患者男性，70岁。上腹部隐痛2年，加重半年，1个月来疼痛以夜间为重，前倾坐位疼痛可以喊轻，食欲不振，伴腹泻，脂肪餐后腹泻加重，2个月来体重减轻15kg。

根据患者的临床特点，首先应该考虑的诊断是（）

A.肝门部胆管癌

B.萎缩性胃炎

C.胃癌

D.胰体癌

E.慢性胰腺炎

F.十二指肠球后溃疡

Lincoln, who many regard as one of our great presidents, was often ______ despite his reputation of telling good jokes.

A．bright

B．optimistic

C．gloomy

D．cheerful