】During his work on child protection, he often acts as a(n)________ between parents and children, making the parents know what they can do and what they cannot do.
A、
receptor

B、
mediator

C、
rooster

D、
welder
出自:河北农业大学大学英语Ⅳ

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块