三角形的三边长分别为5,x,8,则x的取值范围是( )。
3<x<13
—Is this a photo of your daughter?
—She looks _____ in the pink dress! [ ]
A. lovely
B. quietly
C. politely
D. happily
使心肌细胞"膜反应曲线"右移的物质是()
A.肾上腺素
B.强心苷
C.ATP
D.奎尼丁
E.苯妥英钠