問題詳情

31 It is a____
 issue whether genetically modified foods are good or bad for our health; there are pros and cons totheir use.
(A) deliberate
(B) tedious
(C) prohibited
(D) controversial

參考答案

答案:D
難度:適中0.514706
統計:A(13),B(11),C(3),D(35),E(0)

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