请用英文介绍一下杰克伦敦
题目
请用英文介绍一下杰克伦敦
答案
John Griffith "Jack" London was an American author,journalist,and social activist.He was a pioneer in the then-burgeoning world of commercial magazine fiction and was one of the first fiction writers ...
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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