商店里英语对话
题目
商店里英语对话
答案
What can i do for you?
I want to buy a pencil.
Here are a lot of pencils,which one do you like?
I like this blue one,how much is it?
1 yuan.
Ok,I will take it.Here is the money.
Thank you,goodbye.
Goodbye.
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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