But forms of address reveal many assumptions we make about members of our speech community
题目
But forms of address reveal many assumptions we make about members of our speech community
答案
但是称谓的形式表明了我们对彼此身份的设定
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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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