科目：初中英語 來源： 題型：
During the day we work and play, and at night we sleep. Our body rests while we sleep. In the morning we are ready to work and play again. Our body grows most while we are asleep. Children who are tired usually need sleep. We can get better at our lessons after we have had plenty of rest. Boys and girls who are eight or nine years old need ten hours of sleep every night. Our body needs plenty of air when we sleep. If we do not get enough fresh（新鮮的） air, we will feel tired when we wake up. While in bed we must not cover our head. Our lung(肺) needs to get enough fresh air. If we open our windows at night, we can have plenty of fresh air. Cool air is better than warm air. Boys and girls who want to be strong must get plenty of sleep.
1. Our body grows most while we are .
A. eating B. playing C. sleeping D. exercising
2. Too little sleep makes us .
A. tired B. hungry C. happy D. grow
3. What may cause (促使) us to feel tired in the morning?
A. Too much air during the sleep. B. Not enough fresh air during the sleep.
C. Too much cold air during the sleep. D. Too much sleep during the sleep.
4. How many hours of sleep should 9-year-old children have?
A. 8 hours B. 9 hours C. 10 hours D. 11 hours
5. What doe s the lung need most?
A. Fresh air. B. Covering. C. Warm air. D. Exercise.
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