2. 外语
  3. The author thinks sleep is a funny thing as it is necessary for human life. According to some theory, we only need breakfast, l

The author thinks sleep is a funny thing as it is necessary for human life. According to some theory, we only need breakfast, l

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问题 The author thinks sleep is a funny thing as it is necessary for human life.
According to some theory, we only need breakfast, lunch and supper every day but no more because while sleeping, we can consume ______.
选项
答案less energy
解析 第5个小标题Why Sleep?部分的第3点第1句：Sleep lowers our energy consumption，so we need three meals a day rather than four or five．空白处需要名词性成分。题目中because引导的是原因状语从句，because之前的部分表结果；而文中so引导的是结果状语从句，so之前的部分表原因。因此题目将原文的因果关系加以颠倒了。值得注意的是，原文中的 consumption是题目空白前动词consume的名词形式，故需把原文中的动词短语lower energy同义转换成名词短语后充当consume的宾语，答案为less energy。
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