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试题答案

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    1、惠州市2024高三第二次调研历史"
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2、惠州市2025-2026学年高二上学期12月联考地理试题


1、惠州市2025-2026学年高二上学期12月联考生物试题


（2024高一上·钱塘期中）Think about the last time you did something that you found difficult. Was it working out a puzzle or working hard on your math homework
Can you remember the expression you had on your face Most people will press their lips together and frown (皱眉) when they are doing something they find difficult. This is normally seen as a sign of effort. Now we've found that it can also say more than that.
A recent study at the University of Portsmouth in England suggests that the human expression of effort and frustration is our way of asking others for help.
Scientists at the university gave children and chimpanzees (黑猩猩) an impossible puzzle to work out. When the children couldn't work out the puzzle, their faces expressed determination and effort. The chimpanzees' did not.
Humans and chimpanzees have many facial expressions that share the same meaning. A human smile is the same as a chimpanzee showing its teeth in happiness.
Scientists believe that over time, humans have evolved to use this facial expression to ask for help. We have also learned to respond to it by offering help.
According to Dr. Albert Mehrabian, a well-known professor of psychology at the University of California, Los Angeles, only 7% of human communication happens through words and 55% is through body language. Therefore, understanding expressions is second nature to human beings.


/ 让学习更有效 新课备课备考 | 英语学科
/ 让学习更有效 新课备课备考 | 英语学科
2025-2026牛津译林版六年级英语上册核心考点精练
Unit 2 What a day!
考点13：答语匹配
学校:___________姓名：___________班级：___________考号：___________
A．I lost my robot. B．I found it in the box. C． Yes. I like flying kites very much. D．It's sunny. E. She watched a film. F. Yes, there was.


1、惠州市2025-2026学年高二上学期12月联考英语答案


4、惠州市2025-2026学年高二上学期12月联考英语答案


4、惠州市2025-2026学年高二上学期12月联考政治答案


3、惠州市2025-2026学年高二上学期12月联考语文答案


2、惠州市2025-2026学年高二上学期12月联考数学试题


1、惠州市2025-2026学年高二上学期12月联考数学答案


【18题答案】


均属于放热反应，B、D项不符合题意：Ba(OH)2·8HO和NHCI反应属于复分解反应，C项不符合题意。
4.D锌和盐酸反应的实质：Zn十2H中一Zn++H◆，影响反应速率的因素有：镁带的表面积、H+的浓度及
反应体系的温度；C1没有参加离子反应，对反应速率没有影响，D项符合题意。
5.CCH的燃烧热是指1olCH与O2反应生成CO2(g)与H2O(1)时所释放的热量，所以可知A、B项的热
化学方程式的△H无法判断其大小，即A,B两项错误，C项正确；该反应为放热反应，其△H0,D项错误
6.B1时刻，反应未达到平衡状态，（正）>（逆），A项正确：0一2时间内，X、Z的平均速率之比为0.8：1,2
=2:3,B项错误；由图可知，X为反应物，Y、Z为生成物，其化学计量数之比等于对应物质的化学反应速率


3、惠州市2025-2026学年高二上学期12月联考化学答案