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CET 等级考试◆CET6題庫下載題庫

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52. To label their produce as organic, farmers have to obtain a certificate showing that no _______ chemicals have been used to kill pests on the farm for two years.
(A) toxic
(B) tragic
(C) nominal
(D) notorious

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52. To label their produce as organic, f..-阿摩線上測驗