2022-2023 英语周报 七年级 新目标实验 42答案

2022-2023 英语周报 七年级 新目标实验 42答案已经整理完毕，供同学们学习参考，更多英语周报答案，请关注本网站。

27.(14分)(1)b(1分)NH3(1分)(2)提高了食盐的利用率,可循环使用:可制得氮肥NH4Cl:减少无用的CaCl2生成;可与合成氨厂联合:降低了设备的成本(写出1条得1分,2分)(3)2 Nazca3+3HO2=2Na2CO3·3H2O2(2分)硅酸根与金属离子沉淀,防止金属离子催化H2O2分解(2分)(4)CO2、NaCl、异丙醇(写出2个给1分,3个给2分)(5)冷却过滤洗涤干燥(2分)(写对2个可给1分)(6)(或1.31Vm等,不化简不扣分,2分)

书面表达One possible versionDear PeterI'm writing to invite you to see the Chinese Painting Exhibition to be held in our city.The exhibition will start at 8: 30 am on Saturday and last till 5: 00 pm on Sunday in the city museum It'ssaid that a large number of Chinese paintings, some of which are original works by famous painters like ZhangDaqian and Qi Baishi, will be on display. Besides, there will be various souvenirs to be sold. I know you re veryinterested in traditional Chinese culture, so I can t wait to tell you the news and hope we can go together.Looking forward to your reply.You

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