2013高考英语二轮阅读理解强化训练（06）及答案

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Do you find getting up in the morning so difficult that it's painful? This might be called laziness, but Dr Kleitman has a new explanation. He has proved that everyone has a daily energy cycle.

During the hours when you labour through your work you may say that you're "hot". That's true. The time of the day when you feel most energetic is when you cycle of body temperature is at its peak. For some people the peak comes during the forenoon. For others it comes in the afternoon or evening. No one has discovered why this is so, but it leads to such familiar monologues as "Get up, John! You'll be late for work again!"The possible explanation to the trouble is that John is at his temperature-an&energy peak in the evening. Much family quarrelling ends when husbands and wives realise what these energy cycles mean, and which cycle each member of the family has.

You can't change your energy cycle, but you can learn to make your l