According to the statistics, listening to loud music at rock concerts ______ hearing loss in some teenagers in the past 2 decades.

A．have caused

B．caused

C．had caused

D．has caused

下列霍乱休克抢救措施中错误的是（）

A.尽快扩容治疗

B.大量应用缩血管性血管活性药物是升血压的关键

C.必要时加用激素

D.及时补充电解质

E.急性肺水肿心力衰竭者用强心剂毛花苷