耳蜗中部受损时，出现的听力障碍主要为（）
A.低频听力
B.高频听力
C.中频听力
D.中低频听力
E.高中频听力
参考答案：C
The plan was when it was discovered how much the scheme would cost. [ ]
A.released
B.deserted
C.resigned
D.abandoned
痞满与鼓胀的相同症状是（）
A.外有胀大之形
B.按之无痛
C.触之无形
D.胀满之苦
E.心下痞塞
