单项选择题

It can safely be inferred that Sept. 11 ______.

A．confirmed the failure of polygraph in detecting deception
B．made American begin to know about lie detection
C．gave a spur to the study of lie detection in the United States
D．triggered America's development of lie detectors

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热门试题

单项选择题

According to the passage thermal cameras ______.

A．have yet to be put to general use
B．have proved successful since 2 years ago
C．have to undergo tests at least half a year
D．have been playing a dominant role in lie detection

单项选择题

A thermal camera is expected to detect deception by ______.

A．showing the physiological changes in the liar's face
B．scanning the liar's brain and his/her whole body
C．catching the sudden movements of the liar's eyes
D．screening the sudden rush of the liar's blood pressure