信息媒介
参考答案：
介于信息活动中信息发出者与接收者之间的中介物，是承载信息符号的物质载体。分为感觉媒介、表述媒介、表现媒介、储存媒介、传输媒介。
Their mother ________ dinner at the kitchen when a quarrel ________ among the children.[ ]
A. was preparing；was broken out
B. prepared；was broken out
C. was preparing；broke out
D. prepared；broke out
岔线是指在区间或站内接轨，通向路内外单位的专用线路。（）（C、3、Y）[05-00-01-02][020205]
