Which of the following is INCORRECT according to the passage？A．Excise tax is charged on ca
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Which of the following is INCORRECT according to the passage？
A．Excise tax is charged on cars.
B．There is a unified state tax laws.
C．Income tax increases as a person"s income increases.
D．Some states have both an income tax and a sales tax.
请帮忙给出正确答案和分析，谢谢！
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正确答案：B
细节题。从第四段末句Thestatetaxlawsarediverseandconfusing．可知，[B]与原文内容不符，故为正确答案。[A]可以从第五段找到，[C]可以从第四段找到，[D]的依据也可以从第四段找到，故均排除。