听力原文：M: Do you really believe that clothes carry a kind of message and that what we put on is a reflection of what we feel? W: Oh, yeah. Now people are beginning to take seriously the idea of a kind of psychology of clothing, to believe that there is not just individual taste but also a thinking that is trying to express something we may not even be aware of ourselves. M: But surely this has always been the case. We all dress up when we want to impress someone we tend to put on something smart. W: But that's a conscious act. What I am talking about is more of a subconscious thing. Take for example the student away from home at university: if he tends to wrap himself up more than others, this is because he is probably feeling homesick. Similarly, a general feeling of insecurity can sometimes take the form. of over-dressing in warmer clothes than necessary. M: Can you give any other examples? W: Yes. I think people who are sociable tend to dress in an extroverted way, preferring brighter or more dazzling colors--yellows, bright reds, and so on. M: Do you think the care--or lack of it--over the way we wear has anything to tell us? W: Yes, indeed. The length of a man's trousers speaks volumes about his awareness of his own image. If his trousers are very short or having loosely, this probably means he's absorbed by other things. According to the woman, what governs the clothes we wear?