课外阅读。

       天鹅湖是个圆形的湖，湖水清可见底，碧绿发口粮，好像一块无暇的翡翠。湖的四周是郁郁葱葱的树木，其中最引人注目的是低垂着头的柳树。她在微风吹动下，舒展着柔软的腰肢，拂动着细长的手臂，迎风起舞。树下是一片嫩绿的草地，草地上零零星星缀着红的、黄的、蓝的小野花，远远看去就像缀着绿色图案的绿缎子。湖上横跨着一座美丽的天鹅桥，就像一根腰带系在那里，把天鹅湖打扮得更加美丽。

计算：$\frac{a^2}{a-b}$-$\frac{b^2-2ab}{b-a}$

阅读理解

    My name is Sun Liang．Li Feng is my cousin．He is thirteen years old and I'm twelve years old．We study in the same school but not in the same grade．He is in Grade 8 and I'm in Grade 7．

    Li Feng is tall and strong．He plays basketball well．He thinks it's a good way to stay healthy．So he often plays basketball with his classmates in the playground．He likes collecting the pictures of famous basketball players．Last Sunday,he watched a basketball match．He was happy because he saw his favourite basketball star．

    I also like playing sports but music is my favourite．I think it's a good way to relax after a busy day．My father is a music teacher and he is good at playing the piano．So I learn from him to play the piano．It was my birthday yesterday．I had a party and I was happy．

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