单选题These plastic flowers look so ______ that many people think they arc real.

单选题All animals must rest, but do they really sleep as we know it? The answer to this question seems obvious. If an animal regularly stops its activities and stays quiet and unmoving—if it looks as though it is sleeping—then why not simply assume that it is in fact sleeping? But how can observers be sure that an animal is sleeping? They can watch the animal and notice whether its eyes are open or closed, whether it is active or lying quietly, and whether it responds to light or sound. These factors are important clues, but they often are not enough. Horses and cows, for example, rarely close their eyes, and fish and snakes cannot close them. Yet this does not necessarily mean that they do not sleep. Have you ever seen a cat dozing with an eye partly open? Even humans have occasionally been observed to sleep with one or both eyes partially open. Animals do not necessarily lie down to sleep either. Elephants, for example, often sleep standing up, with their tusks resting in the fork of a tree. Finally, while "sleeping" animals often seem unaware of changes in the sounds and light and other stimuli around them, that does not really prove they are sleeping either. Observations of animal behavior alone cannot fully answer the question of whether or not animals sleep. The answers come from doing experiments in "sleep laboratories" using a machine called the electroencephalograph (EEC). The machine is connected to animals and measures their brain signals, breathing, heartbeat, and muscle activity. The measurements are different when the animals appear to be sleeping than when they appear to be awake. Using the EEC, scientists have confirmed that all birds and mammals studied in laboratories do sleep. There is some evidence that reptiles, such as snakes and turtles, do not truly sleep, although they do have periods of rest each day, in which they are quiet and unmoving. They also have discovered that some animals, like chimpanzees, cats, and moles (who live underground), are good sleepers while others, like sheep, goats, and donkeys, are poor sleepers. Interestingly, the good sleepers are nearly all hunters with resting places that are safe from their enemies. Nearly all the poor sleepers are animals hunted by other animals: they must always be watching for enemies, even when they are resting.

单选题By the end of this month, we surely ______ a satisfactory solution to the problem. A. have found B. will be finding C. will have found D. are finding

单选题The appeal for funds did not ______ much of a response.

单选题 Each year Universum, a Swedish consulting firm, asks American MBA students where they would most like to work. The 2007 survey showed a few surprises in its top 50 companies named: Hewlett-Packard and Cisco Systems had fell, while old reliable ones such as General Electronic, Coca-Cola and General Mills had jumped up the list. But the most desired industry remains consulting, despite the beating it has taken since the end of the dotcom boom (网络泡沫), and the top firm remains McKinsey. Perhaps the reason is: in recent years McKinsey has done as much as any company to provide MBA graduates with increasingly better and more profitable positions. The reason for this was the firm's popularization of a concept known as 'war for talent'. It advocated finding the best and brightest and rewarding their innovations in proportion to 'talent' instead of their performance or seniority. But what is talent? And how does a company measure its employees' talent, especially when assigning them to new projects? The 'war for talent' recommends a careful assessment of the inner skills and characteristics ready for success but gives few clues as to what those inner skills might be, which might make the war standardless. For a company focused on quick growth, one shortcut (捷径) could be young hires who had already been rewarded for their talent by receiving MBAs from well-respected schools. Thus as the idea of finding talented employees who could quickly learn the skills took off, so did the asking price of the star MBA graduates. Unfortunately, now the 'war for talent' seems less of a brilliant idea. The economic downturn, bringing with it less competition for the available talent, also did its part to control in indulgent (纵容的) employers. Similarly, Professor Jeffrey Pfeffer emphasized that cultivating a talent means not just hiring the most effective performers, but being able to deal quickly and firmly with the least effective C performers. But he adds that the C refers not to the person but to the individual's performance in a given job. Some low-performing managers were A or B performers earlier in their careers—and may attain that level of performance again. MBA programs will remain attractive recruiting areas, but the MBA model itself has come under increasing criticism. Prof Pfeffer, in a 2007 article found little evidence that an MBA had much effect on future salary or career. Future MBA students might need to provide more evidence of their talent to impress potential employers.

单选题Eating an apple a day doesn t keep the doctor away, but it does reduce the amount of trips you make to the drug store per year. That s according to a new study that investigates whether the

单选题 Well-to-do parents are increasingly choosing to send their children to single-sex preparatory schools, reversing the trend of recent years. Last week, Michael Gove told us that we needed to promote a Dangerous Book for Boys culture so that boys could be boys again. At the beginning of this month, it (re-)emerged that there were far fewer male teachers in primary schools to act as role models. Underlying this is anxiety about achievement; recent Department for Education figures show that nearly double the number of boys failed to reach expected standards at seven. The gender gap is more than 10 points in English at 11. Behaviour is a worry too. Boys are three and a half times more likely to be excluded, and the figure is worse still if you are a working-class or black boy. Today's answer to the problem seems to be single-sex schools. Yet debates about their value are both age-old and decidedly unresolved. Proponents (倡导者) argue that keeping boys together allows them to expel their 'boyish' energy more freely—ensuring they are in line and on task. Girls are said to benefit too, with more support to build self-confidence. But there is also evidence in the other direction. A report commissioned by the Headmasters and Headmistresses conference, which represents top private schools, shows that single-sex schools make little difference to outcomes. What's more, arguing that Eton is a good school because it only admits boys is like saying Wayne Rooney is a good footballer because he wears a nice kit—one does not necessarily lead to the other. In practice, the single-sex question is a distraction from what really matters. It sounds obvious, but boys (and girls) will do better if they are taught better by teachers who understand their individual needs. That means skilled practitioners (从业者) using the curriculum creatively to engage and excite every single child in front of them—regardless of their gender. And, incidentally, male and female teachers have equal capacity to get this right. Of course this is hard, and I can say I fell short many times. But just by introducing a gender control on the group isn't going to make it any easier. What about the girl who likes active learning or the boy who is shy? I am not sure they would get a fair deal if our teaching is framed by gender behaviours. In any case, we want kids to be able to perform better in response to all learning environments—not just the ones they are comfortable in. So let girls be boisterous (活跃的), and boys self-reflect. And let them learn together, taught by the best teachers we can find.

单选题The other two bills ______existing laws in Japan and aimed to give the government the power to mobilize the Self-Defense Force.

单选题The ______ of the computer changed people's life greatly.

单选题Let's put our heads together and find a solution ______ the difficulty.

单选题Noreen Welte seems to suggest that some people

单选题If I may be so ______ as to advise you, my opinion is that you should not reply to his letter.

单选题It was very (considerable) (of) you (to send) me the information so (promptly),A. considerableB. lfC. sendD. promptly

单选题The question ______ at the next meeting remains a secret.

单选题Television is one of the means by which these feelings are created and conveyed— and perhaps never before it"s served so much to connect different peoples and nations as in the recent events in Europe.

单选题His lack of a college degree is a definite ______. Otherwise he would get a better job.

单选题______he said he wasn't hungry, he ate a big breakfast.

单选题Showing some sense of humor can be a(n) _____ way to deal with some stressful situation.

单选题When I mention the problem, I"m not ______ all of you.