—He wanted you to______ your absence last night.
A:call for
B:account for
C:send for
D:reach for
如图,抛物线y=﹣x2﹣2x+3 的图象与x轴交于A、B两点(点A在点B的左边),与y轴交于点C,点D为抛物线的顶点.
by on at to of