A: 3+6
B: 6+6
C: 3×6
如图,长方体的长为15,宽为10,高为20,点B离点C的距离为5,一只蚂蚁如果要沿着长方体的表面从点A爬到点B,需要爬行的最短距离是( )
They lost their way in the forest, and ___ made matters worse was that night began to fall.