Having a glass of water first thing in the morning helps rid your body of poisonous substances that ________ overnight.

A．were stored

B．had been stored

C．are being stored

D．have been stored

男，32岁，餐前上腹疼痛5年，有时反酸。近日疼痛加重，且呈持续性，向腰背部放射，有时低热，大便正常。钡餐造影示十二指肠球部变形。血白细胞11×10⁹／L，中性O．78。下列诊断最可能是（）

A.慢性胃炎

B.十二指肠球部溃疡

C.胃癌

D.十二指肠穿透性溃疡

E.胃黏膜脱垂