On our arrival, we found Tom_____ at the desk with his eyes ______ on the wall.

A．seated, fixing

B．seating, fixing

C．seating, fixed

D．seated, fixed

关于白细胞减少症，详细询问哪些病史最重要的是

A．服药史，既往史，过敏史

B．服药史，化学品接触史，过敏史

C．化学品或放射线接触史，感染史，预防接种史

D．服药史，化学品或放射线接触史

E．感染史，服药史，过敏史，放射线接触史