�国已在初中小学推行课本循环使用.某市一学期就�订课本32万册.课本的循环使用直接有利于哪种资源的保护 A.煤炭资源b.土地资源c.森林 Template




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tomski�国已在初中小学推行课本循环使用.某市一学期就�订课本32万册.课本的循环使用直接有利于哪种资源的保护 a.煤炭资源b.土地资源c.森林 coloring