Body language is not just about how we hold and move our bodies. It includes and so on（）
A. Our facial expressions
B. How we touch ourselves and others
C. How we position our body
D. Our closeness to and the space between us and other people （proxemics）, and how this changes
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Based on communication channels，belong to non-verbal communication（）
A. body language
B. facial expressions
C. gestures
D. eye contact
Noise is a term used for factors that interfere with the exchange of messages, including. Noise is inevitable（）
A. external noise
B. physiological noise
C. psychological noise
D. semantic noise
The stages of Culture shock include and Acceptance（）
A. Honeymoon
B. Disintegration
C. Reintegration
D. Becoming Functional
因为提出关系模型而获得图灵奖的是（）
A. Charles W.Bachman
B. E.F.Codd
C. Jim Gray
D. Michael Stonebraker
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