最大发音时问(声时)
参考答案：
指深吸气后能持续发声的最长时间，用来衡量受检者喉部调节功能及发声的持续能力。
如图：是模拟______成因的原理图，为了控制它造成的危害，你可以采取哪些有效的措施，请写出一点______．
I lost sight of Wang Ping when we reached _____ looked like a large market because of too many carriages flying in all directions.
A．that
B．which
C．what
D．where
