第6题: [简答题]Modern chickens fight more because they need more food and water to lay more eggs. About 35 percent of them die because of fights. As a result, many farmers are forced to cut the beaks(鸟嘴，喙) of their chickens to prevent them from harming each others. 参考答案:现代的鸡打斗更多，因为它们需要更多的食物和水，才能生更多的蛋。它们中有35%都是死于打架的。结果，很多农夫被迫剪掉它们的嘴以阻止它们互相伤害。 答案解析:prevent sb．from doing sth．意为：阻止某人做某事。
