A hamburger is very popular in the USA.It looks like bread with meat in it.Ham(火腿)is a kind of pork-but the hamburger does not have any pork in it.It has beef in it.The beef is inside a kind of cake.The hamburger food takes an important place in the diet culture of 20's century.It appears not only in the menu of“family-roast”and snack of American's favorite, but also in the hamburger food shop and restaurant all over the streets.
Some chain store such as Macdanlu, Hamburger King etc.is also opened as some branches in every where of the world.A hamburger is delicious.