A killer whale at Sea World Orlando jumped out of its tank on Wednesday and fatally attacked a worker as horrified visitors _______.

A．has been looking up

B．looked on

C．had looked off

D．was looking in

气管向患侧移位，提示的疾病是（）

A．大量胸腔积液

B．支气管扩张症

C．肺气肿

D．肺不张

E．胸主动脉瘤