Miss Rose taught physics in a London school Last week she was explaining to one of her classes about sound,and she decided to test them to see how successful she had been in her work,she said to them,"Now,I have ...Miss Rose taught physics in a London school Last week she was explaining to one of her classes about sound,and she decided to test them to see how successful she had been in her work,she said to them,"Now,I have a sister in Washington",If I was calling her on the telephone,and at the same time you were 20 metres away,and listened to me from the other side of the street ,who could hear what I said earlier my sister or you ,and why?The cleverest boy at once anserede,"Your sister,Miss Rose,because electricity travels faster than sound waves."That’s very good"Miss Rose answered,But then one of the girls put up her hand,and Miss Rose said,"Yes,Betty""I don’t agree"Betty said."Your sister would hear you earlier because ,when it’s eleven o’clock here,it’s only six o’clock in Washington"展开更多
文摘Miss Rose taught physics in a London school Last week she was explaining to one of her classes about sound,and she decided to test them to see how successful she had been in her work,she said to them,"Now,I have a sister in Washington",If I was calling her on the telephone,and at the same time you were 20 metres away,and listened to me from the other side of the street ,who could hear what I said earlier my sister or you ,and why?The cleverest boy at once anserede,"Your sister,Miss Rose,because electricity travels faster than sound waves."That’s very good"Miss Rose answered,But then one of the girls put up her hand,and Miss Rose said,"Yes,Betty""I don’t agree"Betty said."Your sister would hear you earlier because ,when it’s eleven o’clock here,it’s only six o’clock in Washington"
