Though most paper currency was at one time backed by fixed assets such as gold or silver, it now derives its purchasing power from a declaratory fiat of the issuing government.
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Awas at one time backed by
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Bhad at one time been backed by
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Cwas at one time backing
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Dhad at one time backed
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Ehas at one time been backed by
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显示答案
正确答案: A