可以删除一个物件与另一个物件交集处内侧或者外侧的部分的命令是
A. 删除
B. 修剪
C. 分割
D. 差集
The ancient Chinese used extensively_______ as a building material in addition to bricks and tiles.
A. bricks
B. timber
The number carried a special meaning in ancient China. It was deemed that odd numbers ______ represented yang while even numbers yin
A. nine
B. six