In modern society there is a great deal of argument about compctition.Some value it highly,believing that it is responsible for social progress and prosperity(繁荣).Others say that competition is bad because it sets one person against another and it leads to unfriendly relationship between people.I have taught many children who held the belief that their self-death affairs.In their single-minded pursuit(追求)of success.the devlopment of many other human qualities is sadly forgotten.