Mr Green showed his students some photos _____ at World Expo 2010 Shanghai. [ ]

A. being taken

B. taken

C. to be taken

D. having taken

“感冒”一词最早见于（）

A.《素问》

B.《伤寒论》

C.《仁斋直指方》

D.《诸病源候论》

E.《丹溪心法》