单项选择题

A．An alloy of copper and silver.
B．Pure silver or pure gold.
C．An alloy of copper and fin.
D．An alloy of gold and silver.
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单项选择题
A．To make coins lighter.B．To conserve silver.C．To use up surplus copper.D．To make coins last longer.
A．To make coins lighter.
B．To conserve silver.
C．To use up surplus copper.
D．To make coins last longer.
单项选择题
A．In a clothing store.B．In a garden.C．At a cleaner’s.D．At a printing shop.
A．In a clothing store.
B．In a garden.
C．At a cleaner’s.
D．At a printing shop.
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