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试题答案

本文从以下几个角度介绍。

    1、唐山市2024-2024学年度高三年级摸底考试化学"
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4、河北省唐山市十校2025-2026学年高三上学期期中考试(12月)政治试题


1、河北省唐山市十校2025-2026学年高三上学期期中考试(12月)化学试题


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A. She wanted to become a role model. B. She inspired others to learn physics.
C. Tatiana has a positive impact on her. D. Tatiana has been very strict with her.
C
In Finland, it’s a basic duty for the government to provide the public with sporting possibilities. That thinking started in the 1970s, when the government built gyms in even the smallest towns. Now, there are about 30,000 sports facilities across the country. Walkways and bike paths snake through the cities. Public swimming pools are everywhere. Here you can just step out of your door and do sports.
Finns do just that. Half of women and a third of men bike to work. About a fifth of the country belongs to sports clubs. Some people even play sports at work. For example, every Wednesday morning, a group of scientists at the University of Jyv skyl leave their desks to play “futsal”, an indoor form of soccer, in a gym across the street. It’s one of the most popular team sports in the country, along with floor ball and Finnish baseball. A nearby chocolate factory has a gym and offers aerobics classes.
“Employers started to encourage sports participation about a century ago in the forestry industry,” says Hanna Vehmas, a sports scientist at the University of Jyv skyl . “Nowadays, 90% of employers support their employees’ physical activities in some way. Each year, they spend an average of about $220 per employee for physical activities.”
One reason why employers tend to support their employees’ physical activities is due to a tax break. Businesses can deduct (扣除) money spent on employees’ physical well-being.


4、河北省唐山市十校2025-2026学年高三上学期期中 (12月) 答案


1、河北省唐山市十校2025-2026学年高三上学期期中考试(12月)生物学答案


3、河北省唐山市十校2025-2026学年高三上学期期中考试(12月)历史答案


5、河北省唐山市十校2025-2026学年高三上学期期中考试(12月)数学答案


4、河北省唐山市十校2025-2026学年高三上学期期中考试(12月)历史试题


4、河北省唐山市十校2025-2026学年高三上学期期中考试(12月) 答案


(二)利用以下反应制备生物燃料十五烷：(棕榈酸)(十五烷)。其他条件相同时，在三种不同的催化剂作用下反应10h后，棕榈酸的转化率与十五烷的选择性如图所示。
（5）该条件下应选择的催化剂是___________。
（6）氧空位(，即氧原子离开晶体出现空缺)是金属氧化物缺陷的一种。中氧空位的形成会伴随含量的增加，若非掺杂其他金属离子时，理论上形成一个，同时产生___________个。
17. 吡唑类化合物G是一种重要的医用中间体，其合成路线如下：
已知：Ⅰ．R1CHO+R2CH2COOR3
Ⅱ．
回答下列问题：


C．萃取、分液、升华 D．加热、蒸馏、蒸馏
【强化训练1-2】对羟基苯乙酮()可作化妆品的防腐剂。某实验小组用乙酸乙酯从水溶液中提取对羟基苯乙酮，进行如下实验，操作规范，但所得产品中混有较多的乙酸乙酯。已知：对羟基苯乙酮的沸点：148℃；乙酸乙酯的沸点：76.8℃。下列叙述正确的是( )
A．分液时，水层、有机层依次从分液漏斗下口放出
B．萃取剂总量相同，分两次萃取的优点是提高萃取率
C．蒸馏需要用到的仪器：蒸馏烧瓶、球形冷凝管、温度计等
D．对羟基苯乙酮易与乙酸乙酯形成分子间氢键，有利于萃取和蒸馏
变式2 变考法


3、河北省唐山市十校2025-2026学年高三上学期期中考试(12月)生物答案