【正确答案】正确答案： Peace Symbols The concept of peace is a very important one in cultures all over the world. / There are certain symbols / which people in different cultures recognize as representing peace. /The dove has been a symbol of peace and innocence for long in many different cultures. / But it didn't become a modern symbol of peace / until it was used on a poster for the World Peace Congress in 1949. / The rainbow is also an ancient and universal symbol, / often representing the connection between human beings and their gods. / Nowadays it is used by many movements for peace and the environment, / representing the possibility of a better world in the future. /