The patient was in bad need of operation but there was no guarantee(保证) that she would survive the anaesthetic (麻醉剂), which made the doctors on the horn of a __________.

A．process

B．arrangement

C．ceremony

D．dilemma

事故调查报告应当包括下列内容（）

A.事故发生单位概况

B.事故发生经过和事故救援情况

C.事故造成的人员伤亡和直接经济损失

D.事故发生的原因和事故性质