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!

10【解题分析】碘水中的I2与淀粉作用出现蓝色,与I2的氧化性无关,A项错误;NH3使红色石蕊试纸变蓝,证明NH3是一种碱性气体,B项错误;Na2SO3与H2SO4反应产生SO2,SO2使品红试纸褪色,证明SO2具有漂白性,C项正确;Cu与浓硝酸反应产生NO2,NO2氧化1生成的I2与淀粉作用变蓝,证明NO2具有氧化性而不是还原性,D项错误。【答案】C

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