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试题答案

本文从以下几个角度介绍。

    1、[石室金匮]2025届高考专家联测卷六(押题卷)数学试题


    5、[石室金匮]2025届高考专家联测卷六(押题卷)生物试题


    高一下英语科第一次阶段考试


    C．introduce the activities and rules
    D. welcome visitors to the zoo
    B
    How would you go without your smartphone For many of us, our smartphone is the first and last thing we look at every day. We depend on it to do a number of tasks and connect with our friends and family.
    The inventor of the first mobile phone, American engineer Martin Cooper, thinks many people become addicted to our phones. In a BBC interview, he suggested people stop scrolling (刷屏) and “get a life”. However, once we start scrolling or watching videos, we just can't kick the habit.
    A study from King's College London found young people couldn't control the time they spend on their phones. Such behavior means that students become “anxious” or “upset” if they are not allowed to be on the phone continuously.
    Interestingly, another study by the London School of Economics Science finds we don't just look at our phones when we receive text or email messages. People feel an automatical (自动的) need to check their phones, just as a smoker would light a cigarette (烟)．There're several ways to solve this problem. One way is to reward (奖励) students if they are away from their phones. Another choice is changing your smartphone to a dumbphone that has none of the things to turn your attention away. But mainly, we just need to look up more and live in the real world!


    5、[石室金匮]2025届高考专家联测卷六(押题卷)政治试题


    2、[石室金匮]2025届高考专家联测卷六(押题卷)政治试题


    2、[石室金匮]2025届高考专家联测卷六(押题卷)地理试题


    3、[石室金匮]2025届高考专家联测卷六(押题卷)地理试题


    1、[石室金匮]2025届高考专家联测卷六(押题卷) 试题


    5、[石室金匮]2025届高考专家联测卷六(押题卷) 试题


    14．pH=12的溶液中可能含有Fe3+、K+、、、等离子中的一种或几种，为了检验该溶液中含有的离子，进行如下实验并分析：
    (1)该溶液pH=12，证明不存在的离子是 。
    (2)取少量该溶液于试管中，滴加适量氯化钡溶液，产生白色沉淀，再加入过量的稀盐酸，沉淀部分溶解。该溶液中一定存在的离子是 ，可能存在的离子是 。
    15．请同学们搭乘“化学地铁”一起畅游物质世界吧！如图所示，列车上的物质可与各站的对应物质发生一步进行的反应，方可驶向下一站。“2—5号站”各站的对应物质属于不同类别的纯净物。
    (1)若列车上的物质为“碳酸钠溶液”。
    ①列车途经“1号站”时，若指示剂为紫色石蕊溶液，溶液变 色。
    ②列车途经“2号站”时，若氧化物为二氧化碳，二氧化碳与碳酸钠溶液反应生成碳酸氢钠(NaHCO3)的化学方程式为 。


    ⑤碳、氢元素的质量比为3∶1
    ⑥碳、氢元素的质量比为4∶1
    ⑦碳、氢原子的个数比为1∶3
    ⑧碳、氢原子的个数比为1∶4
    A. ①②⑤⑧ B. ①③⑤⑧ C. ①④⑥⑦ D. ①②⑤⑦
    二、填空题(每空一分，共40分)
    16. 请按要求回答下列问题：


    3、[石室金匮]2025届高考专家联测卷六(押题卷)化学答案