changes in china 演讲3分钟
题目
changes in china 演讲3分钟
答案
Now I will show some tips about changes in China to you:1.\x05In China's shift to a market economy,one key marriage player has been phased out:the work-unit boss.For 50 years,the boss was a de facto s...
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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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