2022初一七年级上册英语周报答案

第三节One possible versionParagraph 1And not tery long after that, he made a surprisingdecision. He decided to use all his rights, preparing for hislife at the remote island. In the first year he sent troopsveterinarians and animal trainers to kill the wild animals ortrain them for good use. The task was so huge but it wasworthwhile. Then the king sent a lot of farmers to start awide rice field and began to grow rice. Next he had manyfacilities, from hospital to school, built. After that he senta lot of educated people there. At last he sent all his fami-lies to the islandParagraph 2Finally the time came when the king had to be thrownatay to the island. With many strong soldiers catchinghimsmiled. He had prepared everything for thefinalWhen he was sent lo the island, the island had takenon a new look. Everybody there lived a comfortable life andthe king was welcomed warmly by his people. THcheered, "Long live the wise king. "The wise king livedhappily ever after. The clever people live now in the worldto prepare for their life in the future

23.(16分)(1)强(1分)<(1分)(2)SeO2 +2SO2 +2H20-2H2 SOA+Se,(2 3)H2SO4(浓)>SeO2>SO2(1分)(3)增大接触面积,提高反应速率(2分)过滤(1分)(4)Se+2HNO3(浓)—一H2SeO3+NO↑+NO2(2分)(5)Na2 Teo3(1 TeO3-+3H20+4e-=Te+6OH(2分)(6)Te4+2SO2+4H2O亠Te↓+8H++2SO(2分)(7)H2SO4、HC(1分)【解析】(1)非金属性:Se SeO2>SO2。(3)阳极泥粉碎后,与浓硫酸的接触面积增大,加快反应速率。Se难溶于水,可通过过滤法分离。(4)Se与浓硝酸反应的化学方程式为Se+2HNO2(浓)= H2 sec3+NO↑+NO2↑。(5)TeO2与足量NaOH溶液反应生成Na2TeO3和H2O;阴极的电极反应式为TeO?+3H2O+4e=Te+6OH-。(6)TeCl4和SO2、H2O反应生成Te、H2SO4和HCl。(7)由(6)可知,流程中可循环利用的物质是H2SO4和C

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