—Have you been teaching here since graduation?

—No, I _____ on a farm for five years．

A．had worked

B．have worked

C．was working

D．worked

男，30岁，呼吸困难、气促、尿少半年余，体检示颈静脉怒张，心浊音界扩大，肝肋下3cm，脾肋下2cm，移动性浊音阳性，两下肢凹陷性浮肿；血压110/90mmHg，诊断考虑为（）

A.肝癌

B.肝硬化

C.心包积液

D.结核性腹膜炎

E.下腔静脉阻塞