There is ______ interesting sign on the ______ cage.
A. an,birds'
B. a,bird's
C. the, birds
D. A, B and C
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— Who's______ young man with long hair — He's a friend of mine.
A. a
B. the
C. an
D. his
男,40岁,因呼吸困难和水肿人院。查体发现颈静脉怒张,肝在右肋缘下4cm,表面光滑,轻度压痛,双下肢压陷性水肿。 该患者心音可有以下变化,除了()
A. 心尖部第二心音增强
B. 心尖部第一心音增强
C. 肺动脉瓣区第二心音增强
D. 肺动脉瓣区第二心音分裂
E. 心尖部第一心音可呈拍击性
I'm very sorry I took your ring ______ mistake.
A. by
B. over
C. through
D. about
骨科手术术前备皮需要的时间为
A. 8小时
B. 4小时
C. 3天
D. 1天
E. 5天