Do you know how much your children sleep?
According to the National Sleep Foundation,
should sleep twelve to eighteen hours
of every twenty-four. With a gradual
to twelve to fourteen hours for toddlers(初学走路的孩子) one to three; eleven to thirteen hours for
three to five; and ten to eleven hours for schoolchildren
five to ten.
But things get really
at adolescence. Not only do teenagers need more sleep than
__---eight and a half to nine and a quarter hours a night, according to the sleep foundation - but the times
which they get sleepy and are able to awaken
and feel rested shift in a
that does not match to the
times at most schools.
Sleep studies have shown that the typical teenager does not fall asleep readily before 11 p. m. or later.
many have to get up by 6 a. m. or
to get to school for a class
starts at 7:30 or 8 a.m. More than a few
off during that class, and often the
one as well. Even if awake, they're in no condition to learn much of anything.
In one study, more than 90 percent of teenagers
they slept less than the
nine hours a night, and 10 percent said they slept less than six hours.
_ James B. Maas, a Cornell University psychologist and Leading sleep researcher, has observed, most teenagers are "walking zombies(僵尸)"
they get far too little sleep.
| 小题1: | | A．children | B．newborns | C．elders | D．youngsters |
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| 小题3: | | A．reduction | B．increase | C．growth | D．improvement |
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| 小题4: | | A．teenagers | B．students | C．babies | D．preschoolers |
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| 小题5: | | A．related | B．separated | C．aged | D．varied |
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| 小题6: | | A．demanding | B．challenging | C．satisfying | D．encouraging |
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| 小题7: | | A．adults | B．toddlers | C．babies | D．schoolchildren |
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| 小题9: | | A．excitedly | B．early | C．casually | D．naturally |
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| 小题10: | | A．form | B．means | C．method | D．way |
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| 小题11: | | A．end | B．start | C．holiday | D．examination |
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| 小题13: | | A．nicer | B．earlier | C．cleaner | D．better |
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| 小题17: | | A．examined | B．surveyed | C．reported | D．convinced |
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| 小题18: | | A．regulated | B．recommended | C．analyzed | D．reported |
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| 小题19: | | A．Like | B．Since | C．As | D．Furthermore |
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| 小题20: | | A．because | B．which | C．while | D．still |
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