
①—Cl,CH2=CHCl
②—CH3,CH2=CHCH3
③—CN,CH2=CH—CN
④—C6H5,CH2=CH—C6H5
⑤—OOCCH3,CH3COOCH=CH2
⑥—COOCH3,CH2=CH—COOCH3
A.只有①②③ B.只有①②③④⑥
C.只有①②③④⑤ D.全部正确
①—Cl,CH2=CHCl
②—CH3,CH2=CHCH3
③—CN,CH2=CH—CN
④—C6H5,CH2=CH—C6H5
⑤—OOCCH3,CH3COOCH=CH2
⑥—COOCH3,CH2=CH—COOCH3
A.只有①②③ B.只有①②③④⑥
C.只有①②③④⑤ D.全部正确
D