[单项选择]One of the many theories about alcoholism is the learning and reinforcement theory, which explains alcoholism by considering alcohol drinking as a reflex response to some stimulus and as a way to reduce an inner drive state such as fear or anxiety. Characterizing life situations in terms of approach and avoidance, this theory holds that persons tend to be drawn to pleasant situations or repelled by unclean, sanity ones. In the latter case, alcohol drinking is said to reduce the tension or feelings of unpleasantness and to replace them with the feeling of pleasure generally observed in most persons after they have consumed one or more drinks.
Some experimental evidence tends to show that alcohol reduces fear in an approach-avoidance situation. Conger trained one group of rats to approach a food goal and trained another group to avoid electric shock. After an injection of alcohol the pull away from the shock was measurably weaker, while the pull toward food was unchanged.
The o
A. introduce some theories about alcoholism.
B. help alcoholics and others to understand the cause of alcoholism.
C. explain the application of a psychological approach to alcoholism.
D. show the most effective new treatment of alcoholism.

One of the many theories about alcoholism is the learning and reinforcement theory, which explains alcoholism by considering alcohoi ingestion as a reflex response to some stimulus and as a way to reduce an inner drive state such as fear or anxiety. Characterizing life situations in terms of approach and avoidance, this theory holds that persons tend to be drawn to pleasant situations or repelled by unpleasant ones. In the latter case, alcohol ingestion is said to reduce the tension or feelings of unpleasantness and to replace them with the feeling of euphoria generally observed in most persons after they have consumed one or more drinks.
Some experimental evidence tends to show that alcohol reduces fear in an approachavoidance situation. Conger trained one group of rats to approach a food goal and, using aversive conditioning, trained another group to avoid electric shock. After an injection of alcohol the pull away from the shock was measurably weaker, while the pull to
A. support Alcoholics Anonymous as a means of coping with alcoholism
B. present a learning paradigm that will help alcoholics to understand what causes their dependence upon alcohol
C. explain the application of a psychological approach to alcoholism
D. help researchers to formulate workable hypotheses about the treatment of alcoholism