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实现IP地址到MAC地址映射的协议是（）。
A、ARP协议
B、ICMP协议
C、IGMP协议
D、IP协议

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‎According to Paragraph 3, which of the following statements is TRUE?

A．Teenagers should spend more time learning to drive.
B．Driving is a skill too complicated for teenagers to learn.
C．Restrictions should be imposed on teenagers applying to take driving lessons.
D．The licensing authorities are partly responsible for teenagers’ driving accidents.