以下是引用秋水长天在2003-10-6 17:36:00的发言:我来试一下  还请各位斑竹和大侠批评和指正!秋水有礼先!多谢!) 10、 The geese that gather at the pond of a large corporation create a hazard for executives who use the corporate helicopter, whose landing site is 40 feet away from the pond 这是原文的一个背景!其实也就解释了产生问题的原因! the corporation plans to import a large number of herding dogs to keep the geese away from the helicopter 这是公司所要采取的措施,也可以说是前提A! To solve the problem 这一部分当然是结论,也就是所要达到的目的B! 推导方向:A推出B! 这边有个hidden assumption: The dogs can keep the geese away from the helicopter! 也是本文的一个桥梁! 选项A说明了: The dogs will form an uncontrollable pack. 这群wild dogs不听指挥(注意,有一个 uncontrollable),他们要求获得freedom,自然也就没有办法按照公司原来的目的去 keep the geese away from the helicopter 为断桥型的weaken! 所以答案为A 19、 Most geologists believe oil results from chemical transformations of hydrocarbons derived from organisms buried under ancient seas. Suppose, instead, that oil actually results from bacterial action on other complex hydrocarbons that are trapped within the Earth. As is well known, the volume of these hydrocarbons exceeds that of buried organisms. 这是一个fact,也就是前提A! Therefore, our oil reserves would be greater than most geologists believe 这一部分是结论B! 推导方向是:A推出B! 这边有一个转换关系! the volume of these hydrocarbons exceeds that of buried organisms 这是一个fact! 而题目已经告诉我们: 只有通过:chemical transformations和bacterial action 其实这两者的作用都是一样的! 才能够转换成oil! 这里就当然有一个转换比率的问题! 选项E其实就说明了这个转换比率的问题! 把这个桥梁给架上了,所以support了原文的conclusion! 两者的作用相同,和他们的转换比例相同,有什么必然联系嘛?不好意思,我还是想不通。 我觉得 CR中有很多题目都涉及到比率的问题,最主要是能把这rate给看出来! 这样也就容易得多了! 一家之言,还望大家批评和指正! |