阿摩線上測驗
30. How many allylic hydrogen atoms are present in the following molecule?
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
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統計： A(0), B(1), C(1), D(0), E(0) #3437027
統計： A(0), B(1), C(1), D(0), E(0) #3437027
