Later is better than never.（选最接近的）A.You can do something later,if you like to.B.You can
题目
Later is better than never.（选最接近的）A.You can do something later,if you like to.B.You can
never do something,if you don't like to.C.Doing something is better than doing nothing.
答案
保证是c
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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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