問題詳情

1.Which of the following choices represent(s) a pair of resonance forms?


(A) both (a) and (b)
(B) both (b) and (c)
(C) both (a) and (c)
(D) All of the above

參考答案

答案：B
難度：計算中-1
書單：沒有書單，新增