现场急救的措施应该是
A．加压封闭伤口B．胸穿C．清创缝合伤口D．输液、输血以维持循环的稳定E．给氧，转送至医院抢救
参考答案：A
In the less than two months since the reality television show—"Where Are We Going , Dad?" first aired, the show to the top of Chinese television ratings．
A．had climbed
B．has climbed
C．climbed
D．was climbing
下列有关听觉的陈述，正确的是（）
A.音高与声波的振幅关系最大
B.音高不受声波频率的影响
C.声波的频率决定响度
D.振幅相同但频率不同的声波响度不同
E.听觉的心理特性有频率、振幅和音色
