题目

若二次函数的图像经过点，则关于的方程的实数根为 A．，         B．，       C.，         D．， 答案：A. 考点：一元二次方程的解法Although students are ________ to more, they typically know less and are less mature than thegenerations before. [      ]A. displayedB. releasedC. exploredD. exposed