填空题

Nothing in recent years has so changed the economy of the United States as the development of the supermarket. (11) , people bought their food in small grocery stores, generally (12) on a nearby comer. Now, almost everyone shops in large supermarkets. The small independent grocer has (13) disappeared from the American (14) . When a supermarket is (15) in a certain section of a city, other smaller stores rise up around it almost (16) The entire group of stores becomes what is (17) . as a shopping center. The average supermarket covers about 35,000 square feet of shopping area. (18) . Six out of every ten American shoppers drive to the supermarket. (19) .On average she spends from one hour to two hours there each week. Psychologists say that women don’t go to the supermarket just to buy food, (20) .In the supermarket she feels that she is part of the outside world. She gets to know all the new products. Frequently she meets a number of her friends in the supermarket.