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6．What is the man's favorite activity？
A．Watching TV
B．Reading a book
C．Listening to music．

分析 略

解答 略

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16．Whee does the conversation probably take place？
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17．If there was ever a study not to lose sleep over，it's this one．People deprived（剝奪） of a good night's rest are more likely to experience changes in brain activity that can increase the urge to eat high-calorie foods．
Matthew Walker at the University of California in Berkeley and his colleagues conducted the first study of brain activity in relation to food among sleep-deprived people．The team studied brain patterns in 23people，first after a night of peaceful sleep and then after a night without sleep．
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It may make evolutionary（進(jìn)化的） sense，says Laurent Brondel at the University of Burgundy in Dijon，F(xiàn)rance．The long summer days at higher latitudes（緯度） deprive animals of sleep，but they use their time awake to eat more，which helps them get through the short days of winter when there is not enough food．
That's only part of the story，though，says Stephanie Greer，another member of the team．The body does need more energy if someone remains awake for longer-but the high-calorie foods that become more desirable after sleep deprivation would more than meet this additional need．The changes in food desirability encouraged by the sleep-deprived brain may originally have been an important adaptation but today they no longer benefit our health．
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