Although we often send emails to each other, we have never seen each other ______.

A．in my eyes

B．eye to eye

C．in my face

D．face to face

肝性脑病最早出现的临床表现是（）

A.定向力障碍

B.性格改变和行为失常

C.睡眠障碍

D.神志丧失

E.昏睡