Beijing is c___every day and it is becoming more and more beautiful.
题目
Beijing is c___every day and it is becoming more and more beautiful.
Beijing is very clean and q_____and most people../........
答案
changing
译文:北京每天都在发生变化,它变得越来越美丽了.
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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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