广播新闻编辑工作的特殊环节是______。
A．运用缩略语
B．撰写新闻提要
C．整理新闻资料
D．撰写串联词
E．选择和运用间奏乐
参考答案：B,D,E
One of the biggest problems in food production has always been that people have no reliable access to exact information, ____________ is often the case in China.
A．that
B．what
C．which
D．it
常用的阀门填料有哪几种？
