问题
单项选择题
Software refers to (70) . The most important software on any computer is (71) .
A．Virus
B．Windows 2000
C．software
D．Operating System
答案
参考答案：D
解析： 略
搜题请搜索小程序“爱下问搜题”
Software refers to (70) . The most important software on any computer is (71) .
A．Virus
B．Windows 2000
C．software
D．Operating System
参考答案：D
解析： 略