如图,在平面直角坐标系中,A(﹣1,5),B(﹣1,0),C(﹣4,3).
若一次函数y=(3-k)x-k的图象经过第二、三、四象限,则k的取值范围是( )
In a formal football match,each team can have three players to________their teammates when necessary.
As is known to us all, the Dragon Boat Festival is ____ ____ ____ famous ancient poet Qu Yuan.
把20克盐放入200克水中,盐和盐水的比是( )