智力发育完善的人,不论在社会科学或自然科学方面,都能作出高水乎的成就;反之,甚至不能胜任平凡的工作.脑是控制智力发育的器官,而脑的基础又是大脑皮层的细胞.脑和其它组织一样,需要各种营养素的供给,以组成、发育和维持细胞生命和活动.一个人的 People with well-developed mental abilities can make superlative accomplishments both in the social sciences and in the natural sciences; on the contrary, they can not even perform ordinary tasks. The brain is the organ that controls the development of intelligence and the brain is based on the cerebral cortex The brain, like other tissues, needs the supply of various nutrients to make up, develop, and sustain cell life and activity.