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As all schoolchildren know, water freezes to solid, barren, cracked ice at 32 degrees Fahrenheit. So maybe it is more than a mere coincidence that 32 percent of U.S. public and private-school students in the class of 2011 are deemed proficient in mathematics, placing the United States 32nd among the 65 nations that participated in the latest international tests administered by the Organization for Economic Cooperation and Development (OECD).President Obama, to his credit, has highlighted the problem repeatedly. But too many state education officials have done their best to conceal the low performance of their students. Under the educational accountability rules set down by the federal law No Child Left Behind, each state may set its own proficiency standard, and most have set their standards well below the world-class level. As a result, most state proficiency reports grossly inflate the percentage of students who are proficient, if we account for the fact that our students need to compete not just with others from the same state but also with those across the globe.When not complicating the problem, apologists explain away the depressing results with misleading arguments. Some point to the country"s large immigrant and disadvantaged populations, which, to be sure, do pose difficult educational challenges. Proficiency rates among African-Americans and Hispanics are very low. But if one compares only the white students in the U.S. with all students in other countries, the U.S. still falls short.Some also take false comfort in the belief that it takes only a limited number of high-flying students to fill the jobs at Google, Facebook, IBM, and all the other businesses and professions that need highly skilled talent. Still others say the low math scores are offset by a better record in reading. Admittedly the proficiency rate in only 10 countries is significantly higher than in the U.S. Nonetheless, the set of skills most needed for sustained growth in economic productivity—and the skills in shortest supply today—are those rooted in math competencies.It is easy for political leaders to shortsightedly put off considerations of effective school reform. The economic benefits from reform would not be felt immediately, as it takes time for an educated generation to become a productive workforce. But just as the continuing debt crisis, if not fixed, will escalate out of control only over the longer term, so the best available solution to that crisis—a fully unfrozen, high-functioning, constantly improving educational system—could raise the level of human capital to the point where resources would be available to address much of this future debt crisis. In the simplest terms, the impending fiscal crises with Social Security and Medicare are most effectively dealt with by enhanced growth of the economy, growth that will not be achieved without a highly skilled workforce. The freezing point of water is mentioned to demonstrate ______
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简述黑盒测试的具体技术方法。
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If there is one word I"m rapidly growing tired of, it"s passion. Not the sex and love type, but the workplace kind. Irately, it seems, I keep hearing career counselors advising the unemployed to identify and develop their passion. Then they need to turn that passion into paid work and presto! They"re now in a career they love.I know I"m being somewhat flippant, but I do wonder if passion is being oversold. Are we falling into a trap of believing that our work, and indeed, our lives, should always be fascinating and all-consuming Are we somehow lacking if we"re bored at times or buried under routine tasks or failing to challenge ourselves at every turnIn these economic times, fewer of us are worried about being fulfilled and more of us are concerned about simply being paid. But as switching jobs and careers becomes increasingly common, as whole professions are disappearing, we"re more frequently forced to ask ourselves what we want to do with the rest of our lives. That"s where passion comes in.Professor Wart, who co-wrote the book "The Joy of Work Jobs, Happiness and You", mentioned three factors for the workplace: supportive supervision, job security and the possibility of promotion, and fair treatment. He acknowledges that it is not easy to attain these goals, especially now. But it can still make a difference in your job satisfaction, he says, to examine what your strengths and needs are, and try, as much as possible, to match your work with those attributes. It doesn"t always mean getting a new job or career, but perhaps changing some things in your current employment. It would probably be better, Professor Warr suggested, to think less in terms of passion, and the inflated sense of drama that can go with that, and more in terms of job satisfaction or finding meaning in your work.The drive for passion or excitement, or whatever you call it, is deep in our genes. We feel good when the neurotransmitter dopamine is activated, and that"s what happens when we accomplish a given goal, said Gary Marcus, a professor of psychology at New York University. In fact, playing video games may not seem to be much of a passion, but if you"ve ever watched teenage boys going at it, their intensity and obliviousness to the outside world is the embodiment of flow. And that"s no accident.So maybe searching for a passion is not so bad. But it is also important to remember that there is no one way to find it, and someone else"s passion may be your idea of drudgery. And sometimes life—and work—is simply going to be putting one foot in front of the other. Or as Professor Warr said, "On the way to happiness, there must be unhappiness." Why is the author tired of "passion"
Over the past few days, the U.S. has been in the world"s crosshairs. Political argument in Washington produced a debt agreement widely criticized as insufficient and incomplete. Standard & Poor"s downgraded America"s credit rating, raising concerns about the health of the world"s most important economy. Slow growth in the U.S. is threatening the entire global recovery. Stock-market turmoil on Wall Street has turned markets from London to Seoul into roller coasters.Yes, the U.S. has been a source of much uncertainty in recent days. But in my opinion, the real danger for the global economy lies elsewhere: in Europe. If we"re going to have another financial crisis, chances are it will start in the euro zone, not Washington.On a macro level, you could say the U.S. is worse off economically than Europe right now. Economists were frantically reducing their 2011 growth forecasts for the U.S. as its GDP limped along in the first half of the year. In Europe, growth is holding up. The IMF raised its growth projection for the euro zone in late June to 2%. And as a recent HSBC report noted, the state of American national finances is actually more feeble than the euro zone"s taken as a whole.Even before the financial crisis, the U.S. fiscal path was unsustainable, an ageing population combined with extravagant social security commitments suggested either the need for massive tax increases or dramatic spending cuts. The crisis, however, made matters a lot worse. According to the OECD, the US federal, state and local government deficit (NOT the federal deficit alone) jumped from 2.9% of GDP in 2007 to 10.6% in 2010.Though that may be true, the U.S. has one huge advantage over Europe at this moment, the luxury of time. Ironically, the reaction of the world"s investor community to the recent financial turmoil has been to rush into U.S. debt—yes, the very bonds downgraded by S&P. What that means is U.S. borrowing costs will continue to decline, and that buys Washington time to get its act together and put in place a real plan to fill the deficit and restore American growth. The euro zone, on the other hand, has no such luck. Borrowing costs for the zone"s weakest economies—the PIIGS, including Greece, Ireland, Portugal, Spain and Italy—remain highly elevated. That puts pressure on those governments to implement reform programs with great haste as well as pressure on the rest of the euro zone to take more and more dramatic action to stem the contagion.The European Central Bank swooped in to buy billions of dollars of Italian and Spanish debt, which is a major deviation from the ECB"s usual policy. But it is unlikely that the ECB can handle the crisis on its own over an extended period of time. The United States has the "luxury of time", which refers to ______
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