Sometimes very young children have trouble （） fact from fiction and may believe that such things actually exist.

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 obtain data on consumers’ incomes and money spending motives
D．do researches in consumer psychology in a laboratory

A. You should keep the conversation short.
B. Asians are not friendly and don’t like to talk with others.
C. “To get down to business” means to start the work.
D. The topics of the small talk are not very important.