问题
单项选择题
A ______ is used to communicate with another computer over telephone lines.
A．keyboard
B．modem
C．mouse
D．printer
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
A ______ is used to communicate with another computer over telephone lines.
A．keyboard
B．modem
C．mouse
D．printer
参考答案：B