问题
单项选择题
______ is the first software we see when we turn on the computer.
A．Word processor
B．Internet
C．Operating system
D．Application
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
______ is the first software we see when we turn on the computer.
A．Word processor
B．Internet
C．Operating system
D．Application
参考答案：C