One thing that distinguishes the online world from the real one is that it is very easy to find things. To find a copy of The Economist in print, one has to go to a newsstand, which may or may not carry it. Finding it online, though, is a different proposition. Just go to Google, type it in" economist" and you will be instantly directed to economist.com. (46) Indeed, until Google, now the world’s most popular search engine, came on to the scene in September 1998, searching online was a hit-or-miss affair.Google was vastly better than anything that had come before: so much better, in fact, that it changed the way many people use the web. (47) Almost overnight, it made the web far more useful, particularly for non-specialist users, many of whom regard Google as the Internet’s front door. It’s now a worldwide phenomenon. Not only has it made the Internet into an extremely fast and valuable research tool, it’s become a common word and has even created a new verb" to google." (48)The recent fuss over Google’s stock market flotation obscures its far wider social significance: few technologies, after all, are so influential that their names have become a household verb such as the cloning technology creates the verb" to clone".Google began in 1998 as an academic research project by Sergey Brin and Lawrence Page, who were then graduate students at Stanford University in Palo Alto, California. It was not the first search engine, of course. (49) Existing search engines were able to scan a large portion of the web, build an index, and then find pages that matched particular words, but were less good at presenting those pages, which might number in the hundreds of thousands, in a useful way.Mr. Brin’s and Mr. Page’s accomplishment was to devise a way to sort the results by determining which pages were likely to be most relevant. They did so by using a mathematical program, called PageRank. (50) This program is at the heart of Google’s success, distinguishing it from all search engines and accounting for its apparently magical ability to find the most useful web pages. With this powerful ability. Google distinguished itself from among all the search engines and became an established standing research tool in the online world. Almost overnight, it made the web far more useful, particularly for non-specialist users, many of whom regard Google as the Internet’s front door
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It has often been remarked that the saddest thing about youth is that it is wasted on the young. Reading a recent newspaper report on a survey conducted among college freshmen, I recalled the regret,"If only I knew then what I know now."The survey disclosed what I had already suspected from informal polls of students. According to the survey, which was based on the responses of over 188,000 students, today’s traditional-age college freshmen are" more materialistic and less altruistic".41. ______. It follows then that today the most popular course is not literature or history but accounting. Interest in teaching, social service and the" altruistic" fields is at a low, along with ethnic and women’s studies. On the other hand, enrollment in business programs, engineering and computer science is way up.42. ______.Frankly, I’m proud of the young lady (not her attitude but her success). But why can’t we have it both ways Can’t we educate people for life as well as for a career I believe we can. If we’re not, then that is a fault of our educational system--elementary, secondary and higher. In a time of increasing specialization, a time when 90 percent of all the scientists who have ever lived are currently alive, more than ever we need to know what is truly important in life.43. ______.Most of us finally come to realize that quality of life is not entirely determined by how much we earn. Sure, everyone wants to be financially comfortable, but we also want to feel that we have a perspective on the world beyond the confines of our occupation; we want to be able to render service to our fellow man and to the world.44. ______.It is equally true that, in studying the diverse wisdom of others, we learn how to think. More important, perhaps, education teaches us to see the connections between things, as well as to see beyond our immediate needs.45. ______.In the long run that’s what education really ought to be about. And I think it can be. That’s the way it should be. Oscar Wilde had it right when he said that we ought to give our ability to our work but our genius to our lives. Let’s hope our educators answer the students cries for career education, but at the same time, let’s ensure that the students are prepared for the day when they realize their folly. There’s a lot more to life than a job.[A] Academic emphasis on competition, rationality and externals acknowledges only one kind of knowing. It makes students devalue their inner selves or larger social purposes.[B] Not surprising in these hard times, the student’s major objective" is to be financially well off." Less important than ever is developing a meaningful philosophy of life.[C] Education must meet the needs of the human spirit. It must assist students to develop a satisfactory personal philosophy and sense of values; to cultivate tastes for literature, music and the arts; to grow in ability to analyze problems and arrive at thoughtful conclusions.[D] That’s no surprise either. A friend of mine (a sales representative for a chemical company)was making twice the salary of her college instructors during her first year on the job. And that was four years ago; She must be earning much more now.[E] Most people, somewhere between the ages of 30 and 50, finally arrive at the inevitable conclusion that they could do more than serving a corporation, a government agency, or whatever.[F] But the most important argument for a broad education is that in studying the accumulated wisdom of the ages, we improve our moral sense.[G] While it’s true that we all need a career, preferably a profitable one, it is equally true that our civilization has accumulated an incredible amount of knowledge -- be it scientific or artistic. 43
糖尿病肾脏病变的主要表现()。
A. 心力衰竭,心律失常
B. 白内障,青光眼
C. 肾盂肾炎
D. 肾动脉硬化
E. 膀胱炎
SQL中的GRANT和REVOKE语句主要用来维护数据的 ______。
在下列两个实例中各有5个问题,请在各问题答案的选项中,选出一个或一个以上正确答案。 国内某有进出口经营权的服装加工公司与台湾某公司签订一份为期5年的来料加工纯棉服装的协议。在协议中订明由台湾某公司不作价提供工业缝纫机(属机电产品进口许可证管理、法定检验) 50台作为加工生产专用。在首期加工合同中订明由我方为台湾某公司来料加工5万打纯棉男式内衣,由外商提供纯棉面料,属加工贸易限制类商品。合同签订后,该服装加工厂到海关办理了备案手续。 请根据上述材料,回答下列问题: 该合同中的进口料件的保税期限是( )。
A. 一年,可以两次申请延长,每次延长的最长期限为一年
B. 一年,可以申请延长,延长的最长期限为半年
C. 半年,不可以延长
D. 一年,可以申请延长一年