There have always been a lot of commonly believed but false ideas about being fat and doing exercise. Some people believe that t

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问题         There have always been a lot of commonly believed but false ideas about being fat and doing exercise. Some people believe that they can’ t help putting on weight as they get older, while others hold that if they stop exercising, their muscles will turn into fat. Here are some more myths:
        I’ll never lose weight—I come from a fat family.
        Wrong! While we can’t change the body type we are born with, we can’t blame our genes for making us fat. There’ s plenty of evidence that fatness runs in families, and the main reason is that they share the same habits of eating too much and exercise too little.
        I am fat because I burn calories slowly.
        Wrong! Fatness is not caused by a slow metabolism(新陈代谢). In fact, although fat people consume more energy than slim people, they also fail to realize how much they eat! Keeping a diary can help you work out your daily food intake more accurately.
        Exercise is boring.
        Wrong! Anything will become boring if you do it repetitively. The key is to develop a balanced and varied program that’s fun as well as progressive. If you enjoy a Sunday walk, take a different route. If you do Yoga, try a tai chi class. If you like swimming, set yourself a distance or time challenge.
        No pain, no gain.
        Wrong! Exercise is not meant to hurt. Indeed, pain is your body telling you something’s wrong, and continuing to exercise could lead to serious injury. You may experience mild discomfort as you begin to exercise regularly, but this is your body adapting to the positive changes in your lifestyle and the aches should disappear relatively quickly. If you don’t, rest and seek medical advice.
What is the purpose of the passage?

选项 A、To declare the importance of keeping fit.
B、To clarify some misconceptions about fatness and exercise.
C、To confirm what has long been believed about keeping fit.
D、To explain some medical facts about being fat and doing exercise.

答案B

解析 此题为主旨大意题。根据文章第一句可知,本文是对人们的一些关于肥胖和锻炼的错误观点的说明。故选B。
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