英语谜语(回答的人,请用英语来回答)谢谢
1.It's a small picture with teeth around it.It has no feet,but it can travel aroung the world.What is it?
2.I have cities but no houses;forests but no tree;rivers without water.What am
3.If you have it,you want to share it.If you share it,you don't have it.What is it?