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江苏省扬州市2015年中考数学试卷第27题,是一道颇具争议的问题.一说超标,一说好题.现分析如下,愿与各位同仁交流切磋.一、试题呈现科研所计划建一栋宿舍楼,因为科研所实验中会产生辐射,所以需要有两项配套工程:1在科研所到宿舍楼之间修一条笔直的道路;2对宿舍楼进行防辐射处理.已知防辐射费y万元与科研所到宿舍楼的距离xkm之
The Yangzhou City, Jiangsu Province, 2015 senior high school entrance examination mathematics papers 27 questions, is a controversial issue .One is said to exceed the standard, a good question is now analyzed as follows, is willing to exchange views with colleagues. Dormitory, because the experiment will produce radiation research institutes, so there are two supporting projects: 1 in the research institute to the dormitory building a straight road between the repair; 2 pairs of dormitory radiation protection treatment known radiation protection costs y Million and scientific research to dormitory floor distance xkm