The purpose of non-REM sleep is even more __43__. The new experiments， such as those described for the first time at a recent meeting of the Society for Sleep Research in Minneapolis， suggest fascinating explanations __45__ of non-REM sleep. (95)
43. A. subtle
B. obvious
C. mysterious
D. doubtful
45. A. in the light
B. by virtue
C. with the exception
D. for the purpose
分析：只要细心寻找即可发现，文章开头说的 “the purpose of non-REM sleep” 和结尾的 “_of non-REM sleep.” 遥相呼应。所以 45 填 D 。而在后文的 fascinating 就指示 43 应填与其同义的词，故 43 题选 C ，因为两者都表示 “ 神秘的、为之着迷 " 的意思
（2）阅读的技巧之一： 例证题
① 例证题的特征。当题干中出现example， illustrate， illustration， exemplify 时。
② 返回文章，找出该例证所在的位置，即给该例子定位。
③ 搜索该例证周围的区域，90%向上，10%向下，找出该例证支持的观点。注意：举例的目的是为了支持论点或是为了说明主题句。举例后马上问这个例子说明了什么问题？不能用例子中的话来回答这个问题。
④ 找出该论点，并与四个选项比较，得出选项中与该论点最一致的答案。
⑤ 例证题错误答案设计的干扰特征经常是：就事论事。
即用例子中的某一内容拉出来让你去选。(╳)
要求：在阅读中，遇到长的例子，立即给这个例子定位，即找出起始点，从哪开始到哪结束。
例：2008 Text 4
In 1784， five years before he became president of the United States， George Washington， 52， was nearly toothless. So he hired a dentist to transplant nine teeth into his jaw-having extracted them from the mouths of his slaves.
That's a far different image from the cherry-tree-chopping George most people remember from their history books. But recently， many historians have begun to focus on the roles slavery played in the lives of the founding generation. They have been spurred in part by DNA evidence made available in 1998， which almost certainly proved Thomas Jefferson had fathered at least one child with his slave Sally Hemings. And only over the past 30 years have scholars examined history from the bottom up. Works of several historians reveal the moral compromises made by the nation's early leaders and the fragile nature of the country's infancy. More significantly， they argue that many of the Founding Fathers knew slavery was wrong-and yet most did little to fight it.
George Washington's dental surgery is mentioned to .
[A]show the primitive medical practice in the past.
[B]demonstrate the cruelty of slavery in his days.
选项分析：[D]第一段说了一个不被大多数人所知道的事实，正是呼应第二段开头的这个观点，故为正解。[C]是根据第二段第二句所设置的干扰选项。排除它有两个方法：(1)选项中出现的是role of slaves，而原文中出现的是roles slavery played，已经偷换概念了。(2)but之后的观点就该和之前的观点不同了，例子也应该是为but前的观点服务的，而不是为but后的观点服务的。[B]自我总结的主观臆断选项，不否认这里能看出很残忍，但是这个例子不是为说明残忍而写的。[A]也同样，为自我总结的主观臆断选项。
