四级作文背诵

四级作文背诵内容摘要：

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 wellbeing. 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. The Brain and the Computer Some recent developments in the puter industry make scientists predict that the gap between human beings and machines will be closed about the year 20200. To understand the significance of this prediction let us pare the human brain with existing puters. 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 municate with thousands of other cells. However, the puter 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 puter 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 parison with the human brains. Choosing an Occupation Every one faces the problem of choosing an occupation after graduation from college or university, which plays a vital role in his life. An appropriate occupation makes a man work with zest(热情 ) and vigor, as well as contribute to his country. To make a wise choice, two important things should be taken into consideration. One is the interest, the other, the demands of people and society. Only if the two aspects are connected, can a man show his talent and ability to the best advantage. If the two conflict, the former should be under the latter, for the people39。 s interests are more important than the individual39。 网 In regard to my choice in the future, I am fond of learning foreign languages。 what is more, with the implementation of the OpenDoor Policy, exchange between home and abroad in economy and culture has been growing significantly, thus I39。 m determined to be a qualified interpreter. 来源：恒星 英语 学习 网 Openingdoor Policy is the Only Way to Make China StrongModern Chinese history leads us to the conclusion that socialism, not capitalism is best for China. But how a socialist China should look at capitalism and more importantly, make use of the better side of capitalism for its own advantage is of vital(至关 ) importance to the country. As far as our country39。 s economic construction is concerned, taking advantage of the part of capitalism that is useful to us means we need to develop foreign trade, introduce advanced technology and better management, and make use of foreign funds. It also means we can absorb some of the economic theories, and make use of those economic policies, methods and measures that ply with(遵循 ) the law of mass production and a modity economy. By opening our windows wider to the outside world, people can learn more about other peoples and learn to make sensible judgments. Absorbing the better part of the cultures of other people to enrich ourselves is the best way to safeguard our socialist culture. So taking advantage of capitalism and stepping up economic reforms is the only way to make China strong. Closing the county to international exchanges will only keep it weak. World Population Explosion The human race has experienced a consistent increase in population since the beginning of its history. Famine and disease have done little to offset(抵消 )this steady increase. Too many people are added annually to the population of the world. So both the causes of population increase and the results of having more people are worth careful ：恒星英语学习网 Culture evolution is the major factor responsible for population increase. Early in human development, people invented tools to hunt animals. Later they built shelters to protect themselves. Step by step, they made life easier. As a result, fewer died from natural forces, such as harsh climate and disease. In the past, when population grew, there was unexplored territory to inhabit. But now, almost all the habitabl。