Helen is sad, because she ____________.[ ]

A. played with friends

B. got " D " in her test

C. won the game

根据股价未来变化的方向，股价运行的形态划分为（）。

A.持续整理形态和反转突破形态

B.多重顶形和圆弧顶形

C.三角形和矩形

D.旗形和楔形