单项选择题
A. Effects of a stroke B. Annual cost of stroke in the US C. Definition and description of a stroke D. Breakthroughs in treatment E. Risk factors of stroke F. Warning signs of a stroke
A. suffer from a stroke B. will be affected C. change their lifestyles D. will take place E. occurs at the back of his/her brain F. controls various body functions
A．The health condition of his or her grandmother. B．The geographical environment. C．The social convention. D．The family tradition.