问题
单项选择题
The ______ is a collection of modules serving as interface between hardware and software to provide a software platform.
A．computer
B．processor
C．application software
D．operating system
答案
参考答案：D
解析： 操作系统是一组程序模块，作为硬件与软件之间的接口，提供了一个软件平台。