2 Paragraph 3____。
If you see someone you know and like at school， your brain says “familiar and safe”。 “If you see someone new， it says， “new—potentially threatening”。 Then your brain starts to match features of this stranger with other “known” memories. The height， weight， dress， ethnicity， gestures and tone of voice are all matched up. The more unfamiliar the characteristics， the more your brain may say， “This is new. I don’t like this person.” Or else， “I am intrigued.” Or your brain may perceive a new face but familiar clothes， ethnicity， gestures – like your other friends; so your brain says： “I like this person.” But theses preliminary “impressions” can be dead wrong.
2. C.分析： 分析被选项：被选项A中的核心词“immature and simplistic”在段落中没有出现，因此不选择A; F中的核心词“Jocks(骗子)， Geeks(反常人) and Freaks(怪人)”在段落中没有出现，因此不选择F; 段落中段首句在举例子，而段未句说“这些最初的印象(前面提到的例子)可能是很错误的”，而段落中出现了不少例子(引号中的话语)，因此判断该段落是在利用例子解释说明“第一印象”，因此判断答案C正确。
思路特点：利用被选项中的特征词/核心词缩小答案选择范围，利用段落中句子结构特点“举例”句较多判断段落内容特点。
A ways of departure from immature and simplistic impressions
B. comment on first impression
E threatening aspect of first impressions
F differences among Jocks(骗子)， Geeks(反常人) and Freaks(怪人)
3 Paragraph 4 ___。
When we stereotype people， we use a less mature form of thinking (not unlike the immature thinking of a very young child) that makes simplistic and categorical impressions of others. Rather than learn about the depth and breadth of people – their history， interest， values， strengths， and true character – we categorize them as jocks， geeks， or freaks.
3.B.分析：在段未句中发现了F中的核心词，但是这些词在段落中只出现了一次，而包含这些词的句子说“我把他们分类成骗子， 反常人和怪人”，但并没有说这些人之间如何进行划分，因此判断F是干扰项；A中的核心词immature 出现了两词，甚至simplistic也出现了，A中说的是“避免简单，不成熟的印象的方法”，但是段落中并没有提到什么方法，所以A不是答案；F中强调的“危险性”在段落中没有呼应内容，因此判断B是答案。
思路特点：利用被选项中的特征词/核心词缩小答案选择范围，利用段落中句子核心结构的内容确认句子的大意判断答案。
A ways of departure from immature and simplistic impressions
E threatening aspect of first impressions
(F differences among Jocks(骗子)， Geeks(反常人) and Freaks(怪人))
4 Paragraph 5 ___。
However， if we resist initial stereotypical impressions， we have a chance to be aware of what a person is truly like. If we spend time with a person， hear about his or her life， hopes， dreams， and become aware of the person’s character， we use a different， more mature style of thinking—and the most complex areas of our cortex， which allow us to be humane.
4.A. 分析：段首句(观点句)说“如果我们拒绝最初的老套的印象，我们就有机会了解一个人真正是什么样子的”，而该句内容与A最接近(而且段首句后面在举例子说明—我们怎样做，我们的思维方式就会更加成熟)。