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第6回
105 學年了
give
第21至25題為題組
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A polygraph machine, also known as a “lie detector,” is a common part of criminal investigations.
The instrument is used to measure
21
a person's body reacts to questions. The theory underlying
it is that lying is stressful, and that this stress can be measured and recorded on a polygraph machine.
When a person takes a polygraph test, four to six wires, called sensors, are
22. to different
parts of his body. The sensors pick up signals from the person's blood pressure, pulse, and perspiration.
23 the process of questioning, all the signals are recorded on a single strip of moving paper. Once
the questions are finished, the examiner analyzes the results to determine if the person tested
24.
truthful.
Well-trained examiners can usually detect lying with a high degree of 25. when they use a
polygraph. However, because different people behave differently when lying, a polygraph test is by no
means perfect
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B 25. (A) quantity
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(C) possibility
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