My mother often tells me not to ________ or not to look down upon others.

A．show off

B．turn off

C．take off

D．get off

男，59岁，呼吸困难，胸痛，有发热，结合CT图像，最可能的诊断是（）

A.脓胸

B.肺脓肿

C.大叶性肺炎

D.肺囊虫病

E.肺癌