假设你是李华Tim是你笔友一直希望来中国教英语得直前进中学需要老师写信相关情况1
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假设你是李华Tim是你笔友一直希望来中国教英语得直前进中学需要老师写信相关情况1
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Dear Tom I am very happy to hear from you. Welcome to chinese teaching english. Recently, I heard from my friends that the Qian Jin Middle School need an english teacher.I asked him for the specifi...
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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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