．烷烃分子可以看作由以下基团组合而成：－CH3 －CH2－ ,如某

．烷烃分子可以看作由以下基团组合而成：－CH₃ －CH₂－ ,如某烷烃分子中同时存在这四种基团，则该烷烃最少含有的碳原子数应是：

A. 6 B. 7 C. 8 D. 10

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．烷烃分子可以看作由以下基团组合而成：－CH3 －CH2－ ,如某

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