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提问人:网友l******8 发布时间:2023年1月15日 20:28
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为进行有效的献血者教育.动员和招募,应充分利用以下哪些资源:()

A.工作人员 B.志愿者 C.教育材料 D.经费

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ZP-89型移频自动闭塞接收盘双机工作,1、3端子相连,()端子为中继信号输入端。
A . A、10
B . B、9
C . C、8
D . D、7
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Imagine a world in which there was suddenly no emotion—a world in which human beings could feel no l...Emotions are significant for man’s survival and adaptation because ______.
A. they provide the means by which people view the size or shape of objects
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C. they encourage people to perform dangerous achievements
D. they generate more love than hate among people
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对于一笔银行汇票业务,可以发起几次查询()
A.1 B.3 C.5 D.没有限制
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上消化道出血最常见的原因是()
A . 出血性胃炎
B . 门静脉高压症
C . 胃癌
D . 胆道感染出血
E . 胃十二指肠溃疡
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小张去黄山旅游,发现同样是王老吉饮料,在黄山底的小卖部卖5元,但是在黄山顶的小卖部是10元,这是()定价法。
A成本导向
B主动竞争
C理解价格定价法
D需求差异定价法
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Over the past 600 years, English has grown from a language of few speakers to become the dominant...Approximately when did English begin to be used beyond England()
A. In 1600.
B. Around 1350.
C. Before 1600.
D. After 1600.
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心脏左前斜位,摄影的角度是()
A、45°~55°
B、55°~65°
C、60°~70°
D、70°~80°
E、80°~85°
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1936年12月,苏联制定和颁布了新宪法,宣布苏联已经建成了社会主义,用宪法的形式规定了新产生的社会主义经济政治制度,标志着苏联社会主义模式的形成。关于社会主义的苏联模式,以下说法正确的有

A . 在发展战略上以重工业和军事工业为发展重点,实现高速发展,实现从农业国到工业国的转变。
B . 在经济体制上,形成了单一的生产资料公有制形式,实行集中统一的指令性计划管理、单一的按劳分配方式。C . 其政治特点是高度集中的党和国家领导体制,自上而下的干部任命制,低效的监督机制,地位特殊的国家安全机关。D . 集中过多,管得过死、否定市场的作用,严重束缚了企业和劳动者的积极性。E . 苏联模式是社会主义的唯一模式。
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以下哪一项不属于流水对?
A.白日依山尽,黄河入海流。
B.唯将终夜长开眼,报答平生未展眉。
C.不堪玄鬓影,来对白头吟。
D.请看石上藤萝月,已映洲前芦荻花。
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脚手片必须满铺三步(包括操作层),绑扎牢固,脚手片铺设交接处要()、(),无()
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为什么要对高血压进行危险分层和评估?
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Is Harvard Worth It?

 

Conventional wisdom says yes. But with the price of a degree fromAmerica’s most famous university and other elite private colleges now surpassing $ 125,000, many families – and a number of economists – aren’t so sure. Here’s a look at the evidence.

By Jeremy Kahn

    ForAmerica’s high school seniors, April is the cruelest month. That’s when colleges flood the postal system with the news of who has won a place in next fall’s freshman class For more than a few families, a difficult decision will follow: Is it worth paying some $ 125,000 to give their child an education at an elite private college? Or would her future be just as bright if she went to a less expensive school?

    These questions have no easy answers. Of course, that’s not the impression you get from the $ 500-million-a-year college-admissions industry, with its magazine rankings, test prep courses, and guidebooks. Certainly many neurotic boomer parents ---- and their stress-out, resume-building teenagers ---assume that it is always better to choose Harvard over Big State U. because of Harvard' s presumably superior educational environment, better alumni connections, and more lucrative on--campus recruiting opportunities.

    It’s true that big law firms, major teaching hospitals, and investment banks- heck, even the offices of FORTUNE -- are stuffed with Ivy Leaguers. It' s also true that if you want a career at what passes for the American establishment --- .Sullivan & Cromwell, McKinsey, Goldman Sachs --- a gilt-edged diploma is a distinct advantage. Then again, there’s plenty of anecdotal evidence that an elite education is hardly necessary. Steve Jobs dropped out of Reed. Jack Welch went to the University of Massachusetts, Warren Buffett to the University of Nebraska. The majority of top CEOs surveyed by FORTUNE in 1990 did not attend an elite college (though a disproportionate number did).

So what kind of return is there likely to be on that $ 125,000 investment? And how does it compare with the return on a less expensive but also less prestigious education? The academic evidence in murky. To start with the basics: College pays. On average, a person with an undergraduate degree now earns almost twice as much as someone with only a high school diploma, up from 1.5 times in 1975.

The economic literature on the payoff of graduating from an elite college, however, as opposed to any college, is far less conclusive. Several studies during the past decade found a connection between higher future earnings and attendance at a college with high SAT scores. (Most of the research concluded that for each 100-point increase in the average SAT score, a graduate could expect a 3% to 7% increase in lifetime earnings.

 But the studies compared schools, not people. You would expect graduates of selective schools – which attract successful students – to have successful careers. (It would be stunning if they didn’t.) What such studies do not measure is how an individual’s earnings are affected by the choice of college. If student X gets into, say, Amherst and Michigan State, and choose to go to Michigan State, will X be shut out of Amherst-style earning potential? Other studies have tried to answer this question by looking at students with similar SAT scores who attended different kinds of schools. Researchers found that those who went to the more prestigious schools reported higher earnings.

     But SAT scores are not everything. Admissions offices at elite schools include many other criteria in their decisions – grades, extracurricular activities, recommendations, essays, interviews. These factors may reveal abilities, like good communication skills, that are far more valuable in the workplace than a perfect 1600. Because economists have no data on these traits, they term them “unobserved”. But they are hardly unimportant. Until recently, no one had tried to control for unobserved characteristics in measuring the effect of an elite education on earnings.

Then Alan Krueger, an economist at Princeton, and Stacy Berg Dale, a researcher at the Andrew W. Mellon Foundation, designed just such a study. In a widely publicized report, released by the National Bureau of Economic Research last year, they found no economic advantage in attending a selective college. Their research looked at the 1976 freshman class at 30 schools, ranging in selectivity determined by average SAT scoresfrom Yale to Denison. The colleges were mostly private but included a few public universities: The University of Michigan, Ohio’s Miami University, Penn State, and the University of North Carolina at Chapel  Hill. Dale and Krueger compared the earnings of students who were admitted to the same colleges but made different choices. This ensured that they looked at similar individuals. In other words, because the students had been admitted to the same schools, they would have had equivalent SAT scores and “unobserved” traits.

Krueger and Dale concluded that smart, talented kids who attended less selective schools did just as well in their careers as their counterparts at elite colleges. There was no difference in average earnings. The same traits that made the students desirable candidates for admission to Yale – ambition, intelligence, wit – carried over to the work-place, where they were duly (and comparably) rewarded, even though they had turned down an elite education. Krueger says this is because the positive characteristics attributed to selective colleges were actually characteristics of the students, not of the schools. The advantages of Harvard, in other words, confer few benefits on the class slacker. Robert Zemsky, an education professor at the University of  Pennsylvania, who believes a prestigious undergraduate degree does pay off, puts in this way: “It’s like the brass ring on a merry-go-round. If you go to a high-priced, highly selective school, you have a better shot at the brass ring. But you have to grab it.

While Krueger and Dale found that college selectivity did not affect earnings, it did make a significant difference to those from poorer backgrounds. A 200-point increase in the average SAT score of the college attended resulted in 7% greater earnings for students from families in the lowest fifth of income distribution. Krueger attributes this to the ability to network with a critical mass of affluent students and alumni: “The kid from the inner city won’t have contacts at Goldman Sachs,” says Krueger. Children from wealthier backgrounds are more likely to have a grasp on the upper rungs of the labor market.

Krueger and Dale’s research while intriguing, is not definitive. Critics have questioned their methodology, the limited number and range of schools evaluated, and their conclusions. Even Krueger finds it odd that the results seem to show that while there is no correlation between college selectivity and future income (except for poorer students), the more a college costs, the higher the earnings of its graduates.

Caroline Hoxby, an economist at Harvard specializing in the economics of education, has done research that challenges the Krueger Dale findings. She placed hundred schools in eight ranks based on the SAT scores of their students. She looked at students who entered these colleges in 1960, 1972, and 1982, then examined their earnings at age 32. Hoxby controlled for SAT scores by comparing students with similar scores from different colleges; she did not control for unobserved characteristics as Krueger and Dale tried to. Although she notes that “some of the apparent returns to graduating from a more selective college may actually be attributable to the self-selection of students who have low earnings potential into less competitive colleges,” she doesn’t think this explains the whole difference in income between graduates of elite and less elite colleges.

 Using 1997-98 tuition figures, Hoxby concluded that a student who gave up a full scholarship at a Rank Three private college (average SATs: 90th percentile in verbal, 86th in math) to pay full price at a Rank One selective college (average SATs: 96th percentile in verb

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与EB病毒感染有关的是()
A . A.食管癌
B . B.Burkitt淋巴瘤
C . C.乳腺癌
D . D.子宫颈癌
E . E.肝细胞癌
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《中华人民共和国职业病防治法》是哪一年实施的?()
A.1997年B.2000年C.2002年D.2005年E.2008年
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