树德中学高2025级高一上学期半期考试化学答案

树德中学高2025级高一上学期半期考试化学答案于2025-12-09发布，目前已经汇总了树德中学高2025级高一上学期半期考试化学答案的各科答案和试卷，更多试卷答案请关注本网站。

本文从以下几个角度介绍。

1、树德中学高2024级高一上学期12月阶段性测试数学试题no_ai_sugtypesugsas_2q树德中学高2024级第一期12月阶段性测试语文试题no_ai_sugtypesugsas_3q树德中学高2017级二诊模拟考试数学no_ai_sugtypesugsas_4q树德中学高2018级高三上学期10月阶段性测试理综试题no_ai_sugtypesugsas_5q树德中学高2018级高考适应性考试no_ai_sugtypesugsas_6q树德中学高一10月月考no_ai_sugtypesugsas_7q树德中学高三第二次诊断2024no_ai_sugtypesugsas_8q树德中学2024高考no_ai_sugtypesugsas_9q2024树德中学高考喜报no_ai_sugtypesugsas_10q树德中学二诊模拟2024no_ai_sug":false}

树德中学高2025级高一上学期半期考试政治试题

树德中学高2025级高一上学期半期考试化学试题

A. Knowledge is power. B. Still waters run deep.
C. Parenting is learning. D. Actions speak louder.
C
Many people think that because freezing (冰冻) and then unfreezing food will break down vitamins (维生素), frozen vegetables and fruits must be less nutritious than fresh ones.
When fruits and vegetables are picked from plants, they still do things like “breathing”, and over time, their vitamins start to break down. That’s just how nature works. Before fruits and vegetables get to supermarkets or local markets, they have to be carried, stored, and then finally brought to people’s homes. This whole trip often takes a long time, and during this period, their vitamins slowly disappear.
But for frozen fruits and vegetables, right after they’re picked, they will be quickly frozen at -18°C. At this temperature, the “breathing” almost stops, and tiny living things can’t grow. Freezing helps keep vitamins in fruits and vegetables safe — it doesn’t hurt them, and it might even help.
Experts from the U.S. Department of Agriculture looked at common things in fruits and vegetables, such as vitamin C, B vitamins, polyphenols, and carotenoids. They checked products sold in markets and found that while frozen and fresh vegetables might have small differences in some things, overall, they’re not that different. In fact, sometimes frozen fruits and vegetables keep more of these vitamins than fresh ones do. Scientists from Sheffield Hallam University in the UK studied 37 kinds of food and found that both frozen green beans and fresh green beans have high levels of beta carotene after being cooked.

6、树德中学高2025级高一上学期半期 物理答案

1、树德中学高2025级高一上学期半期考试化学答案

4、树德中学高2025级高一上学期半期考试地理答案

6、树德中学高2025级高一上学期半期考试数学试题

6、树德中学高2025级高一上学期半期考试物理答案

B. 由牛顿第二定律有可知上滑加速度大小为，则小球上滑所用的时间，重力G的冲量大小为，B不符合题意；
C. 小球做匀加速直线运动，速度，故洛伦兹力大小，可知洛伦兹力随时间线性变化，故洛伦兹力的冲量为，C符合题意；
D. 若小球，则0时刻小球所受洛伦兹力大小为，小球垂直杆方向所受合力为零，可得，弹力为，则小球在整个减速过程FN图像与t轴围成面积为零，冲量为零，D符合题意。
故答案为：CD
【分析】根据牛顿第二定律可得出小球做匀变速直线运动的加速度大小；利用洛伦兹力的表达式，结合小球速度随时间变化的关系式可得到洛伦兹力的大小，根据冲量的表达式可得出小球所受力的冲量。
三、非选择题
30．（2025高二下·深圳月考）如图所示，电源电动势E＝2.4 V，内阻r＝0.4 Ω，电阻R2＝0.2 Ω，CD、EF为竖直平面内两条平行导轨，处在与导轨平面垂直的水平匀强磁场中，其电阻忽略不计，ab为金属棒，质量m＝5 g，在导轨间的长度l＝25 cm，电阻R1＝0.2 Ω，ab可在光滑导轨上自由滑动且与导轨接触良好，滑动时保持水平，g取10 m/s2，求：

树德中学高2025级高一上学期半期考试生物答案