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    To save time, many Americans buy fast food because it can be quickly made ready for the table. The United States is known around the world for its fast food, such as hamburgers, sandwiches, pizzas and many kinds of ice cream. People can easily find fast food chains (连锁店), such as McDonald's and KFC in most of the big cities in the world.

    These years, many people have taken more and more care of their health while eating. They come to know eating too much meat will make them unhealthy. Many of them are also worried about food additives (添加剂). Some food additives may be harmful. They begin to eat more vegetables and fruit. They cook at home as often as they can.