I didn't catch up the first bus yesterday because I _______ too late in the morning. [ ]

A. get up

B. will get up

C. got up

D. have got up

患者，男性，18岁，2小时前被刀扎伤左季肋部，感左上腹疼痛，入院后查血压16.0/9.0kPa，脉搏86次/分，腹腔穿刺未抽出不凝血，腹部B超示脾周少量积液，此时应采用哪种治疗措施

A．保守治疗，观察血压脉搏变化

B．立即剖腹探查

C．行脾切除术

D．脾动脉结扎术

E．脾修补术