英语翻译
题目
英语翻译
One evening ,Daisy said,“I’m going to buy a packet of sweets.Does anyone want anything?” Benny,Daisy’s brother,replied,“Can you get me a packet of electricity?” “Yes,I can,” said Daisy.Then she went out.Benny laughed ,”She can’t buy electricity in packets like sweets!She ’ll look foolish.” Mum said,”You mustn’t say that,Benny!” “What do you know about electricity,Benny?”Dad asked.“Electicity gives us power.It flows through wires.It’s like water,in a way.”said Benny.“You’re right!Electricity comes into our flat through wires.These are connected to cables under the street,”Dad added.“What are the cables connected to ”asked Benny.“They’re connected to a power station,”answered Dad.A moment later,Daisy came back.“May I have my packet of electricity?”Benny asked.“Here you are!”said Daisy.“But … these are batteries!” said Benny.“Daisy’s right,” said Dad.”The chemicals inside batteries produce electricity.” Mum said,“Who looks foolish now,Benny?”
答案
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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