步骤三，精确定位原则 方位论原则：
细节题重定位，重要、总结、定位词
推断题重主题，篇章、段落、主题句
结构题重关系，论据、论点、之联系
主旨题重范围，篇章、各段、主题句
识词题重方位，解释、逻辑、平行关系
46. The author begins his article with Edmund Burke's words to_____.
主旨题，文章各段主题句
47. Misled people tend to think that using an animal in research is_____.
细节题，定位词所在句
48. The example of the grandmotherly woman is used to show the public's_____.
结构题，例子对应的论点句
49. The author believes that, in face of the challenge from animal rights advocates, scientists should_____.
细节题，定位词所在句
50. From the text we learn that Stephen Cooper is_____.
细节题，定位词所在句
