Passage Two The thought of not sleeping for twenty-four hours o

Passage Two The thought of not sleeping for twenty-four hours or more is not a pleasant one for most people．The amount of sleep that each person needs varies．In general,each of us needs about eight hours of sleep each day to keep our bodies healthy and happy．Some people,however,can get by just a few hours of sleep at night． It doesn't matter when or how much a person sleeps．But everyone needs some rest to stay alive．Few doctors would have thought that there might be an exception on this．Sleep is,after all,a very basic need．But a man named AI Herpin turned out to be a real exception,for supposedly,he never slept! A1 Herpin was 90 years old when doctors came to his home in New Jersey．They hoped to negate the claims that he never slept．But they were surprised．Though they watched him every hour of the day,they never saw Herpin sleeping．He did not even own a bed．He never needed one． The closest that Herpin came to resting was to sit in a rocking chair and read a half dozen news-papers．His doctors were baffled by this strange case of permanent insomnia．Herpin offered the only clue to his condition．He remembered some talk about his mother having been injured several days be-fore he had been born．Herpin died at the age of 94,never having slept a wink． A1 Herpin's condition could be regarded as______
A、normal
B、curable
C、healthful
D、rare
【正确答案】：D
【题目解析】：在给出的文章中，描述了一个名为AI Herpin的人，他声称自己从未睡过觉，并且医生在观察他时也未能发现他睡觉的情况。这种情况在医学和日常生活中都是极为罕见的。 A选项“normal”表示正常，但根据文章内容，AI Herpin的情况显然不是正常的，因为他从未睡觉。 B选项“curable”表示可治疗的，但文章中并没有提到AI Herpin的情况是可以治疗的，只是描述了他的异常现象。 C选项“healthful”表示健康的，然而AI Herpin虽然活了很长时间且未睡觉，但这并不直接说明他的健康状态，而且不睡觉通常不被认为是健康的。 D选项“rare”表示罕见的，这与AI Herpin的情况相符，因为他在一生中从未睡觉，这在医学和生活中都是极为罕见的。 因此，正确答案是D，即AI Herpin的情况可以被认为是罕见的。