在TCP/IP中，负责将IP地址映像成所对应的物理地址的协议是()

A. draw enemies to it
B. attract birds of prey
C. have no benefit at all
D. protect it from predators

A. ships without crew will soon replace traditional ones
B. most air crashes are caused by operational mistakes
C. erewless ships are favoured just because of safety
D. human hands are more reliable than computers

A. which
B. there
C. where
D. that