https://online2.tingclass.net/lesson/shi0529/0009/9907/411.mp3
https://image.tingclass.net/statics/js/2012
讲解文本：
hear a pin drop 静得连针掉在地上也听得见
When Mike spoke at the meeting, you would hear a pin drop.
等Mike一讲话，会场鸦雀无声。
It was so quiet in the room that you could hear a pin drop.
房间里安静得连掉一根针的声音都听得见。
疯狂练习吧!
