Students should pay attention to the ____ between formal and informal words when they are learning a foreign language.
问题描述：
Students should pay attention to the ____ between formal and informal words when they are learning a foreign language.
distinction \ discussion \ separation \ decision
答
distinction n.区别\差异
discussion:讨论
separation:分离\分开
decision:决定
句意是:学生们应该注意正式与非正式单词之间的(),在学习的时候
根据上下文,应该填写:之间的差别\区别,所以选B