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1. The Brain and the Computer Some recent developments in the computer industry make scientists predict that the gap between human beings and machines will be closed about the year 20000. To understand the significance of this prediction let us compare the human brain with existing computers. The brain consumes electrical energy at the rate of 25 watts and occupies a volume of one tenth of a cubic foot. The brain houses between 10 billion and 100 billion items of information. Every brain cell is directly connected to many other cells. As a result, the cells in which information is stored can communicate with thousands of other cells. However, the computer consumes 1000,000 watts of electrical power and occupies hundreds of cubic feet of space. Its million items of immediately accessible information. In contrast, the computer memory is like a cell of pigeonholes, with no thinking capacity and no connections elsewhere. In a word, the electronic brains are hopelessly inadequate in comparison with the human brains. 2. Health and Life As the saying goes, you dont know what happiness is until you lose it you dont know what health is until you are ill. Health is of vital importance to life sounds like a cliche to everyone, but it is absolutely true. The negligence of the delicate balance of your body and soul, the harmful habits such as smoking, excessive drinking and burning mid-night oil will catch up with you someday. How many big plans are interrupted by bad health! Even a normal life is unimaginable without the guarantee of health. How to keep fit is an eternal topic of diversity and controversy. Regardless of all the different suggestions poured from all kinds of sources, one should do at least two things for him/herself. First, hold an active and optimistic attitude toward life and maintain a mental well-being. Second, live a regular life and keep a balanced diet. Anyway, a healthy life is within reach when you begin to adjust your mind and body. | 
