Every day he begins to do his at ten past seven
题目
Every day he begins to do his at ten past seven
Every day he begins to do his at ten past
答案
他每天在7点10分开始工作
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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