what is it that are you doing now 的强调句型
题目
what is it that are you doing now 的强调句型
这个写法对吗.还是应该是what is it that you are doing now?
答案
what is it that you are doing now?
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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