All of us depend for our peace of mind and our efficiency hundreds of these cues,often without our conscious awareness.
A.We haven't realized that these cues can help with our mind and our work. B.We need to deal with a large amount of cues quickly and unconsciously. C.We need mental peace and efficiency in order to understand these cues. D.We rely on these cues unconsciously to behave properly with ease.正确答案D
