哪些措施可以使肥厚型心肌病流出道梗阻减轻（）
A.心得安治疗
B.异丙肾上腺素
C.异搏定
D.立位
E.用力握拳
参考答案：A, C, E
_________, athletes all over the world took part in the Winter Olympics held in Vancouver.
A．Honored and excited
B．Honored and excitedly
C．Honoredly and exciting
D．Honoredly and excitedly
肌肉可收缩，但不能产生动作，肌力为（）。
A.0级
B.1级
C.2级
D.3级
E.4级
