2. 外语
  3. A facial expression results from one or more motions or positions of the muscles of the face. These movements【C1】______ the emot

A facial expression results from one or more motions or positions of the muscles of the face. These movements【C1】______ the emot

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问题     A facial expression results from one or more motions or positions of the muscles of the face. These movements【C1】______ the emotional state of the individual to observers. Facial expressions are a form of nonverbal communication. They are a【C2】______ means of expressing social information among humans, but also occur【C3】______most other mammals and some other animal species. Facial expressions and their significance in the【C4】______ can, to some extent, vary between cultures. People’s expressions are often shaped by artists.
Through this method, one’s spirit can be showed【C5】______.
    Humans can【C6】______a facial expression as a voluntary action. However, because expressions are closely【C7】______ to emotion, they are more often involuntary. It can be nearly impossible to avoid expressions for certain emotions, even when it would be strongly【C8】______to do so: a person who is trying to avoid【C9】______ to an individual he or she finds highly unattractive might【C10】______ show a brief expression of disgust before being able to reassume a【C11】______ expression. The close link between emotion and expression can also work in the other direction.【C12】______some researchers have observed in some cases, voluntarily assuming an expression can actually cause the associated emotion.
    Some expressions can be accurately【C13】______ even between members of different species—anger and extreme contentment【C14】______ the primary examples. Others, however, are difficult to understand even in familiar individuals. For instance, disgust and fear can be tough to tell【C15】______.
    Because faces have only a limited range of movement, expressions【C16】______fairly minuscule differences in the proportion and relative position of facial features, and reading them requires considerable【C17】______. Some faces are often【C18】______ read as expressing some emotion, even when they are neutral, because their proportions naturally【C19】______ those another face would【C20】______assume when emoting.
【C12】
选项 A、Since
B、As
C、While
D、What
答案B
解析 定语从句题。句意为：一些研究人员观察到，在某些情况下，当人们有意呈现某种表情时，通常会导致相关情绪的产生。此处考查的是as引导非限制性定语从句，as在从句中可以充当主语、宾语或表语，可以置于主句之前、插入到主句之中，也可以放在主句之后。例如：As we have seen，oceans cover morethan 70 percent of the surface of the earth．(正如我们所看到的，海洋覆盖地球表面的70％以上。)
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