单选题 The author's primary purpose in the passage is 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 Io formulate workable hypotheses about the treatment of alcoholism

【正确答案】 B

【答案解析】文章通篇讨论的是喝酒者对酒精产生依赖的原因，A，C，D三项均与原文无关。