广东省江门市2025年高考模拟考试(江门一模)历史答案于2025-03-04发布,目前免费查试卷答案网站已经汇总了广东省江门市2025年高考模拟考试(江门一模)历史答案的各科答案和试卷,更多试卷答案请关注免费查试卷答案网站。

试题答案

本文从以下几个角度介绍。

    1、江门市2024年高考模拟考试历史
    2、江门一模2024历史
    3、江门一模2024
    4、江门市2024年高考模拟
    5、广东省江门市2024高三模拟
    6、高三江门一模考试2024
    7、2024广东省江门一模历史试卷
    8、江门二模历史
    9、2024江门高考二模
    10、2024江门市高三一模

4、广东省江门市2025年高考模拟考试(江门一模)地理试题


6、广东省江门市2025年高考模拟考试(江门一模)生物试题


C. selling
D. borrowing
49. A. failure
B. success
C. mistake
D. accident
50. A. shame


23. What priority do the returning campers enjoy
A. Working as a mentor directly. B. Joining without extra payment.
C. Registering ahead of schedule. D. Providing service for the disabled.
B
On a sunny Tuesday morning after 8:30, Kailyn Roush smiles at the Columbus Zoo. With 30 minutes before opening, she can film a “keeper talk” video. She and her classmate Maddie Hehl wrote and edited the script (脚本). They go to the Asia Quest exhibit to film red pandas Kora and Santi. As the red pandas move, they share facts and encourage conservation.
Kailyn, who has wanted to work in a zoo at 5, applied during high school and secured a place in a program jointly run by the zoo and the Delaware Area Career Center (DACC), which provides career and technical training for students and adult learners. Zoo School, as it’s called, is one of many programs from the center. It’s also part of something that Ohio schools champion: Career and Technical Education (CTE).
“Enrollment (招生) trends show a growing interest in CTE programs. Students are passionate about career-focused education in high school. As the economy has developed, there’s a broader recognition that CTE enhances academic learning, doesn’t prevent pursuing a four-year degree, and enriches students’ life. There’s a growing understanding that college isn’t the only place to acquire valuable skills for a good career.” says Margaret Hess, director for the Ohio Association of Career Technical Superintendents.


2、广东省江门市2025年高考模拟 (江门一模)历史答案


5、广东省江门市2025年高考模拟考试(江门一模)化学答案


5、广东省江门市2025年高考模拟考试(江门一模)地理答案


2、广东省江门市2025年高考模拟考试(江门一模)数学答案


4、广东省江门市2025年高考模拟考试(江门一模) 试题


2、广东省江门市2025年高考模拟考试(江门一模)化学答案


【详解】A.用中和萃取法在乙酸乙酯中除去杂质乙酸,在乙酸乙酯中加入过饱和碳酸氢钠,中和乙酸。又因为乙酸乙酯不溶于水,使用分液漏斗分离有机相和水相即可。因此操作为加入饱和NaHCO3溶液充分振荡,分液、洗涤、干燥,故A项正确;
B. 除去硝酸钾中的氯化钠,利用溶解度受温度的影响不同来除杂,硝酸钾的溶解度随温度变化大,而氯化钠的随温度几乎不变。将样品溶解,加热蒸发,浓缩结晶,趁热过滤,结晶为硝酸钾。加入硝酸银会引入新的杂质,故B项错误;
C. 除去碳酸钠中的碳酸氢钠,利用两者稳定性的差异进行除杂,碳酸氢钠受热易分解,2NaHCO3Na2CO3+H2O+CO2↑,而碳酸钠较稳定,受热不分解。故C项正确;
D. 除去乙醇中混有的水,可加入生石灰,生石灰与水反应生成氢氧化钙,而生石灰不与乙醇反应,再通过蒸馏,乙醇沸点低挥发出来得到酒精,故D项正确;
故答案选B。
考向5 有机物分离提纯为主线的制备型实验
24.(2024·山西·模拟预测)在空气中易被氧化为。实验小组利用如图所示装置测定气体的体积,进而确定久置试样的纯度。下列有关改进措施和误差分析的说法中错误的是


赶出碱式滴定管
C.
稀释浓疏酸
中的碘并分液
1.00mol·L-1NaC1溶液
乳胶管中的气泡
8.关于氮、硫及其化合物的说法,不正确的是


3、广东省江门市2025年高考模拟考试(江门一模)化学答案