题干
But for the metal cage to pull the miners to safety, the miners in Chile ____ in less than twenty-four hours.
A：would not be rescued
B：would not have been rescued
C：would be rescued
D：would have been rescued
答案(点此获取答案解析）
B
，则a与0的大小关系是a 
，则a与0的大小关系是a 