Armed police and railway workers were removing snow from the track to a train stuck near Jining in Inner Mongolia.
A. recover
B. free
C. protect
D. clear
网友回答
A. recover
(答案→)B. free
C. protect
D. clear
解析：动词词义辨析题。A．recover康复 B．free 使…自由C．protect 保护D．clear 清晰 句意：武装警察以及铁路工人在清除路上的积雪为的是弄出在内蒙古集宁被困的火车。 根据语境选B