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一个事务成功完成后，它对数据库的改变必须是永久的。这一特性称为事务的甲 ______。
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阅读梁实秋《谈时间》中的一段文字，然后回答下面小题。 时光不断在流转，任谁也不能攀住它停留片刻。“逝者如斯夫，不舍昼夜！”我们每天撕一张日历，日历越来越薄，快要撕完的时候便不免矍然以惊，惊的是又临岁晚，假使我们把几十册日历装为合订本，那便象征我们的全部的生命，我们一页一页地往下扯，该是什么样的滋味呢！“冬天一到，春天还会远吗？”可是你一共能看见几次冬尽春来呢？ 这段文字主要用了何种论证方法？
颈椎压缩骨折或脱位较轻的病人行枕颌吊带牵引复位满意者，用头颈胸石膏外固定，固定时间约为
It’s easy to get the sense these days that you’ve stumbled into a party with some powerful drug that dramatically alters identity. The faces are familiar, but the words coming out of them aren’t. Something has happened to a lot of people you used to think you knew. They’ve changed into something like their own opposite. There’s Bill Gates, who these days is spending less time earning money than giving it away--and pulling other billionaires into the deep end of global philanthropy(慈善事业) with him. There’s historian Francis Fukuyama, leading a whole gang of disaffected fellow travelers away from neoconservatism. To flip-flopis human. It can still sometimes be a political liability, evidence of a flaky disposition or rank opportunism. But there are circumstances in which not to reverse course seems almost pathological(病态的). He’s a model of consistency, Stephen Colbert said last year of George W. Bush:" He believes the same thing Wednesday that he believed on Monday -- no matter what happened on Tuesday." Over the past three years, I found people who had pulled a big U-turn in their lives. Often the insight came in a forehead-smiting moment in the middle of the night: I’ve got it all wrong. It looked at first like a sprinkling of outliers beyond the curve of normal human experience. But when you stepped back, a pattern emerged. What these personal turns had in common was the apprehension that we’re all connected. Everything leans on something, is both dependent and depended on. "The difference between you and me," a visiting Chinese student told University of Michigan psychologist Richard Nisbett not long ago," is that I think the world is a circle, and you think it’s a line." The remark prompted the professor to write a book, The Geography of Thought, about the differences between the Western and the Asian mind. To Western thinking, the world is linear; you can chop it up and analyze it, and we can all work on our little part of the project independently until it’s solved. The classically Eastern mind, according to Nisbett, sees things differently: the world isn’t a length of rope but a vast, closed chain, incomprehensibly complex and ever changing. When you look at life from this second perspective, some unlikely connections reveal themselves. I realized this was what almost all the U-turns had in common: people had swung around to face East. They had stopped thinking in a line and started thinking in a circle. Morality was looking less like a set of rules and more like a story, one in which they were part of an ensemble cast, no longer the star. According to the text, one difference between Western and Eastern minds was that ______.
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. 42
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