Question 1
人体内负责运输氧气和二氧化碳的主要细胞是哪一种?
- A红细胞
- B白细胞
- C血小板
- D血浆
Answer: A. 红细胞
红细胞含有血红蛋白,能与氧气结合并进行气体交换,是人体运输气体的主要载体。
UEC Junior 2 · 科学 (Science)
初二科学 (Science) · 人体系统 (Human Body Systems)
人体系统 (Human Body Systems) is part of the UEC Junior 2 Science syllabus. Practice the MCQs here to sharpen your exam technique — each question comes with a worked explanation.
Free sample questions
Question 1
Answer: A. 红细胞
Question 2
Answer: C. 肺泡
Question 3
Answer: C. 左心室
Question 4
Answer: B. 膈肌收缩,位置下降
Question 5
Answer: B. 胃
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