血液循环系统
The Circulatory System
识别并说出人体循环系统的主要组成部分，描述心脏、血管和血液的功能
Identify and name the main parts of the human circulatory system and describe the functions of the heart, blood vessels, and blood
学习证据 / Evidence
- 说出主要组成部分：心脏、动脉、静脉、毛细血管和血液
- 将心脏描述为一个泵，它推动血液在体内持续循环
- 解释血液将氧气和营养物质输送到细胞，并清除二氧化碳等废物
- Name the main components: heart, arteries, veins, capillaries, blood
- Describe the heart as a pump that pushes blood around the body in a continuous loop
- Explain that blood carries oxygen and nutrients to cells and removes waste products like carbon dioxide
评估问题 / Assessment
{{name}}能解释心脏的作用、为什么全身都要有血管，以及血液究竟携带什么吗？
Can {{name}} explain what the heart does, why we have blood vessels throughout the body, and what blood actually carries?