单项选择题
A.腈B.胺C.醇D.醚
A.R-CH=CH-CH2-X〉R-CH=CH-X〉RCH2-XB.R-CH=CH-X〉R-CH=CH-CH2-X〉RCH2-XC.R-CH=CH-X〉RCH2-X〉R-CH=CH-CH2-XD.R-CH=CH-CH2-X〉RCH2-X〉RC6H5-X
A.CH3CH=CHBrB.CH2=CHCH2BrC.CH3CH2CH2BrD.CH3CH2Br
A.HO-C6H4-CH2-OHB.HO-C6H4-CH2-BrC.Br-C6H4-CH2-OHD.Br-C6H4-CH2-Br
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