you had better find someone else to go with
题目
you had better find someone else to go with
nancy is too sick to go to the concert
答案
你最好是找别人陪你去 南茜病了不能去演奏会
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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