How are these parts of our body held together? They are held together by______. What is the color of bone marrow?

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

What is the color of bone marrow?

选项

答案brownish-red

解析从第二段第三句"…a soft brownish-red part…"可知，"棕红色"是骨髓的颜色。

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大学英语三级A级

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