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试题答案

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6、河北省9+1联盟2025-2026学年高三上学期调研考试历史试题


3、河北省9+1联盟2025-2026学年高三上学期调研考试历史试题


17．—Do you know Zhong Nanshan
—I’m sure I’ve seen him ________, but I can’t remember the right place.
A．anywhere B．nowhere C．somewhere
18．— They ________ be leaving for Yunnan next month. But I’m not sure.
— We can ask your father about it.
A．can B．must C．might D．should
19．—Can you tell me what time it is


One morning I awoke in my old car on a country road in Ireland and saw a single house. The water in my thermos (保温瓶) had gone cold, so I knocked on the door of the house. A woman opened it. I asked her for some hot water. But she wouldn’t let me get away with just that! I was invited indoors. She asked me to sit at the table and have breakfast with her family. They filled my thermos before I left.
I was greatly moved. And I decided to pass the kindness on. The other day I met a young man who had been driving around to look for a parking lot. He looked increasingly upset. I was glad that I was able to point one out to him. His thankful smile was the biggest reward (奖赏) for me.
21. The writer bought the old car in order to ________.
A. serve the public B. travel more easily
C. take the trip alone D. save more money
22. Why did the writer camp in his car
A. He was short of money. B. It was his habit.


4、河北省9+1联盟2025-2026学年高三上学期调研 语文试题


3、河北省9+1联盟2025-2026学年高三上学期调研考试数学试题


5、河北省9+1联盟2025-2026学年高三上学期调研考试语文试题


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6、河北省9+1联盟2025-2026学年高三上学期调研考试生物试题


4、河北省9+1联盟2025-2026学年高三上学期调研考试生物学试题


第2章 空气与水资源测试卷
(时间：60分钟　　满分：100分)
　　　　　　　　　　　　　　　　　　　
一、选择题(每小题3分，共36分)
1．(2024·重庆)空气成分中含量多且可用作保护气的是( A )
A．氮气 B．氧气 C．稀有气体 D．二氧化碳
2．(2024·青岛)下列物质属于纯净物的是( B )


某化学兴趣小组的同学利用盐酸进行了如下实验，请回答下列问题：
（3）刚开始一段时间内，A试管中反应的实验现象为　 　。
（4）B试管中没有看到明显的实验现象。同学们经过讨论，并实施实验，验证确实发生了化学反应。请你利用本项目中自制酸碱指示剂设计一个实验方案证明 B中发生了化学反应　 　。
（5）小组同学对碱与酸能否发生化学反应又开展如下探究。利用图1装置探究氢氧化钠溶液和稀盐酸反应，将注射器内液体全部推入，测得一段时间内pH的变化如图2所示，证明了氢氧化钠和稀盐酸反应。曲线中d点所表示的溶液中溶质为　 　。
任务四：指示剂的发展
（6）兴趣小组利用自制的指示剂，测出一个花盆内的土壤呈酸性，建议采用　 　改良该土壤。
【答案】过滤；浓盐酸易挥发，挥发出的氯化氢气体溶于空气中的水蒸气形成盐酸小液滴；铁锈溶解，溶液由无色变黄色；在装有氢氧化钠溶液的试管中滴加少量的紫甘蓝，向其中逐滴滴加稀盐酸，观察到溶液由绿色变成蓝紫色，说明盐酸与氢氧化钠发生了反应；氯化钠、氯化氢；熟石灰


3、河北省9+1联盟2025-2026学年高三上学期调研考试化学答案