---I am going to Nanjing and stay there for a week.

---____________ you are there, would you please buy some books for me?

A．If

B．While

C．Since

D．As soon as

患儿，9岁。1月前患肺炎喘嗽，迁延未愈，证见低热盗汗，干咳无痰，面色潮红，五心烦热，舌红少津，少苔，脉细数。治疗首选方（）

A.麦门冬汤

B.沙参麦冬汤

C.补肺阿胶汤

D.青蒿鳖甲汤

E.人参五味子汤