用A busy day写一篇英语作文
题目
用A busy day写一篇英语作文
答案
A Busy DayThis is very busy today,just like a busy bee.In the morning,I had two seccsions and after that I had a lesson for my IELTS.I don't even have my lunch.There lots of people in my IELTS class a...
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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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