句型转化:This is 【 my good friend】.(对中括号的内容提问) ( ) is this?
题目
句型转化:This is 【 my good friend】.(对中括号的内容提问) ( ) is this?
It's an English book.(变成一般疑问句)
( ) ( ) an English book
He is a math teacher.(变成否定句)
He ( ) a math teacher.
答案
Who \is it\isn't
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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