填空题

Athletes should avoid certain kinds of supplements, for they may cause side effects which will do harm to the athletes.

【参考答案】

Y

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For a teenager, no matter whether he is all athlete or not, he should take in 2,000 to 5,000 calories per day.

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In the long nm, for an athlete, in order to power his game, he needs a variety of foods which include fats.