____________in The darkness that at she dared not move an inch．

A．She was frightened so

B．So frightened she was

C．So frightened was she

D．So she was frightened

掘进工作面回风流中瓦斯浓度超限，应取以下采临时措施处理、由于风筒破损、断开或埋压等原因造成瓦斯超限，应立即处理风筒，恢复正常供风。