every evening after work the man would come home and play with the little boy.
题目
every evening after work the man would come home and play with the little boy.
答案
每天晚上工作完以后他就会回家和小男孩玩
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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