居民聚居地人行过道与既有穿越铁路通道间距大于1000米且无绕行条件，可以设置人行过道。（）
参考答案：错
信息化战争是人类社会由工业社会步入信息社会的产物。
We no longer keep up the close friend ship of a few years ago though we still visit each other on occasion.
A．in good time
B．up to date
C．now and then
D．once and for all
