I have cities but no houses,forests but no tress,rivers without water.What am _______

问题描述:

I have cities but no houses,forests but no tress,rivers without water.What am _______
,CAN YOU HELP ME?

我有城市但没有房子,有森林但是没有树,有河流但是没有水,我是什么? 答:地图(map)