A:He hasn't traveled around the world yet.
B:He went mountain climbing last year.
C:He doesn't want to go at all.
研究能源利用和低碳经济、实现可持续发展已成为国际共识,能源按不同的分类方式可进行不同分类,下列四组能源中,能归入图所示阴影部分的一组是( )