During the day we work and play; at night we sleep. Our bodies rest while we sleep. In the

During the day we work and play; at night we sleep. Our bodies rest while we sleep. In the morning we are ready to work and play again. While we are asleep our bodies grow most. Children usually need more sleep. We can get our lessons better and we feel better too, when we have plenty of rest. Boys and girls need ten hours of sleep every night when they are eight or nine years old. Our bodies need lots of air when we sleep. If we do not get enough fresh（新鲜的）air we’ll feel tired when we wake up. While in bed we must not cover our heads. If we do, our lungs（肺）will not get enough fresh air. If we open our windows at night we can have plenty of fresh air. Cool air is better then warm air. Boys and girls must get enough sleep if they want to grow and be strong.
【小题1】 Our bodies grow most while we are .A．eatingB．playingC．sleepingD．waking【小题2】 Which is the best air for us?A．fresh airB．Cool airC．Warm airD．Dry air【小题3】 Too little sleep makes us .A．nappyB．hungryC．tiredD．grow【小题4】How much sleep should boys and girls of nine years old have every night?A．Eight hoursB．Nine hoursC．Ten hoursD．Seven hours【小题5】What do the lungs need most?A．Fresh airB．FoodC．RestD．ExerciseC

(答案→)C 解析：白天我们工作和娱乐。在晚上我们睡觉。我们睡觉时我们的身体也在休息。第二天早上，我们又开始准备工作和娱乐。虽然我们都睡着了，我们的身体成长。儿童通常需要更多的睡眠。我们可以更好地得到教训，我们感觉更好了，当我们有充足的休息。八或九岁的男孩和女孩每天晚上需要十几个小时的睡眠。我们的身体需要大量的空气，当我们睡觉。如果我们没有得到足够的新鲜空气，我们醒来的时候，会觉得累。而在床上，我们不能掩盖我们的头上。如果我们这样做，我们的肺不会得到足够的新鲜空气。如果我们打开了我们的窗户，晚上我们可以有充足的新鲜空气。凉爽的空气是更好然后暖空气。如果他们要成长，要坚强。男孩和女孩就必须得到足够的睡眠。【小题1】细节理解题，根据文中语句“While we are asleep our bodies grow most.”理解可知。当我们睡觉的时时候，身体长得非常快，故选C。【小题2】细节理解题，根据文中语句“If we do not get enough fresh（新鲜的）air we’ll feel tired when we wake up.”理解可知。新鲜空气是非常重要的，故选B。【小题3】理解题归纳，根据文中语句理解可知，没有充足的休息我们会感到非常的疲劳，故选C。【小题4】细节理解题，根据文中语句“Boys and girls need ten hours of sleep every night when they are eight or nine years old.”理解可知。小朋友每天需要至少10小时的睡眠时间，故选C。【小题5】细节理解题，根据文中语句“Our bodies need lots of air when we sleep. I”理解可知。肺需要大量的新鲜空气，故选A。

就是这个解释