单项选择题
Which of the following is NOT included in the passage?( ) A. If one sleeps inadequately, his performance suffers and his memory is weakened. B. The sleep patterns of short sleepers are exactly the same as those shown by mental patients. C. Long and short sleepers differ in their attitudes towards sleep. D. Short sleepers would be better off with more rest.
Which of the following is NOT included in the passage?( ) A. If one sleeps inadequately, his performance suffers and his memory is weakened. B. The sleep patterns of short sleepers are exactly the same as those shown by mental patients. C. Long and short sleepers differ in their attitudes towards sleep. D. Short sleepers would be better off with more rest.