《十二铜表法》规定：相邻田地之间，应留空地五尺，以便通行和犁地，该空地不适用时效的规定。这项条款说明古罗马（    ）

根据短文，选择正确答案。

   Hello! My name is Sun Wei. Here is an American boy. His name is David Smith. He is twelve. And I am twelve, too. David is in Class Three, Grade One. I am in Class Three, Grade One, too. He is Number Eight, Row Five. I am Number Five, Row Four.