my vacation plans (英语作文要求who what whom when where howlong)
题目
my vacation plans (英语作文要求who what whom when where howlong)
答案
My plans for this coming summer vacation Summer vacation is coming.So I really want to make a plan for this coming summer vacation.Well,first,I'll take exercise everyday,so that I can keep healthy.Sec...
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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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