题目内容

路由器是用于连接多个运行不同协议的局域网，也就是用于异构网络互连的网络连接设备。

A. 对
B. 错

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互联网中只有在高级别的网络中可见到路由器。

A. 对
B. 错

Could you go to the to mail this package for me?

A. post office
B. police station
C. train station
D. airport

Vanessa know how to play the violin.

A. don’t
B. isn’t
C. doesn’t
D. haven’t

he live around here? I haven neverseen him before.

A. Do
B. Is
C. Does
D. Have