It             be the vocabulary that caused you the problem in the exercise because you know a lot of words.

A．couldn^’t

B．may

C．should

D．needn^’t

患者耳鸣不断，按之不减，烦躁易怒，胸胁胀痛，口苦咽干，舌苔黄，脉弦数。治疗除取听会、翳风、中渚、侠溪外，还应加（）

A.听宫、关元

B.听宫、足三里

C.耳门、太溪

D.太冲、丘墟

E.外关、合谷