如果患者神志不清发作时，心电图显示适宜作电复律治疗的是（）
A．频发性室早
B．短阵成串室速
C．心房颤动
D．心房扑动
E．室扑或室颤
参考答案：E
两带轮的基准直径之差越大，则小带轮包角α1也越大。( )
It was rainy all day. We had to stay ________ home. [ ]
A. at
B. in
C. from
D. around
