英语猜谜1.I have forests with no trees.I have cities with no hou

英语猜谜
1.I have forests with no trees.I have cities with no houses.I have rivers with no water.What am I
2.Two little boats without any sails.With passengers on board .They don't go on the river or sea .But travel on dry land.In the day boats pass to and from .But at night they are both empty .What are thy