mom and pop
题目
mom and pop
I like to buy milk and water at the little mom and pop store near my house because it is convenient and the owners are nice to their customer
答案
mom and pop store [stand]
[美]夫妻店,家庭经营的小零售店[小摊]
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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