黑龙江省2026届龙东十校联盟高三学年12月月考化学答案于2025-12-15发布，目前免费查试卷答案网站已经汇总了黑龙江省2026届龙东十校联盟高三学年12月月考化学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。

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4、黑龙江省2026届龙东十校联盟高三学年12月月考政治试题


2、黑龙江省2026届龙东十校联盟高三学年12月月考化学试题


We are all guilty of grabbing our phones and scrolling through social media when times get boring. Psychologists have noted in numerous studies over the past decade that individuals engage in social media and other digital media to escape boredom. However, the same studies reveal that consuming such media can actually increase boredom in individuals.
That result may be a product of constantly “switching” between different content online, the endless pursuit of the next piece of media to alleviate present boredom.
To investigate the role that fast- forwarding and switching videos has in boredom, Dr Katy Tam, the lead author of the research and researchers performed two experiments on about 1,200 people. In the first trial, the study participants had two viewing experiences. They both watched a 10- minute video without the option to switch or fast- forward and then had a 10- minute period where they could switch between seven 5- minute videos. In the second experiment, participants watched a 10- minute video in one round and in the other round were allowed to fast- forward or rewind through a 50- minute video.
Participants predicted they would be less bored with the option to switch or fast- forward for both experiments but reported afterward that they found watching one video all the way through to be more engaging, satisfying and meaningful.
Tam said boredom was closely linked to attention. “We feel bored when there’s a gap between how engaged we are and how engaged we want to be,” she said. “When people keep switching through videos, they become less engaged with the videos and they are looking for something more interesting. This can lead to increased feelings of boredom.”
Finally, said Tam, it could be worth taking your time before hitting the fast- forward or skip buttons. “Our research shows that while people fast- forward or skip video s to avoid boredom, this behaviour can actually make them feel more bored,” she said. “Just as we pay for an immersive (沉浸式) experience in a movie theatre, enjoyment often comes from immersing ourselves in videos rather than swiping (滚屏) through them.”
28．What does the underlined word “alleviate” in paragraph 2mean


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5、黑龙江省2026届龙东十校联盟高三学年12月月考英语答案


3、黑龙江省2026届龙东十校联盟高三学年12月月考数学答案


3、黑龙江省2026届龙东十校联盟高三学年12月月考化学答案


6、黑龙江省2026届龙东十校联盟高三学年12月月考英语答案


4、黑龙江省2026届龙东十校联盟高三学年12月月考地理试题


5、黑龙江省2026届龙东十校联盟高三学年12月月考政治答案


反应①：CO2（g）+3H2（g） CH3OH（g）+H2O（g）ΔH1K1
反应②：2CO2（g）+6H2（g） CH3OCH3（g）+3H2O（g）ΔH2K2
现由CH3OH（g）直接合成CH3OCH3（g），反应为CH3OH（g）+CO2（g）+3H2（g） CH3OCH3（g）+2H2O（g）
则该反应的反应热ΔH为______（用含ΔH1，ΔH2的式子表示），平衡常数K为______（用含K1，K2的式子表示）。
Ⅱ.CO合成甲醇的反应为CO（g）+2H2（g） CH3OH（g）ΔH，现有容积均为2L的甲、乙两个恒容密闭容器。在甲中充入2mol CO和4molH2，乙中充入4mol CO和8molH2。甲和乙均在催化剂作用下发生反应，平衡时甲醇的体积分数与温度的关系如图所示。
（3）300℃时，当甲容器中CH3OH的体积分数处于D点时，此时v正______v逆（填“＞”“=”或“＜”）。
（4）曲线Ⅰ代表的是容器______（填“甲”或“乙”）中发生的反应。


B、夏季在校园里闻到阵阵花香的原因是花香中含有的分子是在不断运动的，向四周扩散，使人们闻到花香，该解释正确，不符合题意；
C、氧气和臭氧（O3）性质不完全相同的原因是它们分子的构成不同，不同种的分子化学性质不同，该解释正确，不符合题意；
D、气体可压缩储存于钢瓶中的原因是压强增大，分子间的间隔变小，气体的体积减小，该解释错误，符合题意。
故答案为：D.
【分析】根据分子的特性有分子在运动，分子的运动随温度的升高加快，分子间有间隔，分子有质量且很小，同种分子构成物质的化学性质相同，不同分子构成不同物质的化学性质不同来解答。
12．【答案】B
【知识点】微粒观点及模型图的应用；化学反应的实质


3、黑龙江省2026届龙东十校联盟高三学年12月月考生物答案