It was such a long way that they didn't the hotel until it became dark.
A:reach
B:arrive
C:get
一个正方体的水晶砖,体积为100cm3,它的棱长大约在( )
计算:⑴ (36-42)(36+42) ⑵(3)2+(π+3)0-27+|3-2|
能说出其中的道理吗?