数据处理系统的功能有哪些？
参考答案：
数据收集、数据加工、数据存储、数据传输、数据输出。
-Here are three books on history. Which one would you like to borrow?
-______. You see, I'm interested in geography these days. [ ]
A. All
B. None
C. Both
D. Each
长期吸烟患者，术前应停止吸烟1周。
