单项选择题

某煤矿发生瓦斯爆炸，救护队连续工作20多小时，先后发现28名人员遇难，次日寻找唯一一名失踪人员时，次日发生二次爆炸，造成5名救护队员死亡。根据《生产安全事故报告和调查处理条例》，这起事故的等级是（　）。

A.特别重大事故
B.重大事故
C.较大事故
D.一般事故
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听力原文：W: Doctor, I haven't been able to get enough sleep lately, and I'm too tired to concentrate in class.M: Well, you know, spending too much time indoors with all that artificial lighting can do that to you. Your body loses track of whether it's day or night.Q: What does the man imply?(13)A.The woman is making too big a fuss about her condition.B.Fatigue is a typical symptom of lack of exercisE.C.The woman should spend more time outdoors.D.People tend to work longer hours with artificial lighting.
A.M:
B.
Q:
C.The
D.
B.Fatigue
E.
C.The
F.
D.People
单项选择题
某建筑公司在试验吊具的过程中．由于操作工不慎，发生吊具坠落。造成1人死亡的生产安全事故。根据《企业职工伤亡事故分类》(GB6441)，该起事故的类别是()。
A.物体打击
B.高处坠落
C.坍塌
D.起重伤害
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