tough time would not be last,but tough person would be.
题目
tough time would not be last,but tough person would be.
答案
圣经里有一句话：tough time would not be last,but tough person would be.艰难的时刻不会永久,但坚强的人格会永恒.
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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