2018-2022 英语周报 高一 外研 5答案

27.(1)d(2分)(2) NaClo3与盐酸反应产生Cl2,污染生产环境(2分)防止H2O2分解和盐酸挥发(2分)2LiFePO, H2O2 2H ==2Li 2FePO 2H2O(2 r(3)提高盐酸与H2O2的利用率(2分)(4)水浴加热(1分)趁热过滤(1分)高温(5)2FePO4 Ii2CO3 H2C2O=2 LiFePO4 H2O↑ 3CO2↑(2分)

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!

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