The present situation is very complex，so I think it will take me some time to ________ its reality.

A．make up

B．figure out

C．look through

D．put off

男性，20岁，1个月前在运动时上腹部曾被撞伤，当时未加注意。4天前自觉上腹部肿块，伴上腹部胀痛；恶心，呕吐。体格检查：体温37.3℃，腹平软，中上腹偏左可扪及 15cm×18cm肿块，光滑，固定，有压痛。

应做的检查是

A．X线胸腹部透视

B．静脉胆道造影

C．纤维光束十二指肠镜检查

D．超声波检查

E．静脉肾盂造影