問題詳情

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

參考答案

答案:A
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)