求作文,today is your birthday,my motherland
题目
求作文,today is your birthday,my motherland
答案
Today is your birthday,my dear motherland.In the morning when I opened the window,I found the bright five-star red flag fluttering in the wind,signifying the brilliant achievements made in the last 60...
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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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