The teacher told the students to stay in the classroom and they did______.
A.absolutely
B.accidentally
C.accordingly
D.accurately
第7题
A.机械伤害
B.高处坠落
C.嗓声与振动
D.氢气爆炸
第8题
A.机械伤害
B.高处坠落
C.噪声与振动
D.乙炔爆炸
第9题
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