I want to know when he  ___ for New York tomorrow. [ ]

A. has left                          

B. is leaving

C. had left                          

D. has been leaving

某病人患胃溃疡住院检查，一个月后感到腹部隐痛、乏力，临床诊断为急性乙型病毒性肝炎。试问

该病人的肝炎最大可能是由何种途径感染而来？病人住院期间做过（）

A.胃镜活组织检查

B.采耳血做血常规

C.抽静脉血做肝功能检查

D.钡餐造影

E.胃液检验