单项选择题

Which of the following expressions about the Visionics Corp's face scanning system is NOT true

A．It can't replace the law enforcement.
B．It has been improved.
C．It has been widely used in entertainment districts.
D．The database of the system contains photographs of a limited amount of peopl

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单项选择题

The technology in the second paragraph refers to ______.

A．face-scanning systems
B．fingerprint systems
C．gummy dummies
D．biometrics

单项选择题

Which of the following statements about the use of finger-scan devices for school lunch lines is NOT correct

A．It makes the school lunch lines move faster.
B．The fingerprint images of the student are recorded.
C．Some parents feel uncomfortable about the devices.
D．Those who needn't pay for their meals no longer get embarrasse