单选题 How do you decide what you are going to buy in a supermarket? Do you look in the refrigerator and make a list? Even if you do so, the supermarket makes some decisions for you.
The managers do all kinds of things that you don"t even notice to make you buy more things. For example, the simple, ordinary food that everybody must buy, like bread, milk and oil, is spread all over the store. You have to walk by all the more interesting—and more expensive—things to find what you need. The more expensive food is packed with bright-colored paper. This food is placed at eye level so you see it and want to buy it. While the things you have to buy are usually put on a higher or lower shelf. However, candy and other things that children like are on lower shelves.
Some stores have red or pink lights over the meat so the meat looks redder. They put light green paper around spinach and put apples in red bags.
The longer you stay in the supermarket, the more you will buy. So the supermarket has a comfortable temperature in summer and in winter, and it plays soft music. It is a nice place for people to stay—and spend more money.
Supermarkets also sell something at a lower, and special price every week. Some people think this means all the prices are lower. In fact, some of them are not really cheaper. Something that is usually $0.50, might be a "special" at 2/$1.00, that is, two for one dollar.
So be careful in the supermarket. You may go home with a lot of food that you didn"t plan to buy. It"s the supermarket that makes the decision for you.