A:Dd RRyy
B:dd rrYY
C:Dd Rryy
D:DD rryy
现在,轿车已进入寻常百姓家,设想你是一位驾驶员,在夜间行车时不但需要前车灯有良好的照明,还要会合理判断灯光的照射情况,若灯光由路中移到路侧,前方出现的情况是 ____,你判断的依据是 ____
I don't understand the text there are few new words in it.