To our surprise, not a single word ________ in the discussion last Friday. [ ]

A. had the teacher said  

B. said the teacher

C. the teacher had said  

D. did the teacher say

多根多处肋骨骨折伴胸腔内进行性出血的治疗

A．加压包扎固定
B．开胸止血加内固定
C．肋间神经阻滞
D．胸膜腔穿刺术
E．胸膜腔闭式引流