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　　A price index that is calculated using the current weights of the index basket of goods and services is known as a:
　　A)chained price index.
　　B)Laspeyres price index.
　　C)hedonic price index.
　　答案：A
　　解析：A chained or chain-weighted price index uses updated weights for each good and service in its market basket. A price index that is not chain-weighted, such as a Laspeyres index, is calculated using weights for each good and service in the market basket as of the index base period. Hedonic pricing is a technique used to adjust a price index for upward bias from quality changes of goods in its market basket.
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