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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 questions("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 question.
    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 cannot 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 本题考查词语搭配。通过上下文推测句意为“有人问你几个中性的问题”。这里you are______ a few questions是被动用法，没有介词，所以要填一个及物动词。变成主动形式就是______somebody a question。A项investigate意为“调查”，用法是investigate sth.；B项 question意为“询问”，用法是question sb．/sth.；C项raise意为“提出”，其用法是raise sth.，若用在这里应是raise a question to somebody，不能用sb．was raised a question；D项ask是及物动词，可以用被动，常说ask sb. a question，变为被动就是sb. is asked sth.。
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大学英语四级

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