阅读理解。 In England, afternoon tea, taken between four and five, is the most informal (非正式) meal of the day. If you are a friend of the family, you may drop in for tea without an invitation or telling that you are coming. Very often it is not served at a table. The members of the family and visitors take tea in the sitting-room. Each person has a cup and saucer (托盘), a spoon (汤匙) and a small plate for bread-and-butter and cake. By the way, do not help yourself to cake first; bread-and-butter first, then cake if there is any. Another piece of advice: Do not put more than one piece of bread or cake on your plate at the same time. 1. Afternoon tea is usually served with _______. A. tea only B. tea and some food C. tea, dessert and meat D. cake and bread 2. If you want to have afternoon tea in a friend's home, _______. A. it is necessary for you to send a message B. you should wait for his invitation C. it is impolite for you to go there without taking anything with you D. it is unnecessary for you to call him or send a message 3. In the passage, 'drop in' means '_______'. A. pay an informal visit B. fall down C. drink at a friend's home D. break 4. It's impolite for you _______. A. help yourself to cake first B. share a cup with your friend C. put more than one piece of bread or cake on your plate once D. all of the above 5. Which of the following is NOT true? A. Afternoon tea is often taken in the sitting-room. B. The members of the family often share a cup and saucer, a spoon, etc. C. Afternoon tea is usually taken between lunch and supper. D. Help yourself to bread-and-butter before cake if there is any.