根据图中的入射光线或折射光线，分别作出相应的折射光线或入射光线．

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    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 who are tired usually need more sleep. We can get our lessons better and we feel better too when we have a good 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 enough fresh 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 than warm air. Boys and girls who want to grow and be strong must get plenty of sleep.

阅读理解。

    This is asong millions of Americans will hear this New Year's Eve. It is called Auld Lang Syne（《友谊天长地久》）. It is the traditional music played during the New Year's celebration. Auld Lang Syne is an old Scottish poem.It tells about the need to remember old friends.

The words "auld langsyne "mean" old long since". No one knows who wrote the poemfirst. However, a version by Scottish poet Robert Bums was published (出版) in 1796. The words and music we know today first appeared in a songbookthree years later.

    The songis played in the United States mainly on New Year's Eve. The version (译文) you are hearing today is by the Washington Saxophone Quartet.

    As we endour program with Auld Lang Syne. I would like to wish all of our radio friendsa very Happy New Year! This is Buddy Thomas.