问题
选择题
We were sad to learn that several students were by a car yesterday.
A．hit out
B．knocked over
C．run across
D．picked up
答案
答案：B
词义辨析。hit out抨击；knocked over撞倒，撞翻；run across偶然发现，撞见；picked up拾起，捡起，用车接。句意：我们很难过的得知昨天几个学生被一辆汽车撞倒了。所以选B。