用英文介绍几位体育明星.
题目
用英文介绍几位体育明星.
最好有林丹
答案
Lin Dan (simplified Chinese:林丹; pinyin:Lin Dan) (born October 14,1983) is a men's singles badminton player from Fujian,the People's Republic of China.Lin is currently the most dominant singles playe...
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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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