清退保密文件时，要( )。
A．复制原文
B．摘录文件内容
C．按平件清退
D．按原文标注密级处理
参考答案：D
解析： 略
Most staffs are against the new rules, but they have come into being ________. [ ]
A. anyhow
B. however
C. therefore
D. thus
肠伤寒可见
