题目

阅读理解 When we think of money,we think of coins and paper bills.that
When we think of money,we think of coins and paper bills.That is what money is today.But in the past people used many things in place of money.Some countries used cows.Other countries used salt,tobacco,tea or stones.Today there are still some places in the world that do not use paper money.One place is the island of Yap in the Pacific Ocean.
On the island of Yap,people use the heaviest money in the world —Yap stones.These are round,white stones with a hole in the middle.The Yap stones do not originate from the land.The Yap men have to go to the islands four hundred miles away to fetch them.Big stones can be twelve feet high —as big as two tall men.Small stones are as big as a dinner plate.
Rich people do not carry the Yap Stones.Servants follow the rich.Each servant carries a stone on a pole over his shoulder.Today the people on the island use paper money for everyday shopping.But for other things they still

提问时间：2020-08-03

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