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试题答案

本文从以下几个角度介绍。

    1、2024昆明市第一中学第五次联考
    2、昆明市第一中学2024高三第八次
    3、昆明市一中高三第9次2024
    4、昆明市一中2024高三第二次

2、昆明市第一中学2025届高三第八次联考(3月)地理试题


3、昆明市第一中学2025届高三第八次联考(3月)生物试题


A. By car. B. By bike. C. By taxi.
20 What does Li Lei often do in summer
A. He often goes shopping. B. He often goes fishing. C. He often goes swimming.
笔试部分(满分100分)
二、单项选择(每小题1分,满分15分)
1. — What a good-looking lady!
— That’s our English teacher, Miss Li. She has a good ________ in clothes.


② The robotaxi also brings about other problems. A video showed that a robotaxi in Wuhan stopped in front of a
Matt, from France bag on the road, causing a traffic jam. In another video, two robotaxis were facing each other, not knowing what to
do next. What’s worse, a robotaxi caused an accident because it didn’t see a person on the road. And even after the
accident, people didn’t know who was responsible (负责任的) for it.
Robotaxi companies think it’s important to make roads safer, so they are working hard to improve their products and
We were nervous about our trip at first. But to our surprise, there are a lot of
work out the problems.


2、昆明市第一中学2025届高三第八次联考(3月)历史试题


2、昆明市第一中学2025届高三第八次联考(3月)物理试题


6、昆明市第一中学2025届高三第八次联考(3月)生物学试题


2、昆明市第一中学2025届高三第八次联考(3月) 试题


2、昆明市第一中学2025届高三第八次联考(3月)数学试题


2、昆明市第一中学2025届高三第八次联考(3月)化学试题


A.布洛芬属于氧化物 B.1个布洛芬分子中含有1个氧分子
C.布洛芬的相对分子质量是190 D.布洛芬中氧元素与氢元素的质量比为
7.“生命吸管”可以解决野外极限环境中的饮水问题。其中没有用到的净水方法是( )
A.过滤 B.吸附 C.消毒 D.蒸馏
8.下列物质实验现象描述错误的是( )
A.电解水时,负极收集的气体可被点燃,发出蓝色火焰
B.铁丝放入硫酸铜溶液中表面会析出白色固体,溶液由蓝色变为无色


D.等质量的Na2O2分别与足量H2O、CO2反应,转移的电子数相同
【答案】D
【解答】解:A.过氧化钠与水、二氧化碳都发生歧化反应生成氧气,反应中过氧化钠既是氧化剂又是还原剂,故A错误;
B.过氧化钠为淡黄色固体,故B错误;
C.过氧化钠与盐酸反应生成氯化钠和水、氧气,不是碱性氧化物,故C错误;
D.过氧化钠与水、二氧化碳都发生歧化反应生成氧气,都是消耗1mol过氧化钠转移1mol电子,所以等质量的Na2O2分别与足量H2O、CO2反应,转移的电子数相同,故D正确;
故选:D。


3、昆明市第一中学2025届高三第八次联考(3月)化学答案