问答题
[听力原文] 11-15
Americans, like many people elsewhere in the world, like to invite friends to their homes for en evening of food, drink and conversation. Formal dinners in fine homes and hotels in the U. S. are much the same as formal dinners anywhere in the world. But as most people in the U. S. have no servants, their dinner parties at home tend to be informal. Guests may sit sown at a table ,or, as many new small homes have no separate dining room or very small dining space, guests can also serve themselves and eat in the living room ,holding their plates or trays on their knees.
A more enjoyable form of entertainment is the picnic. Americans are great picnickers and almost every family has a picnic basket. Summer invitations are often for a picnic at a park or in the open countryside. Unless hamburgers or hot dogs are cooked over a fire, picnic food is usually cold.
Guests an serve themselves and eat in the living room