Welcome to the exhibition ( ) high-tech products.
题目
Welcome to the exhibition ( ) high-tech products.
A of B for C about D on
答案
China's first exhibition of modern ceramics.
首届中国现代陶艺展.
He proposed an exhibition of works of art.
他提议举办美术展览会.
选A
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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