An old lady came         to the bus stop only          the bus had gone.

A．to run ; to find

B．running;to find

C．and ran ; finding

D．running; finding

胃溃疡最常见的并发症是（）。

A.穿孔

B.出血

C.幽门狭窄

D.癌变

E.肠上皮化生