[天一大联考]陕西省2025-2026学年下学期高三4月联考(SHAX202604)(4.27)化学答案

[天一大联考]陕西省2025-2026学年下学期高三4月联考(SHAX202604)(4.27)化学答案于2026-04-28发布，目前已经汇总了[天一大联考]陕西省2025-2026学年下学期高三4月联考(SHAX202604)(4.27)化学答案的各科答案和试卷，更多试卷答案请关注本网站。

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[天一大联考]陕西省2025-2026学年下学期高三4月联考(SHAX202604)(4.27)政治试题

[天一大联考]陕西省2025-2026学年下学期高三4月联考(SHAX202604)(4.27)化学试题

The former director of the National Elevator Industry, Karen Penafiel, said that elevators' "close" buttons are a complete trick, and that doors will not close any faster no matter how hard you push.
In the 1990s, a law called the "Accessibility Act" was passed. It means all elevators have to stay open long enough to allow disabled people to enter. Only firefighters and elevator workers can really use the buttons with special keys.
But the buttons aren't completely useless. According to psychologists, fake buttons can make you feel better. They give you a sense of control that can help reduce stress. That's why some other buttons in our lives are fake, too.
For example, many offices have fake thermostats. People may feel better when they think they can control the temperature in their workspace. You were told that traffic light buttons could help make traffic signals change faster. But they may not really work either.
However, even when people know these little "white lies", they still push fake buttons. As long as the doors finally close, it seems worthwhile.
John Kounios is a psychology professor at a university. He said he always pushes the traffic light buttons. "After all, I've got nothing else to do while waiting. So why not push the button on the off chance that this one will work "
86．Why do some people push the "close" button in an elevator

5、[天一大联考]陕西省2025-2026学年下学期高三4月联考(SHAX202604)(4.27)语文答案

6、[天一大联考]陕西省2025-2026学年下学期高三4月联考(SHAX202604)(4.27)数学答案

5、[天一大联考]陕西省2025-2026学年下学期高三4月联考(SHAX202604)(4.27)数学答案

6、[天一大联考]陕西省2025-2026学年下学期高三4月联考(SHAX202604)(4.27)英语试题

5、[天一大联考]陕西省2025-2026学年下学期高三4月联考(SHAX202604)(4.27) 答案

所以
则光在水中的传播速度为
故答案为：A。
【分析】核心是根据全反射现象确定临界角，利用折射率与临界角的关系（），结合光在介质中速度与折射率的关系（），推导光在水中的传播速度。
5．【答案】B
【知识点】光的折射及折射定律；光的全反射
【解析】【解答】AB．根据折射定律，可知，即甲图溶液折射率大，浓度较大，故A错误，B正确；

[天一大联考]陕西省2025-2026学年下学期高三4月联考(SHAX202604)(4.27)生物答案