If you are ordering two hamburgers in McDonald's, you're likely to say that you want two hamburgers and at the same time hold up two fingers to signify "two". This nonverbal message fulfills the function of ______.
【正确答案】
B
【答案解析】 重复功能是指起到重复语言信息，功能的非语言信息在语言信息不存在时可以单独起作用。题干中例句的非语言信息“hold up two fingers”和语言信息“want two hamburgers”相互重复。