下列除哪项外，均为黄芪对心血管系统的作用（）
A、强心
B、降压
C、升压
D、抗病毒性心肌炎
E、抗风湿性心肌炎
参考答案：E
One night all of his ________ signs began to drop sharply and the head teacher, who believe in
the concept that no one should die alone, began to call his family members to the hospital. [ ]
A. common
B. obvious
C. vital
D. ordinary
云台的雕刻主要集中在什么地方？
