态势语言主要有哪几种？
参考答案：
首语，手势语，目光语，微笑语，姿态语，服饰语，界域语。
柱塞泵启动后，即可开出口阀。
There is a real possibility that these animals could be frightened,______a sudden loud noise.
A．being there B．should there be C．there was D．there having been
