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试题答案

本文从以下几个角度介绍。

    [百师联盟]2026届高三一轮复习第一次调研考试物理(百c)试题

6、[百师联盟]2026届高三一轮复习第一次调研考试历史(百C)试题


4、[百师联盟]2026届高三一轮复习第一次调研考试历史(百C)试题


A. Take turns to speakB. Be careful about jokesC. Use everyday languageD. Speak slowly and clearly E. Give encouragement
34. ________
It is very important to express your ideas and purpose clearly. Make sure there are no mistakes by speaking clearly and not too fast.
35. ________
After each of your questions, wait for the other side to speak. In an everyday conversation, this can seem strange. But in cross cultural situations, this style makes the conversation much easier.
36. ________
It can be very difficult to speak English very well. If the people you are speaking with are having trouble finding the right words, you can support them. Tell them not to be shy in communication.


②Practice makes perfect. （习语）
17．范文：
Dear Mark,
I’m glad to hear from you. You asked me about how to learn Chinese well. Here are my suggestions.
First, you can listen to Chinese songs in your spare time. It’s also a good way to watch Chinese movies with friends on weekends. Second, you’d better learn to look up words in a dictionary. Third, when you have difficulty in learning Chinese, you can ask your teachers for help. Besides, you should read as much as possible. Last but not least, you should listen to the teachers carefully in class and practice more after class.
Hope you can learn Chinese well!
Yours,


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3、[百师联盟]2026届高三一轮复习第一次调研考试英语(百C)试题


2、[百师联盟]2026届高三一轮复习第一次调研考试数学(百C)试题


6、[百师联盟]2026届高三一轮复习第一次调研考试历史(百C)试题


6、[百师联盟]2026届高三一轮复习第一次调研考试化学(百C)试题


3、[百师联盟]2026届高三一轮复习第一次调研考试 (百C)试题


（2）Cl-
（3）BC
（4）B
【知识点】原子结构示意图与离子结构示意图；元素的概念；元素的符号及其意义；元素周期表的特点及其应用
【解析】【解答】（1）、元素周期表单元格中，最下方数字是相对原子质量，氟元素单元格最下方数字为19.00 ，所以氟的相对原子质量是19.00；
（2）、C粒子质子数为17（是氯元素），核外电子数为18，质子数小于核外电子数，为氯离子，符号是Cl-；
（3）、同种元素质子数相同，B、C粒子质子数都是17 ，所以属于同种元素的是BC；


(3)从燃烧条件分析，“点火”为氢气燃烧提供的条件是 。
【答案】(1)化合
(2)2:1
(3)温度达到着火点
【详解】（1）从微观示意图可知，该反应是氢气和氧气反应生成水，该反应是由两种物质生成一种物质的反应，基本反应类型属于化合反应。故填：化合。
（2）氢气和氧气在点燃条件下反应生成水，该反应的化学方程式为：，化学计量数之比等于参加反应的分子个数比，所以参加反应的氢气和氧气分子个数比为2:1。故填：2:1。
（3）燃烧需要同时满足三个条件：可燃物、与氧气（或空气）接触、温度达到着火点，所以从燃烧条件分析，“点火”为氢气燃烧提供的条件是温度达到着火点。故填：温度达到着火点。


3、[百师联盟]2026届高三一轮复习第一次调研考试化学(百C)答案