When she was crossing the road, she was knocked down by a motor-

When she was crossing the road, she was knocked down by a motor-car and lay ______ by the roadside
A、asleep
B、thoughtless
C、unconscious
D、unaware
【正确答案】：C
【题目解析】：答案为C。asleep 睡着的；thoughtless 缺乏考虑的；unconscious 无知觉的；unaware 不知道的。