下列各项是测量左心室前负荷最直接的方法的是
A．肺毛细血管楔嵌压
B．左心室舒张末压
C．心排血量
D．平均动脉压
E．平均左心房压
参考答案：B
The film 2012 has filled some people with ________ fear that ________ man will meet terminal disasters in 2012.
A．a；/
B．a；the
C．/；the
D．the；/
—Let's watch the 2014 Youth Olympics in Nanjing.
— ____.[ ]
A. That sounds good.
B. No, I don't.
C. Yes, I do.
D. Thank you.
