单项选择题

The author disagrees with Dr. Burton because______

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

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单项选择题

In the last paragraph the author points out that______

A．sleeping less is good for human development
B．people ought to be persuaded to sleep less than before
C．it is incorrect to say that people sleep too little
D．those who can sleep less should be encouraged

单项选择题

Which of the following statements is NOT true according to the passage

A．New England winters are cold.
B．Some taxi drivers are impolite.
C．The USA is a popular place for tourists.
D．Hotel staff are often sympathetic.