[单项选择题] Tariffs may ______ on commodities leaving an area or on merchandise entering an are
A.A. levyB. be leviedC. effectD. be effected
正确答案:B

[单项选择题] Tariffs may ______ on commodities leaving an area or on merchandise entering an are
A.A. levyB. be leviedC. effectD. be effected
正确答案:B