单选题According to the author, sleeping habits ______.A are related to the amount of sleepB are inherited from the parentsC vary from person to personD would not change in one’s lifetime

题目

单选题

According to the author, sleeping habits ______.

are related to the amount of sleep

are inherited from the parents

vary from person to person

would not change in one’s lifetime

参考答案和解析

正确答案： A

解析：
文章首段提到Dr. A. Burton认为如果睡眠充足，人们应该在闹钟响前五分钟醒来，并且感到精神抖擞、思维敏捷。而作者却不以为然，认为有些人比其他人惰性大（greater inertia），他们在该睡觉时兴奋，但到该起床时感到困，这与他们应睡多长时间无关，由此可见作者认为睡眠习惯因人而异。故D项正确。

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单选题According to the author, sleeping habits ______.A are related to the amount of sleepB are inherited from the parentsC vary from person to personD would not change in one’s lifetime

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参考答案和解析

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