九年级新目标英语14页3B怎么写
题目
九年级新目标英语14页3B怎么写
答案
My Life has changed a lot in the last few years.My daily life is different and I used to like different things when I was a child.For example,my English is poor when I was a primary school student.But...
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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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