2020－2022英语周报安徽九年级。答案

1.C.氟岗于能与才齿表而的羟(基)仁灰|学式:CaPO4)O川发牛沉淀的转化,牛成氟荷石灰化学式: Cas(PO4BF]D.氯化铁川于净水的原理是利用F3的水解产Fe(OH体,Fe(OH)体吸附沉際难溶性杂质。

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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