三个事件A, B, C相互独立必有三个事件A, B, C两两相互独立.
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6. Proxemics refers to the study of _______________relations.
社会保障制度的责任主体是(),实施的保证和依据是(),资金来源是(),目标是()。
8. The Chinese expression “黄道吉日” means a lucky day which is a supernatural theory. “黄袍”(huang pao) is the emperor’s dress, “黄屋”(huang wu) is his_______________.