Mary speaks with a strong southern accent so that she is taking classes to      herself of it.

A．support

B．struggle

C．rid

D．equip

女，45岁。右上尖牙咀嚼痛1周，伴右侧眶下区肿痛3天。查体见右眶下肿胀明显，右上尖牙龋坏，髓腔暴露、叩痛(+++)。前庭沟肿胀，并有波动感

如患者2天前来就诊，对该患者的处理应该是

A．开髓、拔髓、引流

B．穿刺

C．仅口服抗生素

D．局部热敷

E．拔除患牙