[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3生物试题于2025-12-14发布，目前免费查试卷答案网站已经汇总了[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3生物试题的各科答案和试卷，更多试卷答案请关注免费查试卷答案网站。

试题答案

本文从以下几个角度介绍。

    1、2024/2024学年度第二学期七年级期末质量检测生物试卷"
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    "q":"2024-2024学年度第二学期期末考试七年级生物"
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    {"type":"sug"
    "sa":"s_3"
    "q":"2024-2024学年度第一学期七年级生物"
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    "sa":"s_4"
    "q":"2024—2024七年级下学期生物试卷"
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    "sa":"s_5"
    "q":"2024-2024学年度第一学期期末质量检测七年级生物试题"
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    {"type":"sug"
    "sa":"s_6"
    "q":"20242024七年级生物试卷及答案"
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    {"type":"sug"
    "sa":"s_7"
    "q":"2024年七年级生物答案"
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    "q":"2024至2024第二学期下册七年级生物检测卷期中考试"
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    "sa":"s_9"
    "q":"2024至2024年七年级期末生物"
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    "q":"2024-2024七上生物期末试卷"
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5、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3地理试题


6、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3生物试题


闽教版 (2012) 五年级上册11月期中测试英语试卷
选出不同类的一项。
1. A. pupil B. player C. flower
2. A. Internet B. September C. July
3. A. beside B. behind C. holiday
4. A. kind B. picture C. afraid
5. A. boys B. chess C. teachers


Sports-loving students in Ronghe Primary School in Guangxi may find it difficult to choose from over 20 sports clubs in their school. They can join any sports club in the 90-minute after-school program. And there are teachers for every club. This is one of the school’s ways to help students to relax after class and to control myopia (控制近视).
Study shows more than half of the Chinese students have myopia and the number is growing. Children with myopia hardly ever do enough exercise. They don’t like doing sports. In order to improve the eye health of its students, the school has four P.E. classes every week and holds (举行) lots of sports activities, too.
In class, students’ eyes get tired easily because they have to look at the blackboard or books for a long time. Sports can help them to relax and they feel good in the fresh air. “The basketball club is one of the most popular sports clubs at school. Ball games are good for eyes by keeping the students watching the ball movement (运动),” said Xie Kun, one of the school’s P.E. teachers, “It is helpful in stopping myopia from happening.”
1．How many sports clubs are there in Ronghe Primary School
2．How long does the after-school program last
3．Who doesn’t like doing sports
4．Why do the students’ eyes get tired easily in class


5、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3政治试题


2、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3 试题


1、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3化学试题


3、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3英语试题


5、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3生物试题


5、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3生物试题


红磷燃烧一段时间后熄灭，说明剩余的氮气不支持燃烧。
（1）只有加入足量红磷，才能保证将集气瓶内的氧气充分消耗，使实验结果更准确。
（2）红磷在氧气中燃烧生成五氧化二磷，化学方程式为。
（3）红磷燃烧消耗氧气，待装置冷却后，打开止水夹，进入集气瓶中水的体积约占集气瓶容积的五分之一，说明氧气约占空气总体积的五分之一。
（4）A、集气瓶中的水用于吸收五氧化二磷、降温，烧杯中的水用于显示进入集气瓶中氧气的体积，作用不同，该选项错误；
B、铁丝在空气中不能燃烧，不能用铁丝替代红磷来测定空气中氧气含量，该选项错误；
C、装置气密性不好，冷却时外界空气进入，会导致进入集气瓶中水的体积偏小，测量结果偏小，该选项正确。


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3、[益卷]2025~2026学年度第一学期七年级课后综合作业(三)3化学答案