— I feel ______ a pity that I didn't attend Professor Smith's lecture.

— You really should have.[ ]

A. this

B. it

C. that

D. one

黄疸伴右上腹部阵发性绞痛见于的疾病是（）.

A.肝炎

B.肝硬化

C.胰头癌

D.急性胆管炎

E.胆道蛔虫