Tom often asks the same qustion
题目
Tom often asks the same qustion
变一般疑问句(做肯定回答).变否定句
答案
Does Tom often ask the same qustion?
Yes,he does.
Tom doesn't often ask the same qustion.
或Tom seldom asks the same question.
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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