以下为2013年12月大学英语四级考试听力填空原文，考完试的同学可以看一下，备考的同学也可以研究一下考题。希望大家四级考试顺利通过。听力填空When Captain Cook asked the chiefs in Tahiti why they always ate apart and alone, they replied, “Because it is right.” If we ask Americans why they eat with knives and forks, or why their men wear pants instead of skirts or why they *y be *rried to only one person at a time, we are likely to get similar and very uninfor*tive answers because it’s right, because that’s the way it’s done, because it’s the custom or even I don’t know. The reason for these and countless other patterns of social behavior is that they are controlled by social norms shared rules or guide lines which prescribe the behavior that is appropriate in a given situation. Norms define how people ought to behave under particular circumstances in a particular society. We conform to norms so readily that we are hardly aware they exist. In fact we are much more likely to notice departures from norms than conformity to them. You will not be surprised if a stranger tried to shake hands when you were introduced, but you might be a little startled if they bowed, started to stroke you or kissed you on both cheeks. Yet each of these other forms of greeting is appropriate in other parts of the world. When we visit another society whose norms are different, we quickly become aware that things we do this way, they do that way.