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本文从以下几个角度介绍。

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    4、天一联考高一期末历史
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5、[天一大联考]2024-2025学年湖南省高一联考(7月)地理试题


6、[天一大联考]2024-2025学年湖南省高一联考(7月)生物试题


3. How many lessons do you have


71. 72. 73. 74. 75.
阅读下面短文，在空白处填入一个适当的单词或括号内单词的正确形式。
I still remember my kindergarten (幼儿园) teacher, Mrs. White. She looked just like Snow White, because they had the same bright eyes and short dark hair.
We used to write a lot. And I would show what I wrote to Mrs. White for correction. She would look at my writing and see many mistakes in it. But she never made any red correction and she always gave 66 star. I was feeling proud of my writing each time I got a star. But it worried my mother when she found I spelled the words 67 (bad). So one day, when she met Mrs. White at a parent teacher meeting, Mom angrily asked her 68 she never corrected my mistakes.
Mrs. White said, “The children are just beginning to get excited about using words. The 69 (educate) of spelling and grammar can wait. But we can’t stop their interest with a red pen. I want to keep frustration (挫败感) away 70 their young hearts.” My mother understood Mrs. White and she regretted 71 (talk) to her in an awful manner. And all the parents 72 (support) Mrs. White’s teaching way. Finally, all my classmates managed 73 (learn) to use words with loving care and confidence like that.
If Mrs. White made the same 74 (choose) as most teachers — to use her red pen more often, I probably wouldn’t be telling you about this now. Whenever I look back on those encouraging stars from Mrs. White, I feel they just look like real shiny stars in the night sky. She was such a wonderful teacher, who tried to use a red pen 75 (little) to keep the joy, wonder and excitement in a child’s mind.
Thanks to Mrs. White, I have no fear about writing. Also, I’m not afraid of any mistake in my life!


5、[天一大联考]2024-2025学年湖南省高一联考(7月)物理答案


3、[天一大联考]2024-2025学年湖南省高一联考(7月)历史答案


5、[天一大联考]2024-2025学年湖南省高一联考(7月)英语答案


1、[天一大联考]2024-2025学年湖南省高一联考(7月)语文答案


5、[天一大联考]2024-2025学年湖南省高一联考(7月)生物学试题


5、[天一大联考]2024-2025学年湖南省高一联考(7月)物理答案


(3)乙同学结合甲同学的信息,推测现象①出现的黑色沉淀为Ag,可能还含有Ag2O、Ag2S,并设计实验进行验证。
已知:ⅰ.浓硝酸能将Ag2S转化为Ag+和S;
ⅱ.Ag2O能溶解在浓氨水中形成银氨溶液,而Ag2S和Ag均不能。银氨溶液中存在平衡:Ag++2NH3 [Ag(NH3)2]+。
实验步骤 现象 结论
取少量黑色沉淀,加入适量浓氨水,振荡,静置后,取少量上层清液于试管中,滴加稀盐酸 无明显现象 　　　
另取少量黑色沉淀,加入适量浓硝酸,振荡,加入试剂a　　　　　(填化学式) 　　　　,沉淀溶解,加入试剂a产生白色沉淀 黑色沉淀含Ag2S
(4)为确定黑色沉淀中是否存在Ag,兴趣小组成员查阅资料发现:在电解质溶液中,银表面存在Ag+,加入浓HI溶液可使Ag溶解形成[AgI2]-和H2,Ag溶解的原因一方面与电极电势有关,另一方面是由于　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　(请从平衡移动的角度分析)。加入浓HI溶液后,未观察到气泡产生,证明黑色沉淀中不存在Ag。


1．[2024·海南海口长流中学检测]人类已知的化合物种类最多的是(　　)
A．第ⅠA族元素的化合物
B．第ⅢA族元素的化合物
C．第ⅣA族元素的化合物
D．第ⅦA族元素的化合物
2．[2024·安徽界首检测]下列关于有机物结构特点的说法中，正确的是(　　)
A．CH4分子只含有极性键


3、[天一大联考]2024-2025学年湖南省高一联考(7月)化学答案