did you go to school yesterday?如果不是该怎么回答
题目
did you go to school yesterday?如果不是该怎么回答
答案
No,I didn't
如果是以下问法
Didn't you go to school yesterday?
回答
Yes,I did.(我昨天去上学了)
No,I didn't.(我昨天没去上学)
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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