_______ is the most useful invention?

A．Do you think which of these

B．Which of these do you think

C．Which of these you think

D．You think which of these

患者，男性，35岁，暴饮暴食后，心窝部突然疼痛，恶心呕吐，吐物为胃内容，吐后疼痛不缓解，查体温38．3℃。脉搏96次／分，脐周压痛，反跳痛，肌紧张不明显，无移动性浊音，肠鸣音减弱，血WBCl2．0×10⁹／L，中性88％。

为进一步明确诊断需进行以下哪项检查（）

A.腹部立位平片

B.肝胆胰脾彩色超声检查

C.血、尿淀粉酶测定

D.心电图

E.动脉造影