进行亲电加成反应时，下面烯烃(CH3)2C=C(CH3)2 ，(CH3)2C=CHCH3 ，CH3CH=CHC H3 (III)其反应活性顺序为:

进行亲电加成反应时，下面烯烃(CH3)2C=C(CH3)2

，(CH3)2C=CHCH3

，CH3CH=CHC H3 (III)其反应活性顺序为:

A. I;II;III
B. III;II;I
C. II;III;I
D. II;III;I

参考答案与解析：

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