Mike and his family lived in Nanjing last year?
题目
Mike and his family lived in Nanjing last year?
对地点提问,Where 后面应该用?
答案
Where did Mike and his family live last year?
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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