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动物

4年级科学

3.1.2 根据呼吸器官将动物分类。
3.1.3 概括有些动物拥有超过一个呼吸器官。

动物

4年级科学

3.2.1 说出脊椎动物和无脊椎动物的定义。
3.2.2 举例脊椎动物和无脊椎动物。
3.2.3 根据哺乳类、爬行类、两栖类、鸟类和鱼类的专有特征来分类脊椎动物。

动物

4年级科学

3.1.1 确认动物的呼吸器官。
3.1.2 根据呼吸器官将动物分类。
3.1.3 概括有些动物拥有超过一个呼吸器官。

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