2. 职称英语
  3. 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

游客2023-07-15  72
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] 【S2】
选项
答案 F
解析 此处是解释The key to weight loss(减肥的关键)，activity提示此处应填形容词。下句对此种减肥方法进行了说明：这种减肥方法不需要节食，不需要整天待在健身房里运动，可见这种减肥方法是：有规律地进行身体活动(regular physical activity)，故答案为[F]physical。
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