2021-2022 英语周报 高二牛津 1答案

29.(1)三颈烧瓶(2分);通过观察装置A中产生气泡的速率来调节气体的流速(2分)(2)2Ch Na2CO=Cl2O (O 2NaC(2分);该反应放热温度升高(l2O会分解(2分)(3)2Fe3 3C厂- 10OH=2F)- 31- 5H2O(2分);生成的K2FeO在Fe 和Fe(OH)3的催化作用下会发生分解(或其他合理答案,2分)(4)82.5%(2分)

书面表达One possible version:Dear Jack,I am happy to know that you are to spend some time in China. I recommend you stay in Beijing, the capital andcultural center of China.First of all, there are a lot of museums where precious relics of historical interest are waiting for you toexplore. Besides, the exceptional Peking Opera performances there are also what you can t miss. And the city isalso best known for its abundance of ancient buildings, which are still well preserved.I hope that you will have a good time in China.Yours sincerely,Li Hua

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