几年级的文章?One evening,Daisy said,'I'm going to buy a packet of

几年级的文章?
One evening,Daisy said,'I'm going to buy a packet of sweets.Does anyone want anything?'
Benny,Daisy's brother,said,'Yes.Can you get me a packet of electricity,please?'
Daisy said,'OK,' and went out.Benny laughed,'Ha!Ha!I've tricked Daisy at last.She doesn't even know what electricity is.She thinks that she can buy it in packets,like sweets!She'll really look foolish.'
Mum said,'Do you know what electricity is?'
Benny said,'Yes.Electricity flows through a wire.A meter measures the amount you use,and you get a bill for it monthly.It's like water,in a way.'
'That's not a bad explanation,' said Dad,'although electricity is much more dangerous than water.Electricity is a good servant,but a dangerous one.You must always be careful with it.Can you tell me what it looks like?'
Benny scratched his head.
Dad said,'Nobody's ever seen electricity.It's invisible.But we can change it into different forms of energy that we can see,hear or feel.Can you think of an example?'
Benny said,'Light!The light in a light bulb.'
Mum said,'That's right.Do you know where electricity comes from?'
Benny said,'Well,it comes into our flat through thin wires,and these are connected to thick wires that are buried under the street.'
'We call the thick wires cables,' said Dad.'What are they connected to?'
'A power station,' said Benny.
Daisy then came back.Benny asked politely,'May I have my packet of electricity,please?' There was a grin on his face.
'Yes,you may,' said Daisy.'Here it is.'
Benny said,'But these are batteries!'
Daisy said,'That's right.'
'But...but ...,'said Benny.
'Daisy's right,' said Dad.'They're packets that contain electricity.The chemicals inside produce electricity.'
Daisy asked,'Didn't you know that,Benny?'
Mum said,'Who's looking foolish now,Benny?'

牛津8年级