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问题:[单选题]

[单选] The purpose of a custom is to cut down imports in order to protect domestic industry and worke

A . tax
B . toll
C . fee
D . tariff

参考答案: D

  参考解析

【答案】D
【解析】tax“税,税款”;toll“服务费”;fee“费用”;tariff“关税”。

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