2. 职称英语
  3. How are these parts of our body held together?They are held together by______.

How are these parts of our body held together?They are held together by______.

游客2023-09-22  19
问题 How are these parts of our body held together?
They are held together by______.
[br] What is the function of bone marrow?
Its function is to______.
选项
答案 make the white and red cells of blood
解析 从第二段第五句"It makes the red and white cells of blood"可知，"制造血液需要的红血球和白血球"是骨髓的基本功能。
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