英语周报八年级外研版第3期答案

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【语篇导读】本文是一篇说明文。国际度量衡局已决定用一种更基本的测量方法来取代IPK,千克未来很有可能不再是统一的质量衡量的标准。32.A【解析】推断判断题。根据第二段First,thecvl-inderisrubbedwithapieceofsoft,alcohol-soakedcloth.Thenitissteamedwithpurewater.Finally,theIkgcylinderisreturned,carefully,toitsrestingplace.可知,它被悉心照料着。故选33.B【解析】词义猜测題。根据第五段TheInterna-tionalBureauofWeightsandMeasureshasdereplacethissinglephysicalspecimenwithamorefunda-mentalmeasurement-basedonelectriccurrent-inordertodefinethemassofanobject.可知,传统的千克之王即将被废黜。故选B。34.D【解析】细节理解题。根据最后一段AnothermajormotivationforthereplacementoftheIPKisthegrowingneedtobeabletocarryoutcIsemeasurements.可知,更换Ik的原因之一是为了满足越来越精确的测量的需求。故选35.C【解析】主旨大意题。文章从介绍位于巴黎一座城堡的最原始的“千克”开始,其作为国际质量衡量的标准,随着对衡量精准度的更高要求和对国际安全的考虑,国际度量衡局已决定用一种更基本的测量方法来取代IK,千克未来很有可能不再是统

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