I like winter 80字 英语作文 明天要交了!
题目
I like winter 80字 英语作文 明天要交了!
答案
I often go to see my grandma and grandpa during winter vacation.They are both seventy years old and live in the country happily.I can do many interesting things there.I am used to getting up early in ...
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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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