甲状腺功能亢进病人口服普萘洛尔的目的（）。
A.减轻左室收缩力
B.安定精神
C.扩张大动脉
D.缓针解小动脉痉挛
E.扩张冠状动脉
参考答案：A
His ____ look on his face suggested that he was ____ to hear the _____ news.
A．surprising, surprised, surprised
B．surprised, surprising, surprised
C．surprised, surprising, surprising
D．surprised, surprised, surprising
必须采用法律所规定的特定行为形式才能发生法律效力的民事法律行为，被称为 ( )。
A．规定行为
B．不要式行为
C．要式行为
D．特定行为
