THE HOUSE WITH CLOSED SHUTTERS怎么样
题目
THE HOUSE WITH CLOSED SHUTTERS怎么样
答案
A young Civil War soldier loses his nerve and runs from the battlefield.Returning home,he tries to hide and his sister takes his uniform,returns to the battlefield in his place,and dies.Their mother,ashamed of what has happened and trying to hide the truth,seals the shutt
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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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