◎ 题干
When the earthquake, a destructive natural disaster, happened, ninety-nine coal miners were trapped
in the coal mine _____the ruins, waiting _____.
[     ]
A. in; to be rescued  
B. under; for being rescued
C. in; to rescue  
D. under; to be rescued
◎ 答案
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◎ 解析
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◎ 知识点
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