阿摩線上測驗
9. What is the major product of the following reaction?
(A) 
(B)
(C) 
(D) 
(E) no reaction occurs
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統計： A(0), B(15), C(0), D(0), E(0) #2055426
統計： A(0), B(15), C(0), D(0), E(0) #2055426