1.It has cities but no houses,forests but no trees,rivers but no water.What is it?
MAP!
2.In the field stand many green round houses.In each green houses there is a white house.Inside the white house,there is a red body of water.In the water are many black men.What are they?
WATERMELON!
3.Something leads you up the hill and then down the hill,but it always lies still.What is it?
ESCALATOR!电梯!
对不对?