单选题 A scientist who wants to predict the way in which consumers (消费者) will spend their money must study consumer behavior. He must obtain data both on the resources of consumers and on the motives that tend to encourage or discourage money spending.
If an economist were asked which of three groups borrow most--people with rising incomes, stable incomes, or decreasing incomes--he would probably answer, those with decreasing incomes. Actually in the years 1947--1950, the answer was: people with rising incomes. People with decreasing incomes were next and people with stable incomes borrowed the least. This shows us that traditional assumptions (假设) about earning and spending are not always reliable. Another traditional assumption is that if people who have money expect prices to go up they will hasten to buy. If they expect prices to go down, they will postpone buying. But research surveys have shown that this is not always true.
The expectations of price increases may not stimulate buying. One typical attitude was expressed by the wife of a mechanic in an interview at a time of rising prices. "In a few months," she said, "we'll have pay more for meat and milk；we'll have less to spend on other things. " Her family had been planning to buy a new car but they postponed this purchase. Furthermore, the rise in prices that has already taken place may be disliked and buyer's resistance may be produced. This is shown by the following typical comment. "I just don't pay these prices； they are too high. " The investigations mentioned above were carried out in America. The condition most helpful to spending appears to be price stability. If prices have been stable and people consider that they are reasonable, they are likely to buy. Thus, it appears that the common business policy of maintaining stable prices is based on a correct understanding of consumer psychology.

单选题 According to the passage, if one wants to predict the way spend their money, he should ______.
A. rely on traditional assumptions about earning and spending
B. try to encourage or discourage consumers to spend money
C. carry out investigations on consumer behavior and get data on consumers incomes and money spending motives
D. do researches in consumer psychology in a laboratory

单选题 According to paragraph 2, one traditional assumption is that people with incomes borrow most.
A. average B. stable C. decreasing D. rising

单选题 According to paragraph 2, research surveys have proved that ______.
A. price increases always stimulate people to hasten to buy things
B. rising prices may make people put off their purchase of certain things
C. women are more sensitive to the rising in prices than men
D. the expectations of price increases often make buyers feel angry

单选题 From the results of the surveys, the writer of this article ______.
A. concludes that the saving and spending patterns in Great Britain are better than those in America
B. concludes that the consumers always expect prices to remain stable
C. concludes that maintaining stable prices is a correct business policy
D. does not draw any conclusion

单选题 Which of the following statements is always true according to the surveys mentioned in the passage?
A. Consumers will put off buying things if they expect prices to decrease.
B. Consumers will spend their money quickly if they expect prices to increase.
C. The price condition has an influence on consumer behavior.
D. Traditional assumptions about earning and spending are reliable.