以下不属于简报类公文的是（ ）。
A．情况反映
B．内部参考
C．会议纪要
D．工作通讯
参考答案：C
I _____while my friend _____ TV.[ ]
A. arrived; was watching
B. was arriving; watched
C. arrived; watched
D. was arriving; was watching
仰卧位和左侧卧位听诊最清晰的心音是（）。
A.第一心音
B.第二心音
C.第三心音
D.第四心音
E.第五心音
