Last night grandpa told me an _(usually) story.
题目
Last night grandpa told me an _(usually) story.
Would you like to show us you _(collect)?
Traffic means the _(move) of cars and bicycles.
答案
Last night grandpa told me an (usual) story.
Would you like to show us you (collection)?
Traffic means the (moving) of cars and bicycles.
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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