23 While revenue is a primary consideration, Customs duties may also be levied to protect the domestic
industry from foreign ______.
(A)participation
(B)competition
(C) investment
(D)support
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統計: A(15), B(158), C(15), D(2), E(0) #2013449
統計: A(15), B(158), C(15), D(2), E(0) #2013449