读下面的故事,
题目
读下面的故事,
I CAN GO HOME
One day,after school the teacher said to his students,"Tomorry morning,if any one of you can answer my first question,I will permit him or her to go home earlier."
The next day,when the teacher came into the classroom,he found the blackboard daubed.(乱涂、乱画)He was very angry and asked,"Who did it?Please tand up!"
"It's me,"said Bob,"Now,I can go home.Gooda—bye,Sir."
1.What did the teacher say to his students one day?
2.Who daubed the blackboard?
答案
Tomorrw morning,if any one of you can answer my first question,I will permit him or her to go home earlier
Bob
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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