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本文从以下几个角度介绍。

    1、2024自贡二诊
    2、2024自贡二诊九市联考
    3、2024自贡二诊
    4、2024自贡三诊
    5、自贡2024第二次诊断性考试
    6、自贡二诊2024
    7、自贡二诊2024
    8、2024自贡三诊
    9、2024自贡二诊九市联考
    10、自贡市2019到2024高二下学期期末考试试卷

2、自贡市高2025届第三次诊断性考试(自贡三诊)数学试题


4、自贡市高2025届第三次诊断性考试(自贡三诊)生物试题


B.She did the most push-ups in 4 hours, 30 minutes and 11 seconds.
C.She thinks doing push-ups and planks are the key to aging powerfully.
D.She tells us age can’t stop us from being amazing and powerful.
61.What is this passage mainly about
A.An old man’s everyday life. B.The story of an “ageless” grandma.
C.How to break the world records. D.The grandchildren’s love for their grandma.
【答案】59.C 60.D 61.B


1. popular 57. story 58. but 59. grows 60. help
2. interest 62. his 63. In 64. best 65. box
六、书面表达(15分,参考范文)
Dear Alice,
I'm sorry to hear that you feel tired, nervous, and easily angry recently. These feelings can affect your life and study, so here are some suggestions to help you.
First, make sure you get enough sleep. Aim for 7-8 hours nightly to relax your mind. Second, eat a balanced diet with more vegetables and less junk food. Third, do regular exercise like walking or dancing to reduce stress. Finally, take time to do what you love, like reading or listening to music, to stay positive.
I believe these changes will help you feel better soon. Stay strong and take care of yourself!


3、自贡市高2025届第三次诊断性 (自贡三诊)数学试题


3、自贡市高2025届第三次诊断性考试(自贡三诊) 试题


4、自贡市高2025届第三次诊断性考试(自贡三诊)语文试题


2、自贡市高2025届第三次诊断性考试(自贡三诊)化学试题


2、自贡市高2025届第三次诊断性考试(自贡三诊)化学试题


3、自贡市高2025届第三次诊断性考试(自贡三诊) 试题


B.二氧化钛的化学式为O2Ti
C.x=2,钛原子易失去电子,易形成Ti2+
D.Ti的相对原子质量为47.87g
【答案】C
【详解】A钛是“金”字旁,属于金属元素,核外电子层数等于该元素所在的周期数,故钛元素位于第四周期,故A错误;
B、化合物化学式的书写一般规律:金属在前,非金属在后;氧化物中氧在后,原子个数不能漏,正负化合价代数和为零,化合价数值约到最简交叉写在元素右下角,则二氧化钛的化学式为TiO2,故B错误;
C、在原子中,核电荷数=质子数=核外电子数,则有22=2+8+10+x,x=2,其最外层电子数小于4,易失去电子,形成带两个单位正电荷的阳离子,离子符号就是在元素符号的右上方,标出该离子所带的电荷数及正负,数值在前,正负号在后,故钛离子表示为Ti2+,故C正确;


(二)常见金属的冶炼
(1)金属冶炼就是要把金属从化合态变为游离态。
(2)常见的冶炼方法
实验一:氢气还原氧化铜
1.实验原理:氢气具有_还原性_,能在加热条件下与氧化铜反应生成铜单质。反应的化学方程式为__H2+CuO Cu+H2O___。
2.实验装置
3.实验步骤


3、自贡市高2025届第三次诊断性考试(自贡三诊)化学答案