环甲膜位于（）之间，临床上常选作（）
参考答案：甲状软骨与环状软骨；紧急气管切开手术
It is still under discussion _____ the old bus station should be replaced with a modern hotel or not. [ ]
A. whether
B. when
C. which
D. where
Little _____ about her own safety, though she was in great danger herself. [ ]
A. did Rose care
B. Rose did care
C. Rose does care
D. does Rose care
