— Excuse me, could you tell me ________?
— On the Changjiang River.
A:where the accident happens
B:where the accident happened
C:where did the accident happen
下图是蝗虫的外形图,请据图填空。
等腰△ABC中,AB=AC=5,△ABC的面积为10,则BC= ____
下列说法中正确的是