答案:B
Stop cutting trees, _______ the earth will become worse and worse.
A.and
B.then
C.because
D.or
甲状腺大部切除术后,呼吸困难和窒息的并发症与下列哪项因素无关
A.气管软化塌陷
B.喉返神经损伤两侧声带麻痹
C.喉头水肿
D.手术创伤的应激诱发危象
E.切口内出血压迫气管