2．It was after dark when the two children were both ________ on the safety crossing by a lorry.
问题描述：
2．It was after dark when the two children were both ________ on the safety crossing by a lorry.
A.knocked down B.knocked out C.run out D.run across 这几个短语分别是什么意思.
答
选A（撞到的意思,句意：天黑后,在安全路口上,两个孩子都被卡车撞了.）
knock down撞到；拆装；拍板成交；降低价格
knock out 敲空；击倒；打破；使筋疲力竭
run out用完；耗尽；跑出；到期；伸向
run across 偶然遇到；跑着穿过再麻烦您一下，这句话怎么翻译呢。