Mr Brown was born in a poor family.He couldn't go to school when he was young.Now he's a porter[1] and works at a station.He doesn't think it's necessary[2] to know some knowledge[3] of science.His son,Bill,began to go to school last year.The boy likes nothing except playing.He doesn't listen to the teachers in class and can't do his homework after class.It's the hardest thing for him to do maths exercises.And he wants to drop it.

　　Last evening Mrs Brown heard Bill crying in the next room while she and her husband were watching TV.She came up to him and asked,"What's the matter,Bill?"

　　"I can't do my maths homework,"said the boy."I won't go to school tomorrow!

　　"No,no,don't do that!"said the woman."Maybe your father can help you."

　　Then she asked her husband to help their son with his maths.Mr Brown said,"But I don't know maths,either."

　　"It doesn't matter,"said his wife."You'll only coax him out of crying."

　　Mr Brown had to do as his wife said.The next afternoon Bill came back and showed his exercise?book to his father.The man had a look at it and shouted to his wife,"Come here quickly,dear!I got an A in maths!"

　　Notes:[1]porter /`pt/n.搬运工 [2]necessary/`nesIsrI/adj.必要的 [3]knowledge/`nlId/n.知识