Visitors were        at the        pictures that the guide showed.

A．amazed; amazing

B．amazed, amazed

C．amazing, amazing

D．amazing, amazed

与幽门螺杆菌有关的疾病是（）

A.胃癌

B.伤寒

C.十二指肠溃疡

D.胃炎

E.痢疾