阅读理解：请根据短文内容，为每题确定l个最佳选项。
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 - aside perhaps from a few remarks or readily observable traits?
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 how a person’s eyes, ears, nose, or mouth are placed in relation to each other makes you see him or her as different. In fact, your brain continuously processes incoming sensory information - the sights and sounds of your world. These incoming signals are compared against a host of “memories” stored in the brain areas called the cortex(皮质) system to determine what these new signals “mean”.
If you see someone you know and like at school, your brain says “familiar and safe&rdq
A. past experience.
B. character.
C. facial features.
D. hobbies.
我来回答:
