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第1問目
　Until relatively recently, people in some parts of the world continued to use salt as a form of cash. There are several reasons why salt was used as money. Salt was given an economic value because there were so few places that produced it in large quantities. �@Another reason is that salt is fairly light and easy to carry for trading purposes. �AAdditionally, salt can be measured, so we can easily calculate its value based on its weight. �BFurthermore, salt stays in good condition for a very long period of time, so it hold its value. �CLast but not least, salt has many other uses such as melting ice on roads in snowy regions. In short, salt has certain characteristics that make it suitable as a form of money.　――センター試験2015本

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