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试题答案

本文从以下几个角度介绍。

    1、榆林市2024-2024学年度第一学期高二期末检测
    2、2024陕西省榆林市高三二模
    3、2024榆林市高三二模语文
    4、2024榆林市二模语文答案
    5、榆林市2024~2024年度高三第二次模拟考试
    6、2024陕西省榆林市二模成绩
    7、2024陕西榆林二模
    8、榆林市2024二模
    9、2024榆林市高考二模成绩
    10、2024榆林市高三二模成绩

4、陕西省高二榆林2024~2025度第二学期期中联考数学试题


6、陕西省高二榆林2024~2025度第二学期期中联考生物试题


Drawing a submarine
A teacher makes a classic book more fun for students to read
遇见《海底两万里》：北京中学生画笔下的“鹦鹉螺号”
Have you read the book Twenty Thousand Leagues Under the Sea (《海底两万里》) It tells ___1__ story of Captain Nemo (尼摩船长) and his team in a cool submarine (潜水艇)__2_____( call)the Nautilus (鹦鹉螺号).
This book is one of the must-reads for junior high students. ____3___(make) reading more fun, the Chinese teacher at Beijing Dongzhimen High School Yuqun Campus came up with an__4___( excite) idea. The seventh-graders were asked to draw the Nautilus from the story as part of __5____(they) homework.
Students said they loved this idea, __6___ it brought their imagination (想象力) into full play.
The book ____7____(say) much about what the Nautilus looked like, so students looked for clues (线索) while reading. “In the book, people believe the Nautilus is a super big fish,” said 13-year-old Hu Yuhan. “So it would be cool to draw it __8__ a whale!”


On the first day of school, Ava goes to school 33 Teddy in her schoolbag. Ava is a little nervous 34 she walks into the classroom. Then she thinks of Teddy. She takes it out and hugs it. That makes her 35 better. At break time, Ava sees a boy called Lucas play with a stuffed dog. She walks to Lucas and asks about the stuffed dog. Lucas says Bingo makes him feel 36 at school. After that, they often play together, and soon become good friends.
Ava and Lucas decide to start the Stuffed Animal Club at school. They take their stuffed 37 to school every day. Many other children join the 38 . There are about thirty members now. They meet on Mondays and Thursdays. In the club, they share stories and play different games together.
Because of the club, many other children like Ava and Lucas have new friends and feel safe at school. Ava and Lucas want to help more kids. They plan to 39 stuffed animals to the kids in hospital next week. The idea makes all the club members 40 . They’re happy to do meaningful things.
31．A．gives B．spends C．collects D．advises
32．A．cheaply B．normally C．quickly D．clearly
33．A．by B．without C．with D．for
34．A．before B．if C．until D．unless


3、陕西省高二榆林2024~2025度第二学期期中联考化学试题


4、陕西省高二榆林2024~2025度第二学期期中联考生物试题


3、陕西省高二榆林2024~2025度第二学期期中联考生物试题


5、陕西省高二榆林2024~2025度第二学期期中联考化学试题


4、陕西省高二榆林2024~2025度第二学期期中联考地理试题


3、陕西省高二榆林2024~2025度第二学期期中联考英语试题


②提高释放氢气的速率，提高释放出氢气的纯度
解析：（1）根据题意，，1个失去2个电子，1个得到2个电子，说明。根据原子守恒及电荷守恒配平离子方程式：；反应温度在40~80 ℃范围内，随着温度升高，催化剂活性增强，单位时间内催化加氢的转化率迅速上升。
（3）①观察题图所示反应机理，HCOOH电离出的结合形成,结合形成，然后脱去形成，与结合产生，故是HCOOH的2个H结合产生了，则HCOOD的产物除了还有HD。②HCOOK与HCOOH的不同之处在于前者完全电离，更易与催化剂结合脱去，相比而言，可提高释放氢气的速率；HCOOK溶液呈碱性，不易放出，故还可提高释放出氢气的纯度。
12．答案：（1）
（2）①；②；
（3）①BaO；②阶段净反应速率为正值且恒定不变，后反应达到平衡，净反应速率恒为0；反应物均为固体，固体的浓度为定值，不会随着消耗而发生改变
解析：（1）与电石类似，与水反应生成（乙炔）和，该反应的化学方程式为。


答：现有含的石英砂，计算理论上可以制得硅的质量为22.4kg。


3、陕西省高二榆林2024~2025度第二学期期中联考化学答案