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  3. When someone smiles at you, you might smile back, sometimes without even realizing it. It turns out that not just our smiles,

When someone smiles at you, you might smile back, sometimes without even realizing it. It turns out that not just our smiles,

admin2017-12-07  17
问题    When someone smiles at you, you might smile back, sometimes without even realizing it.
   It turns out that not just our smiles, but all of our facial expressions could be contagious, according to a paper recently published in the journal Trends in Cognitive Sciences.
   "We tend to mimic (模仿) the smiles or frowns of others because it helps us better understand what other people are feeling, allowing us to respond accordingly," explained Adrienne Wood, PhD, of the University of Wisconsin-Madison, the lead author of the paper.
   In order to find out how exactly we mimic others’ facial expressions in daily life, researchers reviewed more than 120 studies. They found that the "sensory motor simulation model" in the brain might be the cause of the mimicry.
   The model shows that when people see a certain expression, be it happy or sad, they instantly "try it out". In doing so, their brains find the previous memories of the same facial expressions being made and remind them of their feelings then. In this way, they can act in the proper way to others according to their own emotional reaction. But Wood noted that this process happens "below your awareness" and "within a few hundred milliseconds."
   Sometimes the brain recreates the expression without the facial muscles actually making it. For example, rather than giving a full smile, sometimes we only turn up the comers of our months. Despite this, our understanding of others’ emotions isn’ t being reduced.
   Figuring out others’ emotions by facial mimicry is one of our social tasks. But it’s not easy for everyone. According to the paper, people with certain motor diseases, like strokes or facial paralysis (面瘫), can have difficulty sharing other people’s emotions. The door to people’s feelings has been partially closed.
   "Facial mimicry certainly plays some role, and perhaps a key role, in understanding other people’s emotional states," said Kevin Ochsner, PhD, a neurologist (神经学家) from Columbia University. However, he also noted that facial expressions may sometimes not give clear clues, so facial mimicry may not be enough to fully understand the emotional state of a person in every condition.
What does the underlined word "contagious" in the 2nd paragraph most probably mean?
选项 A、Infectious.
B、Visual.
C、Acceptable.
D、Sensible.
答案A
解析 词义题。画线单词所在句子意思是：根据《认知科学趋势》杂志最近发表的一篇文章。不仅微笑，我们所有的面部表情都可能______。文章一开始说“有人对你微笑时，你会同报以微笑，有时你对此甚至浑然不觉”，由此可知，我们的面部表情同微笑一样，也是具有感染性的。infectious“有传染性的，有感染力的”，visual“视觉的，视力的”，acceptable“可接受的，认同的”，sensible“明智的，合乎情理的”。因此A项正确。
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