
Aerobic exercise is most【S8】______for weight loss. When you perform aerobic activities you【S9】______contract large muscle groups such as your legs and arms. Walking, running, rollerblading, swimming, dancing, and jumping jacks are all forms of aerobic activity. Surprisingly, if your aerobic activity is low to moderately intense and of long duration, you will burn more fat than if you had【S10】______in a short burst of high-intensity exercise. In short, a brisk 30-minute walk will burn fat while a 100-yard sprint will burn glycogen.
[A] positive [F] physical [K] started
[B] additional [G] activities [L] repeatedly
[C] duration [H] functions [M] less
[D] effective [I] participated [N] amount
[E] more [J] efficient [O] obviously [br] 【S3】
选项
答案
A
解析
空格后的名词effects(效果)表明,此处应填与long—term并列的原形形容词,故[A]positive、[B]additional、[D]effective和[J]efficient入选。[B]additional(额外的)用在此处不符合句意;[D]effective(有效的)与effects词义发生重复;[J]efficient(效率高的)不能修饰effects。只有[A]positive(积极的)能与effects搭配使用,且符合句意。此句意为:这种减肥方法不用通过节食和整天待在健身房里运动来达到长期、积极的效果。
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