英语暑假手抄报的内容
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英语暑假手抄报的内容
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英语短文 A School-report The father was reading the school-report which had just been handed to him by his hopeful son.His brow was wrathful as he read:"English,poor,French,weak,mathematics,mathematic...
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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