下列哪些心律失常不会导致阿-斯综合征（）
A.心室颤动
B.Ⅲ度房室传导阻滞
C.尖端扭转性室速
D.心房扑动
参考答案：D
He had ever climbed this mountain several months before, but ________ he couldn’t find the way this time.
A．anyhow
B．somehow
C．somewhat
D．sometime
