题目内容
1.______suggest that students should have 9 hours’ sleep every night.
A. Parents B. Teachers C. Scientists
2.What can cause problems in a student’s study?
A. Quarreling with their parents. B. Arriving late for class.
C. Falling asleep in class.
3.Most students feel nervous and forgetful because ______.
A. they worry about their studies B. they don’t get enough sleep
C. they often get lower grades
4.When should many students go to sleep ?
A. After 12 am. B. Before 11 pm. C. At about 9 pm.
5.Most students go to bed late because ______.
A. there may be too much noise in his room
B. there may be a parent in his room
C. there may be a computer in his room
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