：You put your index finger to your lips instead of saying , ”Be quiet, please”, which is called _________ funcation in nonverbal communication.A: modifying B: conveying C: regulatingD: substituting答案: substituting18、

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：You put your index finger to your lips instead of saying , ”Be quiet, please”, which is called _________ funcation in nonverbal communication.​A: modifying B: conveying C: regulatingD: substituting答案: substituting18、