事故严重度用事故后果的( )表示。 A. 经济损失 B. 事故等级 C. 人员伤亡 D. 事故性质 查看完整题目与答案 ___ tell us everything, we could try to solve his problem. A. Were he B. If he should C. Were he to D. Was he to 查看完整题目与答案 You'd better decide...