听力原文： The majority of people, about nine out of ten, are fight-handed. Up until recently, people who were left-handed were considered old, and once children showed this tendency they were forced to use their right hands. Today, left-hand- edness is generally accepted but it is still a disadvantage in a world where most people are fight-handed. For example, most tools are still designed for right-handed people. In sports, by contrast, doing things with the left hand or foot is often an advantage. Throwing, kicking or hitting from the 'wrong' side may confuse opponents, who are accustomed to dealing with the majority of players who are right-handed. In the past, in most Western societies, children were often forced to use their right hands, especially to write. In some cases, the left hand was tied behind the child's back so that it could not be used. If, in the future, they are allowed to choose, there will certainly be more left handed people, and probably fewer depressed people as a result of being forced to use their right hands. (30)