2. 外语
  3. 1　　There must be few questions on which responsible opinion is so utterly divided as on that of how much sleep we ought to have.

1　　There must be few questions on which responsible opinion is so utterly divided as on that of how much sleep we ought to have.

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问题 1　　There must be few questions on which responsible opinion is so utterly divided as on that of how much sleep we ought to have. There are some who think we can leave the body to regulate these matters for itself. "The answer is easy,"　says Dr. A. Burton. "With the right amount of sleep you should wake up fresh and alert five minutes before the alarm rings." If he is right many people must be undersleeping, including myself. But we must remember that some people have a greater inertia than others. This is not meant rudely. They switch on slowly, and they are reluctant to switch off. They are alert at bedtime and sleepy when it is time to get up, and this may have nothing to do with how fatigued their bodies are, or how much sleep they must take to lose their fatigue.
2　　Other people feel sure that the present trend is towards too little sleep. To quote one medical opinion, "Thousands of people drift through life suffering from the effects of too little sleep;the reason is not that they can’t sleep." Like advancing colonists, we do seem to be grasping ever more of the land of sleep for our waking needs, pushing the boundary back and reaching, apparently, for a point in our evolution where we will sleep no more. This in itself, of course, need not be a bad thing. What could be disastrous, however, is that we should press too quickly towards this goal, sacrificing sleep only to gain more time in which to jeopardize our civilization by actions and decisions made weak by fatigue.
3　　Then, to complete the picture, there are those who believe that most people are persuaded to sleep too much. Dr H. Roberts, writing in Every Man in Health, asserts:"It may safely be stated that, just as the majority eat too much, so the majority sleep too much. "One can see the point of this also. It would be a pity to retard our development by holding back those people who are gifted enough to work and play well with less than the average amount of sleep, if indeed it does them no harm. If one of the trends of evolution is that more of the life span is to be spent in gainful waking activity, then surely these people are in the van of this advance.  
The author disagrees with Dr．Burton because______.
选项 A、few people can wake up feeling fresh and alert.
B、some people still feel tired with enough sleep.
C、some people still feel sleepy with enough sleep.
D、some people go to bed very late at night.
答案D
解析 此题为细节理解题。据第1段第4-9句，Dr．Burton认为，人的身体可以自我调节睡眠质量，只要睡眠适量，人会自然醒来，而且会感到很清醒。但作者认为实际情况并非如此，因为一些人晚上睡得很晚，在通常睡眠时间时头脑很清醒，而第二天早上起来时却很瞌睡，而这与他们身体是否疲劳或需要多少睡眠才会消除疲劳无关。如果按照Dr． Burdon的观点，那些熬夜的人由于醒来时感到疲劳或瞌睡就一定是睡眠不足，而按作者的观点，他们并不是缺少睡眠，而只是一个生活习惯问题。故可确定D，A显然与常识不符。B与C虽然是常见现象，但不是作
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