陕西省八年级20252026学年度第一学期开学收心检测卷语文D答案于2025-08-27发布，目前免费查试卷答案网站已经汇总了陕西省八年级20252026学年度第一学期开学收心检测卷语文D答案的各科答案和试卷，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、陕西省2024~2024学年度八年级期末检测卷(二)
    2、陕西省八年级期末卷(一)
    3、陕西省2019~2024学年度八年级期中检测卷
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    10、2024年陕西省初中学业水平考试全真模拟卷8语文

5、陕西省八年级2025-2026学年度第一学期开学收心检测卷数学D试题


4、陕西省八年级2025-2026学年度第一学期开学收心检测卷生物D试题


四、14AABB
6—E
五、25143
二、1-5 CCABC
作业三
三、1-5 BCBAC
一、14CBAD


Changing the balance is bad for nature. Sometimes when people move into a new place, they often cut down many plants. Some of these plants are good for animals. If the animals cannot find food to eat, they will die or have to leave the place.
Here is another example. In a place of the United States, the giraffes there ate a kind of rose; the lion there ate the giraffes. The number of the giraffes, lions and wild roses did not change much if people kept things as they were. But people killed many lions to protect the giraffes. Soon there were so many giraffes that they ate up all the roses. Then the giraffes began to eat leaves of young trees. These trees were important to people. So people thought of ways to protect trees. Now the giraffes had nothing to eat, and many of them died. This was another lesson from nature.
Please always keep this in mind: it's important for us to keep the balance of nature.
8．How does the writer start the passage
A．By giving a fact. B．By asking a question.
C．By giving an opinion. D．By telling a life story.
9．Which one shows the right relation (关系) of giraffes, lions, roses and trees


6、陕西省八年级2025-2026学年度第一学期开学收心检测卷生物学D答案


1、陕西省八年级2025-2026学年度第一学期开学收心检测卷英语D答案


6、陕西省八年级2025-2026学年度第一学期开学收心检测卷地理D答案


6、陕西省八年级2025-2026学年度第一学期开学收心检测卷 D答案


5、陕西省八年级2025-2026学年度第一学期开学收心检测卷生物D试题


6、陕西省八年级2025-2026学年度第一学期开学收心检测卷数学D答案


【知识点】化学键；共价键的形成及共价键的主要类型
【解析】【解答】A．氦为单原子分子，不含有共价键，故A错误；
B．氯气分子中含有Cl-Cl共价键，属于非极性共价键，故B错误；
C．氨分子中含有N-H共价键，属于极性键，故C正确；
D．氯化钠是由Na＋和Cl－构成的化合物，含有离子键，故D错误；
故答案为：C
【分析】极性键是指由不同种元素之间通过共用电子对形成的相互作用力，据此结合选项所给物质的结构进行分析。


催化剂
23.（1)增强导电性(1分)
(2)8:1(1分)
24.(1)乙(1分)
(2)a(1分)
(3)HS0,(1分)
25.(1)c(1分)


3、陕西省八年级2025-2026学年度第一学期开学收心检测卷化学D答案