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簡述Web的工作原理

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www(world wide web 萬維網)由遍布在互聯網中的 web 服務器和安裝了 web 瀏覽器 的計算機組成,它是一種基于超文本方式工作的信息系統。作為一個能夠處理文字,圖 像,聲音,視頻等多媒體信息的綜合系統,它提供了豐富的信息資源,這些信息資源以

web 頁面的形式分別存放在各個 web 服務器上,用戶可以通過瀏覽器選擇并瀏覽所需的 信息 . 客戶機向服務器發送請求,要求服務器執行某項任務,服務器執行該項任務,并向客戶 機返回響應

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Part I Reading Comprehension Directions: In this part there are four passages. Each passage is followed by four comprehension questions. Read the passage and answer the questions. Then mark your answer on the Answer Sheet. Passage 1 Questions 1 to 5 are based on the following passage: Ask three people to look the same window at a busy street corner and tell you what they see. Chances are you will receive three different answers. Each person sees the same scene, but each perceives something different about it. Perceiving goes on in our minds. Of the three people who look out the window, one may say that he sees a policeman giving a motorist a ticket. Another may say that he sees a rush-hour traffic jam at the intersection. The third may tell you that he sees a woman trying to cross the street with four children in tow. For perception is the mind’s interpretation of what the senses—in this case our eyes—tell us. Many psychologists today are working to try to determine just how a person experiences or perceives the world around him. Using a scientific approach, these psychologists set up experiments in which they can control all of the factors. By measuring and charting the results of many experiments, they are trying to find out what makes different people perceive totally different things about the same scene. 1. Seeing and perceiving are . A. the same action B. two separate actions C. two actions carried on entirely by eyes D. several actions that take place at different times 2. Perceiving is an action that takes place . A. in our eyes B. only when we think very hard about something C. only under the direction of a psychologist D. in every person’s mind 3. People perceive different things about the same scene because . A. they see different things B. some have better eyesight C. they cannot agree about things D. none of these 4. Which of the following is implied but not stated in the passage? A. Psychologists do not yet know people see. B. The experiments in which all factors are controlled are better. C. The study of perception is going on now. D. Perception does not involve psychological factors. 5. The best title for this selection is . A. How We See B. Learning about Our Minds through Science C. What Psychologists Perceive D. How to Because an Experimental Psychologist
試題分類: 大學英語六級
練習次數:2次
試題分類: 資料員
練習次數:0次
The majority of successful senior managers do not closely follow the classical rational model of first clarifying goals, assessing the problem, formulating options, estimating likelihoods of success, making a decision, and only then taking action to implement the decision. Rather, in their day-by-day tactical maneuvers, these senior executives rely on what is vaguely termed intuition to manage a network of interrelated problems that require them to deal with ambiguity, inconsistency, novelty, and surprise ; and to integrate action into the process of thinking. Generations of writers on management have recognized that some practicing managers rely heavily on intuition. In general, however, such writers display a poor grasp of what intuition is. Some see it as the opposite of rationality; others view it as an excuse for capriciousness. Isenberg's recent research on the cognitive processes of senior managers reveals that managers' intuition is neither of these. Rather, senior managers use intuition in at least five distinct ways. First, they intuitively sense when a problem exists. Second, managers rely on intuition to perform well-learned behavior patterns rapidly. This intuition is not arbitrary or irrational, but is based on years of painstaking practice and hands-on experience that build skills. A third function of intuition is to synthesize isolated bitsm of data and practice into an integrated picture, often in an Aha! experience. Fourth, some managers use intuition as a check on the results of more rational analysis. Most senior executives are familiar with the formal decision analysis models and tools, and those who use such systematic methods for reaching decisions are occasionally leery of solutions suggested by these methods which run counter to their sense of the correct course of action. Finally, managers can use intuition to bypass in-depth analysis and move rapidly to engender a plausible solution. Used in this way, intuition is an almost instantaneous cognitive process in which a manager recognizes familiar patterns.One of the implications of the intuitive style of executive management is that thinking is inseparable from acting. Since managers often know what is right before they can analyze and explain it, they frequently act first and explain later.Analysis is inextricably tiedto actionin thinking/actingcycles,in which managers develop thoughtsabout theircompanies and organizations not by analyzing aproblematic situation and then acting, butby acting and analyzing in close concert.Given the great uncertainty of many of the management issues that they face, seniormanagers often instigatea course of action simply to learn more about an issue. They thenuse the results of the action to develop a more complete understanding of the issue. Oneimplicationof thinking/actingcycles is that action is often part of definingthe problem,not just of implementing the solution. 1. According to the text, senior managers use intuition in all of the following ways EXCEPT to [A] Speed up of the creation of a solution to a problem. [B] Identify a problem. [C] Bring together disparate facts. [D] Stipulate clear goals. 2. The text suggests which of the following about the writers on management mentionedin line 1, paragraph 2 [A] They have criticized managers for not following the classical rational model ofdecision analysis. [B] They have not based their analyses on a sufficientlylarge sample of actual managers. [C] They have relied in drawing their conclusions on what managers say rather than onwhat managers do. [D] They have misunderstood how managers use intuition in making business decisions. 3. It can be inferred from the text that which of the following would most probablybe one major differencein behavior between Manager X, who uses intuitionto reach decisions,and Manager Y, who uses only formal decision analysis [A] Manager X analyzes first and then acts; Manager Y does not. [B] Manager X checks possiblesolutions toa problem by systematicanalysis ; ManagerY does not. [C] Manager X takes action in order to arrive at the solution to a problem; ManagerY does not. [D] Manager Y draws on years of hands-on experience in creatinga solutionto a problem ;Manager X does not. 4. The text provides support for which of the following statements [A] Managers who rely on intuition are more successful than those who rely on formaldecision analysis. [B] Managers cannot justify their intuitive decisions. [C] Managers'' intuition works contrary to their rational and analytical skills. [D] Intuitionenables managers to employ theirpracticalexperience more efficiently. 5. Which of the following best describes the organization of the first paragraph of the text [A] An assertion is made and a specific supporting example is given. [B] A conventional model is dismissed and an alternative introduced. [C] The results of recent research are introduced and summarized. [D] Two opposing points of view are presented and evaluated.
試題分類: 專業英語八級
練習次數:23次
Passage 3 Questions 11 to 15 are based on the following passage: The idea of a special day to honor mothers was first put forward in America in 1907. two years later a woman, Mrs. John Bruce Dodd, in the state of Washington proposed a similar day to honor the head of the family—the father. Her mother died when she was very young, and her father brought her up. She loved her father very much. In response to Mrs. Dodd’s idea that same year—1909, the state governor of Washington proclaimed (宣布) the third Sunday in June Father’s Day. The idea was officially approved by President Woodrow Wilson in 1916. in 1924, President Calvin Coolidge recommended national observance of the occasion “to establish more intimate (親密) relations between fathers and their children, and to impress upon fathers the full measure of their obligations.” The red or white rose is recognized as the official Father’s Day flower. Father’s Day took longer to establish on a national scale than Mother’s Day, but as the idea grained popularity, tradesmen and manufacturers began to see the commercial possibilities. They encouraged sons and daughters to honor their fathers with small thank-you presents, such as a tie or pair of socks, as well as by sending greeting cards. During the Second World War, American servicemen stationed in Britain began to request Father’s Day greeting cards to send home. This generated a response with British card publishers. Though at first the British public was slow to accept this rather artificial day, it’s now well celebrated in Britain on the third Sunday in June in much the same way as in America. Father’s Day seems to be much less important as occasion than the Mother’s Day. Not many of the children offer their fathers some presents. But the American fathers still think they are much better fated than the fathers of many other countries, who have not even a day for their sake in name only. 11. When did Father’s Day officially begin to have national popularity? A. 1907 B. 1909 C. 1916 D. 1924 12. Who first started the idea of holding the Father’s Day? A. Mrs. John Bruce Dodd B. Mrs. John Bruce’s Mother C. The government of Washington. D. Some businessmen. 13. What flower will be popular on Father’s Day? A. Lily B. Water Lily C. Red rose or white rose D. Sunflower. 14. Which statement is true, a according to this passage? A. It took even longer for Mother’s Day to gain national popularity. B. The businessmen helped to make Father’s Day popular. C. Father’s Day is only celebrated in America. D. Father’s Day is only a trick of the businessmen to make money. 15. What was the first reaction of the British publishing towards Father’s Day? A. They thought highly of it and accepted it at once. B. They just accepted it at once without any hesitation. C. They just thought it a joke. D. They thought it was too artificial and took a long time to accept.
試題分類: 大學英語六級
練習次數:176次
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