章某，颌下腺炎长期反复发作，保守治疗无效，颌下能触及硬块，导管及腺体交界处证明有结石，应采取（）

A.结石摘除

B.颌下腺摘除

C.全身抗生素应用

D.拔除邻近龋坏及松动牙

E.物理疗法

________struck me________I would have an important meeting in Shanghai the next day. [      ]

A. It; which  

B. What; that

C. What; which  

D. It; that