单项选择题

According to the text, computer chips have already been used to ______.

A．catch escaped prisoners
B．find missing children
C．follow lost animals
D．treat sick people
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单项选择题
Which of the following statements is best supported by the text
A．This chip has been proven to be very successful.
B．The use of this chip will be favored by everybody.
C．There will be a great market for chip planting in humans.
D．Dc0tors will make good money by using chips.
单项选择题
What problem may be caused by planting chips in the human body
A．People will be controlled by computers.
B．Computers could send out wrong information.
C．Chips can be the cause of diseases.
D．Information may be used improperly.
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