阿摩線上測驗
23. If the nitrogen of pyrrole is protonated, the ring is ________.
(A) cleaved
(B) no longer aromatic
(C) susceptible to electrophilic substitution
(D) expanded
(E) unaffected
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統計： A(0), B(2), C(0), D(0), E(0) #2241196
統計： A(0), B(2), C(0), D(0), E(0) #2241196
