A:30°
B:45°
C:50°
D:60°
二次函数y=ax2+bx+c的图象如图所示,则下列判断中错误的是( )
下图表示某些工业部门对区位因素(仅考虑原料、能源、劳动力)的依赖程度。判断图中①、②、③代表的工业部门分别可能是( )
Harriet is lost and her parents are really ___________ her.