The sun went down and ___(dark)fell.
题目
The sun went down and ___(dark)fell.
Wall Street is a world-famous trade centre.
As a trade centre,Wall Street is __ __ __ __ __.
New York is the biggest city I have ever visited.
I have ___ ___ ___ ___city than New York
答案
darkness
very famous in the world
never visited a bigger
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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