英语作文:Internet and Education 帮写
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英语作文:Internet and Education 帮写
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Education plays a very important role in everyday's life .We go to school becausewe want to know more about the world around us and at the same time extand ourhorizons of thinking.The typical classroo...
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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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