Youth is the most beautiful time to a person. When they are young and beautiful, they can do whatever they want. Some people say that youth is the time deserves us to be wasted, because if we are not crazy for one time, then we will become old soon. I don’t agree with this opinion. During the most beautiful time, we should fight for our future. The things we do will mean so much for us. When we look back on the past days, we will be proud of ourselves. The time that we fight for our dreams deserves to be remembered all the time. This is what youth means to us.
青春是一个人最美好的时刻。他们是那样的年轻貌美，可以做任何想做的事情。有人说青春是值得我们去浪费的，因为如果我们不疯狂一次，我们很快就会老去。我不同意这个观点。在最美好的时光里，我们应该为我们的未来而奋斗。我们所做的事情对我们来说会是意义非凡的。当我们回首过去的日子，我们将会为自己感到骄傲。我们为梦想而奋斗的日子值得永记。这才是青春的意义。
Some recent developments in computer industry make scientists predict that the gap between human beings and the machine will be closed by 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 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. In contrast, the computer consumes 1,000,000 watts of electrical power and occupies hundreds of cubic feet of space. The computer memory is like a cell of pigeonholes, with no thinking capacity and no connections elsewhere.
In a word, the electronic brains can hopelessly succeed in comparison with the human brains.
