1.the cost of a typical bundle (market basket)of consumer goods changed over
time.
2.the burder of an excise tax on a product is independent of the elasticity
of the supply and demand for the product on which the tax is levied.
3.fluctuates substantially over the business cycle.
sorry~~由於本人資質愚昧so請高手幫我解一下吧~~~謝謝~~~感激不盡!!!!!
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