[天一大联考]高三2025年普通高等学校招生全国统一考试诊断卷〃A卷生物(湖南专版)答案

[天一大联考]高三2025年普通高等学校招生全国统一考试诊断卷〃A卷生物(湖南专版)答案于2025-04-16发布，目前免费查试卷答案网站已经汇总了[天一大联考]高三2025年普通高等学校招生全国统一考试诊断卷〃A卷生物(湖南专版)答案的各科答案和试卷，更多试卷答案请关注免费查试卷答案网站。

本文从以下几个角度介绍。

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4、[天一大联考]高三2025年普通高等学校招生全国统一考试诊断卷·A卷生物(湖南专版)试题

25．Is he reading books ( )
给问句选择合适的答句。
A．The baby is crying. B．Yes, he is. C． She is behind you. D．Danny. E. No, I’m not.
26．Who is sleeping ( )
27．What is the baby doing ( )
28．Are you talking to me ( )
29．Where is the woman ( )

Waiting in line, sitting in the middle seat, experiencing delays-there’s a long list of unpleasant things about flying on planes. And here’s another one that worries us a lot: getting blocked (堵住的) ears. It’s also sometimes called “airplane ear”. But why do we get it
It happens because of changes in air pressure. When a plane takes off and moves higher, the air pressure outside our ears goes down quickly because the air is thinner at higher altitudes. However, there is still air from ground level inside our ears. This air is thicker and at a higher pressure. So there is a difference in pressure between the air inside our ears and outside our ears.
This difference in air pressure causes the air inside our ears to push against the eardrum (耳膜), because air moves from areas of high pressure to areas of low pressure. The air pushing against the eardrum makes our ears feel blocked and uncomfortable. When the air comes out, our ears “pop”. Some people really don’t like this feeling, either.
Drinking water, swallowing, yawning (打哈欠) or eating hard sweets can help to clear our ears. The air inside our ears is in the Eustachian tube (咽鼓管), which connects the middle ear to the back of the nose and throat. Swallowing helps encourage this tube to open a little wider, which helps let out the air inside our ears.
However, swallowing and yawning don’t always work. Our ears sometimes stay blocked for longer, which may hurt. If your ears take a really long time to clear even when you get off the plane, you may need to see a doctor.
62. What does “it” in Paragraph 1 refer to
A. Waiting in line. B. Getting blocked ears.

4、[天一大联考]高三2025年普通高等学校招生全国统一 诊断卷·A卷地理(湖南专版)答案

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(5)铁离子可以将碘离子氧化成单质碘，加入1 mL CCl4充分振荡、静置，溶液分层，上层溶液呈浅绿色，下层CCl4层呈紫红色。(6)四个小组的同学通过实验探究，得出结论：Fe2+有还原性；Fe3+、Cl2、I2的氧化性由大到小的顺序是Cl2>Fe3+>I2。
为了检验Fe3O4中铁元素的化合价，设计了以下实验：
Fe2+、Fe3+的检验
[问题1]　甲中溶液黄色加深，说明什么？
提示：甲中现象证明Fe3O4与稀硫酸反应后的溶液中存在Fe2+，因为Fe2+具有还原性，能被H2O2溶液氧化为Fe3+，使溶液黄色加深。
[问题2]　乙中溶液有红褐色沉淀产生，能证明溶液中一定无Fe2+吗？
提示：乙中现象不能证明反应后的溶液中有Fe2+，因为Fe(OH)3的颜色会覆盖Fe(OH)2的颜色。

“195.1”是铂元素的相对原子质量，C正确。
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元素周期表的结构
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二
二、元素周期表的结构

3、[天一大联考]高三2025年普通高等学校招生全国统一考试诊断卷·A卷化学(湖南专版)答案