抢救心跳、呼吸骤停者，应首先
A．气道通畅
B．口对口吹气
C．胸外心脏按压
D．胸内心脏按压
E．静脉注射肾上腺素
参考答案：A
(2013·济南一中模拟)After graduation, Frank often thought of those who had helped him ________ his school life.
A．of
B．across
C．at
D．through
伤寒的并发症有哪些?最严重的并发症是什么?
