万圣节的英语作文50词
题目
万圣节的英语作文50词
答案
Halloween is for the "All Hallow's Evening". However, due to various reasons, Halloween has become the year's most popular and one of the most popular festivals, and many players with great enthusiasm...
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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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