An Important Event in My Life英语作文.很着急,
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An Important Event in My Life英语作文.很着急,
答案
The most important in my life is reading.Reading gives me a lot of knowledge.An excellent book is just like a teacher who is as devoted as a mother.It provides me a peaceful and tranquil soul.I relax ...
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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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