[速览]6 ．Hearing Loss听力丧失

病人：我听力不好已经有些时候了，而且似乎年岁愈大，听力愈差。病人：从昨晚开始，我的听力突然下降，还伴有头晕。医生：您耳鸣的音调是怎样的，是高调还是低调？Doctor：I would liketo test your hearing ability with atuning fork（an electro‐audiometer）． The electro‐audiogram shows that yours is a type of nerve deaf ness（conduc‐tion deafness， ......