以 what do you like to do in summer 为题 写一篇50词作文
题目
以 what do you like to do in summer 为题 写一篇50词作文
答案
There are four seasons in a year .I like summer best .I like summer because I can go swimming in the swimming pool .I can also have a summer holiday .When we have our summer holiday ,I will stay at ho...
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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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