試題詳解

23 What does this passage imply?
(A) The chance for organic food to be free from genetically modified material is good.
(B) There is much a farmer can do to prevent his organic crops from being contaminated by genetically modified organisms.
(C) There is already enough research into the long-term risks or impact of genetically modified foods on biodiversity.
(D) It requires much effort for the natural and organic food producers to earn the non-GMO label.