简单英语名言警句
题目
简单英语名言警句
50句以上
答案
·All things in their being are good for something.· 天生我才必有用.· Difficult circumstances serve as a textbook of life for people.· 困难坎坷是人们的生活教科书.· Failure is the mother of success...
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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