某税务局推广CTAIS的过程主要属于信息系统开发周期的哪个阶段（）。
A、系统分析阶段
B、设计实现阶段
C、运行实施阶段
D、系统维护阶段
参考答案：C
A: What shall I do I’ve got so many things on my mind now. Will anybody help me B: ().
A. How can I get support from others
B. Don’t expect me to help you. Is there anybody who can help me
C. Don’t ask me. It’s your baby, Mary. See, my hands are full.
D. Sorry. I didn’t expect you are so busy.
词中的领字，多数处于（）。
A.一篇之首
B.一片之末
C.一韵之首
D.一句之末
