单选题 .  The eyes are the most important     1    of human body that is used to     2    information. Eye contact is crucial for establishing rapport (融洽关系)     3    others. The way we look at other people can     4    them know we are paying attention to     5    they are saying. We can also look at a person and give the     6    we are not hearing a word. Probably all of us have been     7    of looking directly at someone and     8    hearing a word while he or she was talking     9    we were thinking about something totally     10    to what was being said.
    Eye contact allows you to     11    up visual clues about the other person;     12    , the other person can pick up clues about you. Studies of the use of eye contact     13    communication indicate that we seek eye contact with others     14    we want to communicate with them, when we like them, when we are     15    toward them (as when two angry people     16    at each other), and when we want feedback from them.     17    , we avoid eye contact when we want to     18    communication, when we dislike them, when we are     19    to deceive them, and when we are     20    in what they have to say.1.