原文:

　　Professor

　　For decades, psychologists have been looking at our ability to perform tasks while other things are going on, how we are able to keep from being distracted and what the conditions for good concentration are. As long ago as 1982, researchers came up with something called the CFQ-the Cognitive Failures Questionnaire. This questionnaire asks people to rate themselves according to how often they get distracted in different situations, like forgetting to save a computer file because they had something else on their mind or missing a speed limit sign on the road. John?

　　John

　　I've lost my share of computer files, but not because I’m easily distracted. I just forget to save them.

　　Professor

　　And that's part of the problem with the CFQ. It doesn’t take other factors into account enough, like forgetfulness. Plus you really can’t say you are getting objective scientific results from a subjective questionnaire where people report on themselves.

　　解析：

　　这道题的考点词也很明显“problem”，一般否定信息，以及“问题”都是需要关注的，容易出考点的地方，所以往下听，笔记能记到一个否定信息It doesn’t take other factors into account enough, like forgetfulness.

　　我们的笔记可以写成

　　1.X other factor;对应答案D.

　　文中that's part of the problem暗示这只是几个问题之一，之后会有并列成分出来，所以后面又跟了一例“Plus you really can’t say you are getting objective scientific results from a subjective questionnaire where people report on themselves.”这个信号词是Plus，相当于also，in addition, second 这样的意思。

　　我们的笔记可以记成

　　2. X object，对应答案A

　　不过，需要指出的是，有些双选题的答案可能会在文章前后出现，或者听不出文中明显的并列结构。这种题目的难度比在文章直接出现的并列结构更加难于定位。这个时候我们可能需要借助排除法来解题。

　　TPO15-L1-Q2

　　What are two points the professor makes about parchment?

　　A. It is more long lasting than paper.

　　B. It was inexpensive to produce during the Middle Ages.

　　C. It was the material Archimedes used for his writings.

　　D. Its use for books decreased after the 1400s.

　　原文：

　　During the 1400s, when printing was being developed, paper became the predominant material for books in Europe, but prior to that, it was parchment. Parchment is durable-much more so than paper。

　　解析：

　　根据原文得知，公元1400s纸变predominant，那么parchment自然下降了，因为parchment以前typically used，所以选D。

　　然而文中并没有很明显的并列信号词，没有as well as、both…and、in addition、plus等词，所以并列结构并不明显，学生容易遗漏下面一句话Parchment is durable-much more so than paper，所以A选项容易漏选。

　　那我们这道题还可以用什么方式解答呢?

　　答案是排除法。通过排除法，我们首先可以排除的是B，因为后面文中一直在强调羊皮纸很贵，“it could be reused, which came in handy since it was a costly material and in short supply.” 所以不可能像B选项说的那样，是便宜的。这个选项错误的原因是“与原文相反”。

　　在接下来，我们可以排除C，因为C的位置明显不对，属于“跨区”了。众所周知，听力笔记是需要分层的，跟问题不在一个层级的选项，哪怕说的再正确也是要排除的。仔细看笔记会发现，Archimedes这个信息在文章中后段才给出，所以肯定不会对应到这么靠前的第二题，再来，文章说Archimedes' writings were originally done on papyrus scrolls.阿基米德手稿是写在纸莎草上面，而不是羊皮卷上面。所以排除C.

　　希望上述的分析可以为同学们在以后做托福听力的双选题提供一些思路。技巧都是建立在能听懂文章大意的基础上，若没有扎实的听力基本功助力，还是不能顺利的解题。因此，在托福听力练习中实力和技巧相辅相成，大家努力加油吧！