2023年郑州市高中毕业年级第三次质量预测文综答案
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2023年郑州市高中毕业年级第三次质量预测文综答案试卷答案，以下是该试卷的部分内容或者是答案亦或者啥也没有
11.D【解析】设x1
书面表达One possible version:NOTICEA sports meeting will be held in the playground of our school from next Thursday to FridayAs you know, the pressure of study is very heavy now, especially for those senior 3. So the purpose of the sports meeting is to letevery student get relaxed, as a result of which we students can live happily and heal thilyEveryone is welcome to take part in it. Those who perform excellently at the sports meeting will get prizes. But don' t take theresults so serously because taking part is more important than the result. Good luck to everyone!
4√1516.【答案】解析由题意及正弦定理得到(+b)(c-b),a2+b2-c15于是可得cosC=4’SnC=又由于c2=a2+b2-2 abcess,而c=4,∴16=a2+b2-≥2b-6b3ab2,即ab≤2,15△AB=2 absinc≤2当且仅当a=b时,△ABC的面积的最大值为4√15
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