： 分子式为C7H14的化合物G与高锰酸钾溶液反应生成4-甲基戊酸,并有一种气体逸出, G的结构式是:                                                                           (A) (CH3)2CHCH2CH2CH=CH2             (B) (CH3)3CCH=CHCH3                           (C) (CH3)2CHCH=C(CH3)2                 (D) CH3CH2CH=CHCH(CH3)2A: (CH3)3CCH=CHCH3 B:CH3CH2CH=CHCH(CH3)2 C:(CH3)2CHCH=C(CH3)2 D: (CH3)2CHCH2CH2CH=CH2 答案:  (CH3)2CHCH2CH2CH=CH25、