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  3. Although "lie detectors" are widely used by governments, police departments and businesses, the results are not always accurate.

Although "lie detectors" are widely used by governments, police departments and businesses, the results are not always accurate.

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问题     Although "lie detectors" are widely used by governments, police departments and businesses, the results are not always accurate. Lie detectors are commonly【C1】______as emotion detectors, for their aim is to【C2】______bodily changes that contradict what a【C3】______says. The lie detector records changes【C4】______heart rate, breathing, blood pressure, and the electrical【C5】______of the skin. In the first part of the【C6】______, you are electronically connected to the machine and【C7】______a few neutral question("What is your name?" etc). Your physical reactions serve【C8】______the standard for evaluating what comes【C9】______Then you are presented with a few【C10】______questions among the neutral ones("When did you rob the bank?"). The idea is that if you are【C11】______, your body will reveal the truth, even if you try to【C12】______it. Your heart rate and breathing will change【C13】______as you respond to the questions.
    That is the theory, but psychologists have found that lie detectors are simply not
【C14】______.Since most physical changes are the same across【C15】______emotions, lie detectors can- not tell【C16】______you are feeling angry, nervous or excited.【C17】______people may be tense and nervous【C18】______the whole procedure.  They may react physiologically to a certain word ("bank") not because they robbed it, but because they recently used a bad check. In either【C19】______,the machine will record a“ lie”.
    On the other hand, some practiced liars can lie【C20】______hesitation, so the reverse mistake is also common.
【C7】
选项 A、investigated
B、questioned
C、raised
D、asked
答案D
解析 由下文的问题“What’s your name”可知，此空格处是问问题的意思，即“有人问你几个中性的问题”。因并列结构前用的是被动语态，所以此处也要用相同的被动结构，ask sb．a question为问某人问题的常用表达，被动形式为sb．is asked sth。选项investigate意为“调查”；question意为“询问、审问”有质疑之意；raise意为“提出”，其用法是raise sth，不能用sb．was raised a question；故此题选D。
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