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  3. The average person swallows about half a ton of food a year—not counting drink—and though the body is remarkably efficient at ex

The average person swallows about half a ton of food a year—not counting drink—and though the body is remarkably efficient at ex

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问题    The average person swallows about half a ton of food a year—not counting drink—and though the body is remarkably efficient at extracting just what it needs from this huge mixture, it can only cope up to a point. If you go on eating too many of some things and not enough of others, you’ll eventually get out of condition and your health will suffer. So think before you start eating. It may look good. It may taste good. Fine! But how much good is it really doing you?
   What you eat and the way it affects your body depend very much on the kind of person you are. For one thing, the genes you inherit from your parents can determine how your body metabolism(新陈代谢) copes with particular foods. The tendency to put on weight rather easily, for example, often runs in the family—which means that they have to take particular care.
   And your parents may shape your future in another way. The way you are brought up shapes some basic attitudes to food—like whether you have a sweet tooth, nibble between meals, take big mouthfuls or eat chips with everything. Eating habits, good or bad, tend to get passed on.
   And then there is your lifestyle. How much you spend on food (time as well as money) , how much exercise you get—these can alter the balance between food and fitness.
   And finally, both your age and your sex may affect this balance. For example, you’ re more likely to put on weight as you get older, especially if you’ re a woman.
   So everybody is different and the important thing is to know yourself.
What conclusion can we draw from this passage?
选项 A、People need a standard to guide their eating.
B、Proper eating is the key to one’ s health.
C、Women should pay more attention to what they eat.
D、The balance between food and fitness is hard to maintain.
答案B
解析 根据第一段第二句“If you go on eating too many of some things and not enough of others，you’ll eventually get out of condition and your health will suffer．”可知， 如果你过度食用某些食物而对其他食物摄人不足，最终会导致身体状况不佳，影响健 康。由此可推知，合理饮食对于身体健康很重要，它是保持健康的关键。故选B。
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