分析 本篇文章主要介绍了"Blue Farm"农场用牛的粪便来发电,既可以清洁环境,再生资源,又能节约能源.
解答 51-55 ABDCA
51.A.细节理解题.根据第一段When the Audet family turns on the lights at Blue Farm,they are using electricity that comes from cows-cow manure (粪肥),to be specific和第三段的最后一句The Audet family sells the extra electricity they can't use themselves.可判断农场用牛的粪便来发电,故选A.
52.B.细节理解题.根据第四段的第一句话"How's it works:A big machine moves back and forth cleaning the barn floor."可知这是它的工作原理:一个大机器来回清洗牛棚的地板.故选B.
53.D.细节理解题.根据文章第四段后部分的描述Its gas is kept and used to power electric generators (发电机),可知沼气的加热可以用来发电,可判断选D.
54.C.主旨大意题.根据When the Audet family turns on the lights at Blue Farm,they are using electricity that comes from cows-cow manure (粪肥),to be specific,可判断这里应该是循环利用.故选C.
55.A.推理判断题.本篇文章主要介绍了"Blue Farm"农场用牛的粪便来发电,既可以清洁环境,再生资源,又能节约能源.所以答案为选项A.故选A.
点评 本文是一篇科普类文章.做题时要在理解好文意的基础上,与题目有机的结合,从文章中找到相关细节性的句子与选项细细比对,进行选择或推理判断,选出符合文章内容的正确选项.做题注意灵活,有时可采用排除法或直选法确定出最终答案.
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