单项选择题
The topic of fat is ______ many other taboo subjects.
单项选择题 In proxemics, ______ governs the standing space between two persons.
单项选择题 Effective communication is rendered possible between two conversing partners, if ______.
单项选择题 The word "stand-offish" (Line 10, Para. 2) could best be replaced by ______.