阅读理解
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.
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.
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.
单选题
The author disagrees with Dr. Burton because_______.
【正确答案】
C
【答案解析】文章第一段陈述了Dr.Burton的观点With the right amount of sleep you should wake up fresh and alert five minutes before the alarm rings，作者随即反驳说If he is right many people must be undersleeping。由此推断，作者认为许多人即使睡眠时间足够，当起床的时候，还是会犯困。
单选题
In the last paragraph the author points out that_______.
【正确答案】
D
【答案解析】由文章最后两句话…It would be a pity to retard our development by holding back those people who are gifted enough to…可知，作者认为阻止那些睡眠少的人投入工作会妨碍其发展，所以应该鼓励他们投入工作。D)中的encouraged与文中的be a pity to retard是同义转述。
单选题
We learn from the passage that the author_______.
【正确答案】
A
【答案解析】文章分别叙述了三种观点：第一个是With the fight amount of sleep you should wake up fresh and alert five minutes before the alarm rings，第二个是the present trend is towards too little sleep，第三个是most people are persuaded to sleep too much。所以作者在文章中分别评论了这三种观点，并没有提出自己的完整观点。