The fence along the middle of the road is designed to_____vehicles ______ crashing into each other.A safegurad,against B protect ,againstC warn ,of D keep ,from

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The fence along the middle of the road is designed to_____vehicles ______ crashing into each other.A safegurad,against B protect ,againstC warn ,of D keep ,from
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The fence along the middle of the road is designed to_____vehicles ______ crashing into each other.A safegurad,against B protect ,againstC warn ,of D keep ,from
The fence along the middle of the road is designed to_____vehicles ______ crashing into each other.
A safegurad,against B protect ,against
C warn ,of D keep ,from

The fence along the middle of the road is designed to_____vehicles ______ crashing into each other.A safegurad,against B protect ,againstC warn ,of D keep ,from
明显选B嘛
protect ...from/agains + 动名词.固定用法
表示“保护……不使受到……的损害或侵犯”时常用结构protect...against/from...来表示,但较大的事件如天灾多用against,小事件如冷气则用from.

选B 。意思是 防止汽车撞上其他的汽车

D
keep sb from doing sth阻止某人干某事。
safeguard...against 维护……反对
warn sb of...警告某人....
protect...from...使某人免....

选D。这个句子的意思是,路中间的栅栏是用来阻止车辆撞到别人