I was buying t_____ .F______ I went to a s_____ shop and t_____on some s____new.T____I went to
题目
I was buying t_____ .F______ I went to a s_____ shop and t_____on some s____new.T____I went to
a_____ one and bought a new type of s______.It can sharp the pencils well.
答案
things first small took shoes then another sharpener
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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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