英文自我介绍80词
题目
英文自我介绍80词
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My name is XXX. I was born in XXX. I'm XX years old now and I'm studying in XX Primary School. My father is a XX (工作). He works in /at XX (地方). My mother is a XX (工作) and she works in /at XX (...
举一反三
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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