2019高考英语阅读理解分析：科技类(11)

2019-04-01 14:00:00来源：网络

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2019高考英语阅读理解分析：科技类(11)

　　Suppose we built a robot to explore the planet Mars. We provide the robot with seeing detectors(探测器) to keep it away from danger. It is powered entirely by the sun. Should we program the robot to be equally active at all times? No, the robot would be using up energy at a time when it was not receiving any. So we would probably program it to stop its activity at night and to wake up at dawn the next morning.

　　According to evolutionary(进化的) theory of sleep, evolution equipped us with a regular pattern of sleeping and waking for the same reason. The theory does not deny that sleep provides some important restorative functions. It merely says that evolution has programmed us to perform those functions at a time when activity would be inefficient and possibly dangerous. However, sleep protects us only from the sort of trouble we might walk into; it does not protect us from trouble that comes looking for us. So we sleep well when we are in a familiar, safe place, but we sleep lightly, if at all, when we fear that bears will nose into the tent.

　　The evolutionary theory explain the differences in sleep among creatures. Why do cats, for instance, sleep so much, while horses sleep so little? Surely cats do not need five times as much repair and restoration as horses do. But cats can afford to have long periods of inactivity because they spend little time eating and are unlikely to be attacked while they sleep. Horses must spend almost all their waking hours eating, because what they eat is very low in energy value. Moreover, they cannot afford to sleep too long or too deeply, because their survival depends on their ability to run away from attackers.

　　1. The author uses the example of the robot in space exploration to tell us _______.

　　A. the differences between robots and men

　　B. the reason why men need to sleep

　　C. about the need for robots to save power

　　D. about the danger of men working at night

　　2. Evolution has programmed man to sleep at night chiefly to help him ______.

　　A. keep up a regular pattern of life

　　B. prevent trouble that comes looking for him

　　C. avoid danger and inefficient labor

　　D. restore his bodily functions

　　3. Which of the following is the main idea of the passage?

　　A. Evolution has equipped all creatures with a regular pattern of sleeping and waking.

　　B. The study of sleep is an important art of the evolutionary theory.

　　C. Sleeping patterns must be taken into consideration in the designing of robots.

　　D. The sleeping pattern of a living creature is determined by the food it eats.

　　本文介绍了有关睡觉进化论方面的知识。

　　1. B。推断题。根据文章第2段第1句evolution equipped us with a regular pattern of sleeping and waking for the same reason可推知此题答案为B。

　　2. C。推断题。根据文章第2段第3句when activity would be inefficient and possibly dangerous可推知此题答案为C。

　　3. A。推断题。根据文章第2段第1句和第3段第1句可推知此题答案为 A。

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