For coin collectors who invest money in coins, the value of a coin is determined by various factors. First, scarcity is a major determinant. 21 a coin is, the more it is worth. Note, however, that rarity has little to do with the 22 of a coin. Many thousand-year-old coins often sell for no more than a few dollars because there are a lot of them around, 23 a 1913 Liberty Head Nickel may sell for over one million US dollars because there are only five in existence. Furthermore, the demand for a particular coin will also 24 influence coin values. Some coins may command higher prices because they are more popular with collectors. For example, a 1798 dime is much rarer than a 1916 dime, but the 25 sells for significantly more, simply because many more people collect early 20th century dimes than dimes from the 1700s.
【題組】22. (A) age (B) shape (C) size (D) weight
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