When he was working there he caught a serious illness from______ efforts he still suffers.  [    ]

A. which         

B. that            

C. whose          

D. what

不属于腹腔镜胆囊切除术禁忌证的是

A．疑有胆囊癌变者

B．胆囊息肉者

C．合并原发性胆管结石者

D．有出血倾向或凝血功能障碍者

E．合并妊娠者