【正确答案】正确答案：Human language, body language and facial expression all serve to convey information. The latter two lack duality, displacement and creativity and so on.(2 points)However, they also share some common distinctive properties. Body language exhibits arbitrariness a little bit.(2 points)For instance, nod means "OK/YES" for us, but in Arabian world, it is equal to say "NO".(1 point)

【答案解析】解析：考查人类语言与肢体语言和面部表情的异同。人类语言与肢体语言和面部表情的关键区别在于肢体语言和面部表情缺少二重性、移位性和创造性等特征。它们之间也有着相同特征。例如，人类语言具有任意性，一些肢体语言也具有任意性。