問題詳情
2. Genetically engineered plants
(A) are more difficult to engineer than animals.
(B) include a transgenic rice plant that can help prevent are more difficult to engineer thananimals t vitamin A deficiency.
(C) are being rapidly developed, but traditional plant breeding programs are still the only methodused to develop new plants.
(D) are able to fix nitrogen themselves
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增