大学英语四级选词填空模拟题.pdf

第一篇 关于减肥 Perhaps like most Americans you have some extra pounds to 47 . You may even have tried a fad diet or two, but found yourself right back where you started. The key to weight loss is regular 48 activity. And surprisingly, you dont have to give up eating or make the gym your second home to see long-term, 49 effects. You body needs a certain amount of energy to maintain basic 50 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, 51 energy is required. It is obtained from glycogen 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 52 of your activity. The higher the intensity, the more your body will pull from the stored carbohydrates. The lower the intensity, the more your body will 53 on fat as its fuel. Aerobic exercise is most 54 for weight loss. When you perform aerobic activities you 55 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 56 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[B] additional[C] duration[D] effective [E] shed [F] physical [G] food [H] functions [I] participated [J] rely [K] cut [L] repeatedly [M] uses [N] little [O] obvious 47. E 该空需填入动词原形，结合原意 “和大多数美国人一梯状，你 ( 的体重 )可能也有几磅需 要____ ____”可知， E(去除 )最符合文意。 48. F 结合常识和下文可知， F 最符合文意。 49. A 结合句意 “令人惊奇的是， 为了看到长期