学习是一种复杂的脑力劳功。腑力劳动与体力劳动一样,都要消耗人体的能最。脑力劳动主要是脑细胞的活动,在大脑皮质的高级部位,特别是第二信号系统的工作占重要地位,其疲劳状态不易他人看到。而体力劳动占优势时,劳动的主要负担在肌肉和骨骼上,其疲劳状态表现明显。所以常被误认为脑力劳动没有 Learning is a complex mental work. Like manual labor, manual labor consumes most of the body’s energy. Mental work is mainly the activity of brain cells, which occupy an important position in the advanced parts of the cerebral cortex, especially the second signaling system, whose fatigue state is not easily seen by others. When physical labor predominates, the main burden of labor is on the muscles and bones, and its fatigue state manifests itself clearly. So often mistaken for mental work without