开放性气胸首要的急救措施是（）
A.纠正休克
B.封盖伤口
C.清创缝合
D.胸膜腔穿刺
E.胸膜腔引流
参考答案：B
—I counted sheep, I drank milk and I tried everything, but nothing helped.
—It seems you _____ too much recently. Try some sleeping pills.
A．worked
B．work
C．had worked
D．have been working
慢性肝病患者肝功受损程度的指标为（）。
A.ALT
B.AFP
C.血清蛋白电泳及A／G
D.γ-GT
E.凝血酶原时间测定
