Ma Yingjiu, chairman of Chinese Kuomintang, expressed to the media his thought _________ the cross-straits would be united in time.

A．where

B．that

C．what

D．Which

疑由胃炎引起上消化道出血，为确诊疾病，合适的检查是（）。

A.吞线试验

B.粪便隐血试验

C.胃镜紧急检查

D.急诊胃肠钡餐检查

E.剖腹探查