按反映的时态不同，税收统计分析可分为（）。
A、静态分析
B、动态分析
C、宏观分析
D、微观分析
参考答案：A, B
— Why does Mr Black look so sad this morning?
— I hear that a fire________in his house and lots of valuable things were burned last night. [ ]
A. broke into
B. broke up
C. broke down
D. broke out
信息从信息源结点传输出来后，信息的目的结点没有接收到该信息，这是下列哪一种攻击所产生的结果？（）
A．窃听
B．伪造
C．截获
D．篡改
