单项选择题

A．A system which trains doctors.
B．A group of experts who can provide professional advice.
C．A computer program which can provide professional advice.
D．A system which trains computer experts.
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单项选择题
A．To protect people and property.B．To collect taxes.C．To teach and train citizens.D．To save natural resources for future use.
A．To protect people and property.
B．To collect taxes.
C．To teach and train citizens.
D．To save natural resources for future use.
填空题
C
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