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试题答案

本文从以下几个角度介绍。

    1、2024-2024学年度第二学期期末考试高二化学
    2、2024学年第二学期高中期末调测高二化学
    3、2024-2024学年高中毕业班阶段性测试二化学
    4、2024学年第二学期期末调研测试卷高一化学
    5、2024-2024学年高二化学下学期期末质量检测
    6、2024-2024学年第一学期高二年级期中质量检测化学
    7、高二下学期化学月考试卷
    8、高二下学期化学第一次月考试卷
    9、2024年高二下学期期末考试化学
    10、2024年高二化学学业水平考试

3、[学林教育]2024~2025学年度第二学期高一第二次月考政治A(人教版)试题


4、[学林教育]2024~2025学年度第二学期高一第二次月考化学A(人教版)试题


When I started my volunteer work I could not make myself understood. I was rather nervous, though the visitors were smiling at me all the time. I knew it was mainly because I hadn’t prepared well enough. I decided to change.
After coming back home, I printed out all the information about the exhibition (展览). I read every word carefully and marked the key points. It was quite a big collection, with over fifty pieces of artworks on show. I chose twenty of them as the main focus of my guidance. Then, I divided them into four groups. Every day, I tried to remember one of my guiding scripts (讲稿) and practiced it. After a week of hard work, I kept all the key points from my scripts in my heart and then I practiced retelling them again and again in front of my family. The next day at the Power Station of Art, I managed to give a smooth and detailed introduction to the visitors.
I was glad that I wasn’t beaten by failure. Now I’ve realized that you will never know what you can do until you try your best. Working as a volunteer docent at the Power Station of Art was such a valuable experience for me!
54. How did the writer feel when she was chosen to be a volunteer docent
A. Embarrassed. B. Nervous. C. Shy. D. Lucky.
55. What does the third paragraph mainly talk about
A. How to prepare for the exhibition. B. Where to retell the key points.


A．Before dinner. B．During dinner. C．After dinner.
【答案】A
【听力】W：Jack, would you mind talking about tomorrow’s plan before dinner this evening
M：Not at all. I certainly don’t want to talk about it during our dinner.
( )8．Which book does Linda like reading
A．The story books. B．Science books. C．Picture books.
【答案】A


5、[学林教育]2024~2025学年度第二学期高一第二次月考生物A(人教版)答案


6、[学林教育]2024~2025学年度第二学期高一第二次月考数学A(人教版)答案


1、[学林教育]2024~2025学年度第二学期高一第二次月考历史A(人教版)答案


3、[学林教育]2024~2025学年度第二学期高一第二次月考数学A(人教版)答案


3、[学林教育]2024~2025学年度第二学期高一第二次月考英语A(人教版)试题


5、[学林教育]2024~2025学年度第二学期高一第二次月考政治A(人教版)答案


第四节　羧酸　羧酸衍生物
第1课时　羧酸
1.B　[解析] 烃基(或氢原子)与羧基相连的化合物是羧酸,A错误;饱和一元脂肪酸的组成符合通式CnH2nO2,B正确;高级脂肪酸在常温下呈固态,C错误;书写官能团的结构简式不能漏掉“—”,羧基应该写作
—COOH,D错误。
2.C　[解析] 乙二酸为二元脂肪酸,分子中含有两个羧基;苯甲酸中含苯环,不属于饱和一元脂肪酸;硬脂酸(C17H35COOH)分子中含有链烷基和一个羧基,属于饱和一元脂肪酸;石炭酸为苯酚,属于酚类,不属于羧酸。
3.B　[解析] 该有机物含有一个—COOH,属于羧酸,选含有—COOH而且最长的碳链为主链,主链上共有五个碳原子,编号时从—COOH上的碳原子开始,在2、3号碳原子上各有一个甲基,该有机物的名称为2,3-二甲基戊酸。
4.B　[解析] 该分子中不含苯环,不属于芳香族化合物,A错误;该分子中含有羟基、羧基2种含氧官能团,B正确;分子中含有碳碳双键,可以发生加成反应,含有羟基,可以发生氧化反应,烷烃基可以发生取代反应,但无法发生水解反应,C错误;羟基及羧基均可以与钠反应生成氢气,故共生成2 mol H2,D错误。


6．某化学兴趣小组用以下装置探究炼铁原理。关于该装置和反应过程描述错误的是
A．反应前要先检查装置气密性
B．加热前要先通CO，加热后B中出现浑浊
C．已知方框中连接的是丙和丁，导管口的连接顺序为a→b→c→d
D．这种方法“炼”出的铁与工业上炼出的生铁在组成上最大的区别是不含碳
7．用下图进行有关碳及其氧化物的性质实验。下列说法中不正确的是
A．一段时间后，甲装置中黑色炭粉减少，丁中澄清石灰水变浑浊


3、[学林教育]2024~2025学年度第二学期高一第二次月考生物A(人教版)答案