已知⊙O的半径为5,点P到圆心O的距离为8,那么点P与⊙O的位置关系是( )
A:点P在⊙O上
B:点P在⊙O内
C:点P在⊙O外
D:无法确定
种子的胚由胚芽、胚轴、胚根和胚乳组成.(判断对错)
First, please read the ____ (introduce) of the book. Then tell me your opinion about it.