問題詳情
18. If you want to reduce the chance that plants you ship will suffer from shipping damage. You shouldapply _________to the plants before shipping.
(A) cytokinins
(B) abscisic acid
(C) oligosaccharins
(D) gibberellins
(E) ethylene
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