腰椎旁神经阻滞的并发症是
A．局麻药中毒和蛛网膜下腔阻滞
B．气胸
C．感染
D．血压升高
E．恶心、呕吐
参考答案：A
---He made up his mind to devote his life________pollution_______happily.
A．to prevent;to live
B．to prevent;from living
C．to preventing; to live
D．to preventing;from living
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