A:
B:
C:
D:6
Look at this desk. It's Jim's desk. It's brown. Jim's book is on it. The book is his English book. His pencil-box is on it, too. His pencil is in his pencil-box. But where's his pen? He can't find(找到) it.
两个体积相等的长方体,它们的长、宽、高一定相等
— It's over 2000 meters.
下列不属于地图的基本要素是: