school life in winter
题目
school life in winter
至少五句,
答案
We have a wonderful school life in winter.When it snows,we often make a snowman in the playgroud on P.E.lessons.Sometimes,it's very cold outside.We can read in the library and enjoy ourselves.We needn't think about anything unhappy.I like the school life very much.
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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