A、They can serve many people in a short time. B、They sell delicious food. C、They serve food at higher prices. D、Their service is

Many changes are taking place in the "food style" in the United States. Traditionally, meat and potatoes made up American food. Now they have many different kinds to choose from, various international food, health food, and fast-food, in addition to the traditional home-cooked meal. International restaurants are common, because the United States is a country of immigrants. Many cities even have special sections: Chinatown, Little Italy or Germantown. With these vast choices, people there can enjoy food from all over the world.
    Health food became popular when people began to think more seriously about their health. Health food includes natural food with minimal processing. There are no chemicals to make it last longer, taste or look better. Most health food includes: beans, cheese and eggs. Fast-food restaurants are now expanding rapidly all over the country. Speed is a very important factor in people’s lives. People don’t want to waste their time eating. Fast-food restaurants take care of hundreds of people in a short time. There is usually very little waiting and the food is always cheap.