张某，男，65岁，头痛身痛、鼻塞流清涕、长期咳嗽，咳嗽吐稀白痰、口不渴或渴喜热饮、苔薄白。医生诊断为风寒感冒，伴慢性支气管炎。老年人用药时剂量的选择应（）

A.按说明书服用

B.从最大剂量服用

C.从最小剂量服用

D.首次服用剂量加倍

E.首次服用剂量减半

—You didn’t come to school yesterday, did you?

—_______, though I was very busy.

A．Yes,I did

B．No, I didn’t

C．Yes, I didn’t

D．No, I did