单选题If you need a transfusion, the best and safest blood for you is ______.

单选题A cinema is a place of______. A．display B．entertainment C．audience D．activity

单选题His strange behavior confirmed his neighbors in their______ that he was guilty. A. suspicion B. doubt C. estimate D. imagination

单选题Tom ______ better than to ask Dick for help.

单选题______ metal ran out of the furnace.

单选题 Questions2-5 are based on the conversation yon have just heard.

单选题I have not decided which seat

单选题______you choose to contact us, you can expect our efficient and helpful service.

单选题For over three decades Intel has been providing Semi-conductor chips for computer hardware makers around the world. Intel's chips have been 28 many computers for years—both Macs and PCs. But, since tablet computers hit the market—the trend has shifted towards the small, mobile devices while sales of desktop computers 29 . Earlier this year, Intel introduced a new genre of laptops called 'ultra-book convertible laptops'. Intel Marketing Associate Mike Fard explains, 'This year it's all about touch, we have touch computers based on Windows 8 running the Intel 30 , but even more exciting than just touch, is the ultra-book convertible. What that means is that you have a standard laptop that converts into a tablet and we have multiple designs that 31 this capability of going from a tablet to a laptop. This is one from Lenovo; we also have one from Dell.' Intel has 32 a technology called 'Ivy Bridge' on its new line of chips 33 reduces power consumption 34 . This newest generation of laptops is sure to be a 35 with consumers, with lower prices than before. Earlier thin laptops were in the $1 000 price range. The ultra-book convertible 36 , is expected to sell for around $600—making it more 37 against regular tablet PCs. A. drop F. running K. however B. managed G. processors L. decreasing C. adopted H. hit M. feature D. core I. dramatically N. applied E. competitive J. competent O. which

单选题 The discovery of gold in Australia led thousands to believe that a fortune ______.

单选题2.选出下列选项中读音不同的选项（ ）

单选题 Questions2-5 are based on the conversation you have just heard.

单选题To learn Chinese cooking, you should practice ______.

单选题Ploughs and other agricultural {{U}}implements{{/U}} were on display at the recent exhibition.

单选题A year has ______ and there is no sign of the situation getting any better.

单选题Can you tell me the ______ for applying for citizenship in this country?

单选题Modern manufacturing has ______ a global river of materials into a stunning array of new products.

单选题 Into the Unknown The world has never seen population ageing before. Can it cope? A. Until the early 1990s nobody much thought about whole populations getting older. The UN had the foresight to convene a 'world assembly on ageing' back in 1982, but that came and went. By 1994 the World Bank had noticed that something big was happening. In a report entitled 'Averting the Old Age Crisis', it argued that pension arrangements in most countries were unsustainable. B. For the next ten years a succession of books, mainly by Americans, sounded the alarm. They had titles like Young vs Old, Gray Dawn and The Coming Generational Storm, and their message was blunt: health-care systems were heading for the rocks, pensioners were taking young people to the cleaners, and soon there would be intergenerational warfare. C. Since then the debate has become less emotional, not least because a lot more is known about the subject. Books, conferences and research papers have multiplied. International organisations such as the OECD and the EU issue regular reports. Population ageing is on every agenda, from G8 economic conferences to NATO summits. The World Economic Forum plans to consider the future of pensions and health care at its prestigious Davos conference early next year. The media, including this newspaper, are giving the subject extensive coverage. D. Whether all that attention has translated into sufficient action is another question. Governments in rich countries now accept that their pension and health-care promises will soon become unaffordable, and many of them have embarked on reforms, but so far only timidly. That is not surprising: politicians with an eye on the next election will hardly rush to introduce unpopular measures that may not bear fruit for years, perhaps decades. E. The outline of the changes needed is clear. To avoid fiscal (财政) meltdown, public pensions and health-care provision will have to be reined back severely and taxes may have to go up. By far the most effective method to restrain pension spending is to give people the opportunity to work longer, because it increases tax revenues and reduces spending on pensions at the same time. It may even keep them alive longer. John Rother, the AARP's head of policy and strategy, points to studies showing that other things being equal, people who remain at work have lower death rates than their retired peers. F. Younger people today mostly accept that they will have to work for longer and that their pensions will be less generous. Employers still need to be persuaded that older workers are worth holding on to. That may be because they have had plenty of younger ones to choose from, partly thanks to the post-war baby-boom and partly because over the past few decades many more women have entered the labour force, increasing employers' choice. But the reservoir of women able and willing to take up paid work is running low, and the baby-boomers are going grey. G. In many countries immigrants have been filling such gaps in the labour force as have already emerged (and remember that the real shortage is still around ten years off). Immigration in the developed world is the highest it has ever been, and it is making a useful difference. In still-fertile America it currently accounts for about 40% of total population growth, and in fast-ageing Western Europe for about 90%. H. On the face of it, it seems the perfect solution. Many developing countries have lots of young people in need of jobs; many rich countries need helping hands that will boost tax revenues and keep up economic growth. But over the next few decades labour forces in rich countries are set to shrink so much that inflows of immigrants would have to increase enormously to compensate: to at least twice their current size in western Europe's most youthful countries, and three times in the older ones. Japan would need a large multiple of the few immigrants it has at present. Public opinion polls show that people in most rich countries already think that immigration is too high. Further big in-creases would be politically unfeasible. I. To tackle the problem of ageing populations at its root, 'old' countries would have to rejuvenate (使年轻) themselves by having more of their own children. A number of them have tried, some more successfully than others. But it is not a simple matter of offering financial incentives or providing more child care. Modern urban life in rich countries is not well adapted to large families. Women find it hard to combine family and career. They often compromise by having just one child. J. And if fertility in ageing countries does not pick up? It will not be the end of the world, at least not for quite a while yet, but the world will slowly become a different place. Older societies may be less innovative and more strongly disinclined to take risks than younger ones. By 2025 at the latest, about half the voters in America and most of those in western European countries will be over 50—and older people turn out to vote in much greater number than younger ones. Academic studies have found no evidence so far that older voters have used their power at the ballot box to push for policies that specifically benefit them, though if in future there are many more of them they might start doing so. K. Nor is there any sign of the intergenerational warfare predicted in the 1990s. After all, older people themselves mostly have families. In a recent study of parents and grown-up children in 11 European countries, Karsten Hank of Mannheim University found that 85% of them lived within 25kin of each other and the majority of them were in touch at least once a week. L. Even so, the shift in the centre of gravity to older age groups is bound to have a profound effect on societies, not just economically and politically but in all sorts of other ways too. Richard Jackson and Neil Howe of America's CSIS, in a thoughtful book called The Graying of the Great Powers, argue that, among other things, the ageing of the developed countries will have a number of serious security implications. M. For example, the shortage of young adults is likely to make countries more reluctant to commit the few they have to military service. In the decades to 2050, America will find itself playing an ever-increasing role in the developed world's defence effort. Because America's population will still be growing when that of most other developed countries is shrinking, America will be the only developed country that still matters geopolitically (地缘政治上). Ask me in 2020 N. There is little that can be done to stop population ageing, so the world will have to live with it. But some of the consequences can be alleviated. Many experts now believe that given the right policies, the effects, though grave, need not be catastrophic. Most countries have recognised the need to do something and are beginning to act. O. But even then there is no guarantee that their efforts will work. What is happening now is historically unprecedented. Ronald Lee, director of the Centre on the Economics and Demography of Ageing at the University of California, Berkeley, puts it briefly and clearly: 'We don't really know what population ageing will be like, because nobody has done it yet.'

单选题 A mere 5% of the chief executives of the world's biggest companies are women. And they are more likely to be sacked than their more numerous male colleagues: 38% of the female CEOs who left their jobs over the past ten years were forced to go, compared with 27% of the men. This is the latest finding from the research on the top management at the world's 2,500 largest public companies that the consulting firm Strategy has been conducting since 2000. A clue as to why women are more likely to be fired than men is provided by another statistic in the study: 35% of female CEOs are hired from outside the company, compared with just 22% of male ones. Since generating lower returns to shareholders, outsiders generally have a higher chance of being kicked out. Businesses that are already troubled are more likely to turn to outsiders; and contrary to the insiders, outsiders are less likely to have a support network of friends who can rally around when times get tough. Michelle Ryan, an organisational psychologist at the University of Exeter in England, says women face nothing less than a 'glass cliff': they get their best shot at the top job by taking the helm of a firm in trouble. In practice, outsiders of either sex face the same precipice (绝壁). But since women are still fairly exotic creatures in the management, they attract disproportionate publicity when they hit problems. Carly Fiorina, dropped as HP's boss in 2005, made things worse by inviting such publicity. But the same is not true of, say, Ginni Rometty, the lower-profile boss of IBM (promoted from within the company in 2012), who is under fire over the firm's performance. The new research is not entirely pessimistic. Over the past ten years the balance of incoming versus outgoing female CEOs, as a proportion of all changes of boss, has risen significantly. Strategy predicts that women will make up as many as a third of incoming CEOs by 2040. It appears that the demand for female bosses exceeds supply—hence firms' willingness to bring them in from outside. This points to an obvious solution: companies should work harder on creating an internal pipeline of female future CEOs. This would reduce both the pressure to raid rival firms and the chances of women failing when they at last reach the top.