每天摘抄100字英语优美段落,求正常一点的,
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每天摘抄100字英语优美段落,求正常一点的,
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don't know what I do now is right, those are wrong, and when I finally Laosi when I know these. So I can do now is to try to do well in everything,&nb...
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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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