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本文从以下几个角度介绍。

    1、2024广州市高三二模历史
    2、2024广州市高三质检历史
    3、2024广州高三历史一模
    4、广州高考历史答案
    5、2024广州市高三调研考试历史
    6、广州市高三阶段训练考试历史
    7、2024广州高三阶段训练历史
    8、2024广州高三阶段训练历史答案

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5、2026届广州市高三阶段训练(8月)生物试题


5.(2023六上·深圳竞赛)In which country is the famous ancient monument Stonehenge(巨石阵)located
A.Greece
B.England
C.Egypt
D.Finland
E.None of the above
6.(2023六上·深圳竞赛)Sarah had planned a surprise party for her best friend, but I accidentally ____ by


二、完形填空(共 20 题;满分 20 分)
阅读下列短文,从每小题所给的 A,B,C,D 四个选项中选出一个可以填入空白处的最佳选项。
(一)
One day, while I was walking in the park, I saw a little girl. She was looking for something. She looked (1). I went up to her and asked, "What are you looking for, little girl " She said, "I lost my doll. It (2) my favorite. I can't find it anywhere." I said, "Don't worry. Let me help you (3)_____ it."
We looked around for a long time, but we still couldn't find the doll. The little girl was about to cry. Just then, I (4)_____ a doll under a tree. I picked it up and asked the girl, "Is this (5)_____ doll " She looked at it and said, "Yes, it's mine! Thank you very much!" She was so (6)_____ that she hugged me tightly.
I felt very happy, too. It made me understand that helping others is helping (7). We should always be ready to help those in (8). Maybe it's just a small thing for us, (9)_____ it can mean a lot to others. So, let's start (10)_____ kindness from now on.
( )1. A. happy B. excited C. worried D. angry


4、2026届广州市高三阶段训练(8月)地理试题


6、2026届广州市高三阶段训练(8月)数学试题


2、2026届广州市高三阶段训练(8月)生物学试题


6、2026届广州市高三阶段训练(8月)政治试题


4、2026届广州市高三阶段训练(8月)生物试题


4、2026届广州市高三阶段训练(8月)生物试题


18.水与人类的生产、生活密切相关。
(1)净水的操作有①吸附 ②沉降 ③过滤 ④蒸馏等多种,其中单一操作净化程度最高的是(填序号) 。净水器中常使用活性炭,主要利用活性炭的 性。
(2)在空气中点燃氢气化合生成水,是认识水组成的重要方法。氢气在空气中燃烧的化学方程式为 。
(3)下列有关水的说法中,正确的是 (填序号)。
A.水是由氢气和氧气组成
B.河水经过过滤后就得到纯水
C.水分子由氢原子和氧原子构成


【答案】B
【知识点】铜及其化合物;性质实验方案的设计
【解析】【解答】A.步骤Ⅰ中产生的蓝色沉淀是Cu(OH)2,故A错误;
B.步骤Ⅱ中,产生的深蓝色溶液主要含,该溶液中的Cu2+因形成[Cu(NH3)4]2+络离子而浓度降低,而蓝色溶液(加入稀盐酸)中Cu2+可以自由移动,浓度较高,因此c深蓝色(Cu2+) < c蓝色(Cu2+),故B正确;
C.铁在碱性溶液中不易钝化,步骤Ⅲ中无明显现象的原因是络合物中Cu2+浓度过低,无法被Fe置换,故C错误;
D.步骤Ⅲ中加入盐酸后,H+与NH3结合生成NH4+,导致配合物释放Cu2+,Fe与Cu2+发生置换反应生成Cu,稀盐酸和铁反应生成氢气,该反应式未体现H+的作用,与实际反应原理不符,故D错误;
故选B。


3、2026届广州市高三阶段训练(8月)化学答案