神经元的轴丘内不含以下什么结构?
A. 神经丝(神经原纤维);
B. 滑面内质网;
C. 徽管;
D. 尼氏体;
E. 线粒体;
神经元的形状多种多样,但都可分为____、____和____三部分。
按功能不同可将神经元分为____、____和____三种。
【单选题】What are we much less aware of?
A. How important work is for us.
B. How much work we have done.
C. The extent of work we do.
D. The happiness and contentment from work.
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