Lin Hai,A computer game is in the school library.Is it yours?Ask the teacher for it.Mike
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Lin Hai,A computer game is in the school library.Is it yours?Ask the teacher for it.Mike
ls this your watch?My phone number is 495-3539.Call me.
John翻译成中文
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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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