短文填空 We are C__.We live in C__.Our f__ is
题目
短文填空 We are C__.We live in C__.Our f__ is
短文填空
We are C__.We live in C__.Our f__ is red.And it has five yellow s__ of the country.It is in the n__ of China.Now it' s very well–known.Because the twenty–ninth Olympic Games were held in Beijing.We l__ our country will be better（更好）.
答案
China cities flag stars north
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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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