2022英语周报33期答案

15.C【解析】Ca(OH)2微溶于水,装置C和E中的试剂均可选用浓氢氧化钠溶液,吸收SO2,A项错误;装置B中发生反应SO2+Na2O2=Na2SO4,每消耗1 mol na2O2,转移2mol电子,B项错误;关闭K1,打开K2,试剂Ⅹ是酸性KMnO4溶液或FeCl2溶液,均可证明SO2具有还原性,C项正确;实验过程中体现了硫酸的强酸性、难挥发性,D项错误。

Paragraph IJatin looked up and he saw the other boys rushingahead. Refusing to give up at this crucial point, Jatinclenched his teeth, jumped to his feet and ran as fast as hecould. Finally, he was the fourth one to dash across thefinish line. Jatin couldnt help sobbing at the thought ofletting his sister down. But much to his surprise, the run-ner who collided with him was disqualified for breaking therule and Jatin won the third prize. Jatin felt overjoyed andrelieved during the award ceremony, holding the shoesclose to his chestParagraph 2Filled writh pleasure, Jatin walked home in no timeHe could not wait to see his sister and share the good newsOn his arrival, Jatin found Neha was walking about outsidnervously and anxiously. " Neha, see what I have got foryou.Jatin said excitedly, taking the prize out of his bagwith his trembling hands. The instant Neha saw the shoesher face lit up. So thrilled was she that she threw herself atJatin."Thank you! Jatin. " Tears of joy welled up in theieyes as the brother and the sister hugged tightly together

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