This is 1 Japanese girl. 2 name is Becky. 3 is eleven. She is now in China. She is 4 NO.9 Middle Sc
题目
This is 1 Japanese girl. 2 name is Becky. 3 is eleven. She is now in China. She is 4 NO.9 Middle Sc
答案
1,a
2,Her
3,She
4,in
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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