— Where is George? He said he would meet me here at 3 o’clock.

— He seems       with Mr. Brown in the office.

A．to talk

B．to be talking

C．to have talked

D．talking

湿颗粒的干燥最宜采用（）

A.鼓式薄膜干燥

B.沸腾干燥

C.喷雾干燥

D.冷冻干燥

E.吸湿干燥