I havent read ( )of his books,but judging from the one I have read,I think he will make a very promi
题目
I havent read ( )of his books,but judging from the one I have read,I think he will make a very promising writer
A.any B.none C.both D.either
答案
C.both ----二者都肯定
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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