Why did the two robbers stop searching the flat?
A.Because the man's wife returned.
B.Because they had done much damage to the flat.
C.Because the dogs next door barked.
D.Because the neighbors phoned the police.
第3题
A.通风、除尘、防护、隔离
B.通风、吸尘、防护、隔离
C.通风、除尘、净化、隔离
D.通风、吸尘、净化、隔离
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