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试题答案

本文从以下几个角度介绍。

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4、湘潭市2025-2026学年第一学期高三12月学情检测地理试题


4、湘潭市2025-2026学年第一学期高三12月学情检测生物试题


阅读下面短文，简略回答问题。
For pupils at a village school in Yiyuan County, Shandong Province, Ren Jilan has not only been teaching them but also showing them how to face life bravely, especially when things just don't seem to be working out.
Ren came from a poor family in a village in Yiyuan County. She had to do more housework than other children when she was young because both her father and mother were in ill health. With support from her relatives and villagers, Ren completed her 12 year school study and was accepted by Qufu Normal University. But the four year university experience didn't go well. Her father died and then she had to care for her mother. At the difficult moment, it was her teacher, Li Zhenhua, who offered help.
After graduation, Ren was faced with chances to work as a teacher in cities, but she chose to return to her hometown and work as a village teacher at Fuluping Primary School. “My teacher Li gave up a well paid job in a big city to teach children at the village school. I'd like to follow in his footsteps，” Ren says.
Fuluping Primary School is 50 kilometers away from downtown Yiyuan County. It was once among the schools with the worst conditions in the county. But the school has its own beautiful and comfortable playground now.
Ren works hard on teaching and taking care of her students. She also spends a part of her money helping two poor students. She received the China Youth May 4th Medal—the country's top honor for excellent young people.
“Life was not easy for me, but luckily I had nice people around me. They gave me a helping hand when I was in need, and it encouraged me to go on，” says Ren.


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4、湘潭市2025-2026学年第一学期高三12月学情检测生物答案


2、湘潭市2025-2026学年第一学期高三12月学情检测政治答案


6、湘潭市2025-2026学年第一学期高三12月学情检测政治答案


4、湘潭市2025-2026学年第一学期高三12月学情检测英语试题


2、湘潭市2025-2026学年第一学期高三12月学情检测生物答案


【答案】B
【解析】相同温度时溶解度SCO3将天青石矿粉和NH.HCO3溶液、一水合氨充分混合反应，过滤后得到的粗SrCO,中含有杂
质SiO2、BaSO4。粗SCO,焙烧分解转化成氧化锶和二氧化碳，氧化锶与水反应生成易溶于
水的氢氧化锶，难溶的SiO2和BaSO4进入浸渣中，浸液中含有Sr(OH2,此时加入NH)2SO4
溶液，生成沉淀SSO4,据此分析解题。A.由分析可知，“沉淀”反应是
(NH4),SO,+Sr(OH),=SSO4+2NH,个+2H,O,气体X是NH,可以循环利用，A正确：


实验现象 产生白色胶状沉淀，沉淀不溶于过量氨水。
实验说明 ①实验室利用可溶性铝盐(如 AlCl3)制备 Al(OH)3，应选用氨水，而不用NaOH 溶液。 ②实验室也可利用可溶性偏铝酸盐(如NaAlO2)制备Al(OH)3，应选用二氧化碳，而不用盐酸。
（2）氢氧化亚铁
实验装置
实验原理 Fe2+＋2OH-=== Fe(OH)2↓(白色)、4Fe(OH)2＋O2＋2H2O===4Fe(OH)3
实验用品 FeSO4 溶液、NaOH 溶液；试管、长胶头滴管。
实验步骤 在1支试管里加入少量FeSO4 溶液，然后滴入NaOH 溶液。观察并描述发生的现象。


3、湘潭市2025-2026学年第一学期高三12月学情检测化学答案