which book do you like best?what’s the matter with you?where do they come from?它们的同一句
题目
which book do you like best?what’s the matter with you?where do they come from?它们的同一句
答案
What's your favourite book?
What's wrong with you?
Where are they from?
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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