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  3. Oftentimes when we cry, we feel a lump in the throat. Does a lump actually form, or is there some other explanation? The

Oftentimes when we cry, we feel a lump in the throat. Does a lump actually form, or is there some other explanation? The

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问题     Oftentimes when we cry, we feel a lump in the throat.
    Does a lump actually form, or is there some other explanation?
    The lump-like thing we feel when overcome by emotion has to do
of how the nervous system deals with stress.【S1】________
    The part of the nervous system that handles stress called the【S2】________
autonomic nervous system. It controls bodily functions what we do not【S3】________
consciously control, such as digesting food and pumping blood through
the heart.
    However,  the autonomic nervous system is also important in
dealing with emotional states.
    When an animal encounters a stressed situation,  its autonomic【S4】________
nervous system kicks in to allow it to either fight or run away. It does
this by increasing the flow of blood and oxygen to the necessary muscles.
    The same applies for humans. Even when we experience emotions【S5】________
such as grief or sorrow, the autonomic nervous system responds as it
would to anger or fear by decreasing the flow of oxygen through the【S6】________
body. To increase oxygen intake, the autonomic nervous system makes
us breathe slower, and expands the glottis, the opening in the throat that【S7】________
allows air to flow from the larynx to the lungs.
    The extension of the glottis in and of itself does not create a lumpy【S8】________
feeling, until we try to swallow.  Since swallowing involves in closing【S9】________
the glottis,  this works against the muscles that close the glottis in【S10】________
response to crying.
    We experience the resulting muscle tension as a lump in the throat.
【S10】
选项
答案close—open
解析 语义错误。该句意为“……这与哭泣时开启声门的肌肉动作相反。”根据常识，人在哭泣时声门是打开的，因此将close改为open。
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