People use money to buy food, books and hundreds of other things they need. When they work, they usually get paid in money.
Most of the money used today is made of metal or paper. But people used to use all kinds of things as money. One of the first kinds of money was shells(贝壳).
In China, cloth and knives were used as money. Elephant tusks(牙), monkey tails and salt were used in some parts of the world. Rice was also a kind of money used by the people in some islands.
The first copper coins(硬币) were made in China. They were round and had a square hole in the center. Different countries have used different metals for their money. Later, some countries began to make coins of gold and silver(银). But gold and silver were heavy to carry when people needed a lot of coins to buy something expensive. The Chinese were the first to use paper money. The first paper money looked more like a note from one person to another than the paper money used today.
Money has had an interesting story from the days of shell money till today.
People usually use money         .

A．to buy gold

B．to get something they want

C．to buy shells

D．to buy something expensive

Long, long ago people all over the world used        as money.

A．the same metal

B．the same paper

C．different metals

D．all kinds of things

The first paper money         .

A．looked like the same as the paper money used today

B．looked interesting

C．looked like a note

D．had a square hole in the center

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