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 air, we will feel tired when we wake up. While in bed we must not cover our head.Our lungs need 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 enough and plenty of sleep.
【小题1】Our body grows most while we are.A．eatingB．playingC．sleepingD．exercising【小题2】Too little sleep makes usA．tiredB．hungryC．happyD．grow【小题3】.What may cause us to feel tired in the morning?A．Too much airB．Not enough fresh airC．Too much cold airD．Too much sleep【小题4】How many hours of sleep should nine-year-old children have ?A．Eight hoursB．Nine hoursC．Ten hoursD．Eleven hours【小题5】What does the lung need most ?A．Fresh airB．CoveringC．Warm airD．ExerciseC
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(答案→)C
解析：这篇短文主要讲述了睡眠对于我们的重要性，尤其是睡眠对于小孩子的重要性。并且解释了睡眠时需要注意的一些问题。
【小题1】根据Our body grows most while we are asleep.描述可知选C。
【小题2】根据If we do not get enough fresh air, we will feel tired when we wake up.及上文描述可知如果睡眠不足可导致劳累，故选A。
【小题3】根据If we do not get enough fresh air, we will feel tired when we wake up.可知选B。
【小题4】根据Boys and girls who are eight or nine years old need ten hours of sleep every night.描述可知选C。
【小题5】根据Our lungs need to get enough fresh air.描述可知选A。