心脏骤停是指心脏（）
A.自律功能增强
B.传导功能降低
C.收缩功能减弱
D.射血功能突然终止
E.心室充盈障碍
参考答案：D
I went to New York City. But I bought_____ for myself because _____there was very expensive.
A．something, anything
B．nothing, everything
C．nothing, something
D．anything, everything
关于十二指肠溃疡的治疗，最重要的是
A．有感染时首先根除幽门螺杆菌B．中枢镇静C．保护粘膜D．有无感染均先制酸E．多食多餐
