I want to fly to、、、
题目
I want to fly to、、、
I want to fly to ...(题目自拟)
答案
l want to fly in the sky. l can have a look at how big the pacific ocean is. l want to fly in the sky. l can have a look at how many rivers in the world. l want to fly in the sky. l can have a look 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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