连枷胸(反常呼吸)
参考答案:
多根多处肋骨骨折,受伤处胸壁失去周围组织支撑,造成胸壁软化,出现反常呼吸运动即连枷胸,使纵隔扑动、缺氧和二氧化碳滞留,发生呼吸和循环衰竭。
By the time of last year, she the piano for five years. [ ]
A. learnt
B. has learnt
C. had learnt
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