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2023-07-20  43
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] 【S1】
选项
答案 K
解析 此处缺状语从句的谓语，而found提示此处皮填过去式动词，故[I]participated和[K]started入选。participate“参加”后常接in，且与此处语义不符，故排除。[K]started(开始)符合语义，故为答案。此甸甸意为：你可能已经试过一两种流行的节食减肥方法，但发现自己最后又回到原来的状态。
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