题型:判断题 下列哪个选项中的两种物质属于碳链异构( )A.CH3CH2CH2CH3和CH3CH(CH3)2B.CH2=CHCH2CH3和CH3CH=CHCH3C.CH3CH2OH和CH3OCH3D.CH3CH2CH2COOH和CH3COOCH2CH3 查看答案
题型:判断题 —Where is his mother? —Sorry! ____.[ ]A. He is in the room B. I don't know C. Yes, I do D. No, it isn't 查看答案