男性，65岁，吸烟史40年，近来右胸痛，咳血丝痰，X线胸片显示右肺门增大，最适当的检查应是

A．肺门切层

B．肺部CT

C．纤维支气管镜检查

D．痰找结核菌

E．支气管造影

Cindy shut the door heavily and burst into tears. No one in the office knew__________she was so angry.

A．where

B．whether

C．that

D．why