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【题目】下图是沼气使用的示意图,请认真观察,把这个示意图的内容写成一段话。要求:表述准确,语言简明、连贯,不超过90字(标点不计字数)。(6分)

【答案】公厕和养猪场的粪便为沼气池提供原料,沼气池产生的肥料供菜园使用、产生的沼气为厨房提供燃料;同时菜园为厨房提供新鲜的蔬菜,而厨房的剩饭剩菜为养猪场提供饲料,形成能源循环。

【解析】

【试题分析】本题考查学生图文转换,情景扩写的能力。图文转换的题型主要以下几种:描述内容,拟标题,品寓意。本题要求的是描述内容,要求做到客观、全面,即把所呈现内容按照一定的逻辑关系说明。这个示意图主要表明沼气的来源及作用。观察这个示意图时,要注意箭头的指向和具体内容。描述画面时,要注意把握层次问题,比如第一层可以写沼气池中的肥料的来源;第二层写沼气池的具体作用;从菜园、厨房和养猪场的箭头看,还要有第三层,即沼气池的使用实际上是一个循环过程等。

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