— Do you know what time the accident happened yesterday?

— I'm not sure. Maybe at 2:30 pm. I _____ at the department store at that time.[ ]

A. shop

B. was shopping

C. am shopping

D. shopped

小儿指纹沉隐主（）。

A.惊风

B.外感表证

C.内伤里证

D.脾虚证

E.疳积