34.
(A) income
(B) supply
(C) export
(D) labor
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統計: A(13), B(172), C(21), D(13), E(0) #3710458
統計: A(13), B(172), C(21), D(13), E(0) #3710458
34.
(A) income
(B) supply
(C) export
(D) labor