阿摩線上測驗
15. The shift toward organic farming emphasizes the use of natural _____ instead of chemicals.
(A) constraints
(B) medicine
(C) effects
(D) fertilizers
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統計： A(18), B(27), C(14), D(123), E(0) #3430651
統計： A(18), B(27), C(14), D(123), E(0) #3430651
