精选优质文档-倾情为你奉上一:阅读理解 ADuring 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. Our bodies grow most while we are asleep. Children usually need more sleep than adults. They can learn their lessons better after they have had plenty of rest. Boys and girls who are eight or nine years old need ten hours of sleep every night. Our bodies need plenty of air when we sleep. If we do not get