Experts say that students usually need eight to ten hours' sleep at night, but most Chinese students do not get enough sleep. Some Chinese parents are usually glad to see their children studying late. They will think their children work very hard, but not all parents are happy about this. Once a mother told us that every morning her 10-year-old boy put up one finger with his eyes still closed, begging(请求) for one more minute to sleep. Like thousands of students "early birds" in China, he has to get up before six every morning.
A report shows that without a good night sleep, students seem to be weaker(虚 弱) than they should be. Many students have fallen asleep during class at one time or another. Too much homework is not the only reason why students stay up late. Some watch TV or play the computer games late into the night.
Experts have ever said that the students should develop good study habits. So some clever students never study late, and they are able to work well in class.
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（1）
The l0-year-old boy begged for one more minute to sleep because ____.
A . he didn't want to go to school
B . it wasn't time for him to get up
C . he didn't have enough sleep
D . he wanted his mother to wake him up
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（2）
In this passage we know if students don't get enough sleep, they may ____.
A . not work well in class
B . go to bed early
C . be weak in English
D . become too weak to sleep
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（3）
In this passage "early birds" means "persons who ____"
A . don't want to sleep
B . get up late
C . get up early
D . sleep less
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（4）
How many hours should students sleep at night in experts'opinion?
A . Less than 6 hours
B . 8 to 10 hours
C . 6 to 8 hours
D . over 10 hours
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（5）
According to the passage, which of the following is RIGHT?.
A . If you want to study better, you must work hard at night.
B . Some clever students are able to work well in class because they have good study habits.
C . Students don't have enough sleep because they have lots of homework to do.
D . Sleeping less means working hard.
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