用英语写一下寒假里自己每天是如何度过的.
题目
用英语写一下寒假里自己每天是如何度过的.
答案
I have got a happy winter holiday this year.In this year,I have a 7-day winter holiday.In the first day,I went back to my hometown with my parents.When I got there,I saw my grandparents.Then we had lu...
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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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