答案及解析
1. 文章标题分析：How we form first impression
We all have first impression of someone we just met. But why？ Why do we form an opinion about someone without really knowing anything about him or her
从上面的结构可以知道“第一印象”就是我们对别人形成的最初的观点或看法。
2.小标题分析：抓住被选项中的核心词/特征词
A ways of departure from immature and simplistic impressions
B. comment on first impression
C. illustration of first impression
D. comparing incoming sensory information against memories
E threatening aspect of first impressions
F differences among Jocks(骗子)， Geeks(反常人) and Freaks(怪人)
2. 直接解题
A ways of departure from immature and simplistic impressions
B. comment on first impression
C. illustration of first impression
D. comparing incoming sensory information against memories
E threatening aspect of first impressions
F differences among Jocks(骗子)， Geeks(反常人) and Freaks(怪人)
1 Paragraph 2 ___。
The answer is related to how your brain allows you to be aware of the world. Your brain is so sensitive in picking up facial traits， even very minor difference in a how a person’s eyes， ears， nose， or mouth are placed in relation to each other make you see him or her as different. In fact， your brain continuously processes incoming sensory information – the sights and sounds of your world. Theses incoming “signals” are compared against a host of “memories” stored in the brain areas called the cortex (大脑皮层)system to determine what these new signals “mean”。
1. D. 分析：段首句是概括句(句意：答案与你的大脑怎样让你了解世界有关。)，该句暗示“大脑”可能是该段落的中心，而在段落中又出现了两个“brain”，因此判断小标题应该与“大脑”或“大脑的工作”有关，这样判断只有D合适(D中的memories与brain有关系)，而且D中的incoming sensory information 和 memories也直接在段落中出现了，因此判断D是答案。
思路特点：抓住段首句的大意和段落中词语使用的特点。
A ways of departure from immature and simplistic impressions
B. comment on first impression
C. illustration of first impression
E threatening aspect of first impressions
F differences among Jocks(骗子)， Geeks(反常人) and Freaks(怪人)