单选题 Some observers have attributed the dramatic growth in temporary employment that occurred in the United States during the 1980s to increased participation in the workforce by certain groups such as first-time or reentering workers, who supposedly prefer such arrangements. However, statistical analyses reveal that demographic changes in the workforce did not correlate with variations in the total number of temporary workers. Instead, these analyses suggest that factors affecting employers account for the rise in temporary employment. One factor is product demand: temporary employment is favored by employers who are adapting to fluctuating demand for products while at the same time seeking to reduce overall labor costs. Another factor is labor's reduced bargaining strength, which allows employers more control over the terms of employment. Given the analyses, which reveal that growth in temporary employment now far exceeds the level explainable by recent workforce entry rates of groups said to prefer temporary jobs, firms should be discouraged from creating excessive numbers of temporary positions. Government policymakers should consider mandating benefit coverage for temporary employee, promoting pay equity between temporary and permanent workers, assisting labor unions in organizing temporary workers, and encouraging firms to assign temporary jobs primarily to employees who explicitly indicate that preference.

单选题The retired engineer plunked down ＄ 50000 in cash for a mid-size Mercedes as a present for his wife ——a purchase ______ with money made in the stock market the week before. A. paid off B. paid through C. paid out D. paid for

单选题When travelling, you are advised to take travellers' checks, which provide a secure ______to carrying your money in cash.

单选题 Does money buy happiness? It's sometimes said that scientists have found no relationship between money and happiness, but that's myth, says University of Illinois psychologist Ed Diener. The connection is complex. In fact, very rich people rate substantially higher in satisfaction with life than very poor people do, even within wealthy nations, he says. "There is overwhelming evidence that money buys happiness, "said economist Andrew Oswald of University of Warwick in England. The main debate, he said, is how strong the effect is. Oswald recently reported a study of Britons who won between $ 2, 000 and $ 250, 000 in a lottery (彩票拍奖). As a group, they showed a boost in happiness averaging a bit more than one point on a 36-point scale when surveyed two years after their win, compared to their levels two years before they won. Daniel Kahnman, a Nobel-Prize winner and Princeton economist, and colleagues, recently declared that the notion that making a lot of money will produce good overall mood is" mostly illusory". They noted that in one study, members of the high-income group were almost twice as likely to call themselves" very happy" as people from households with incomes below $ 20, 000. But other studies, rather than asking for a summary estimate of happiness, follow people through the day and repeatedly record their feeling. These studies show less effect of income on happiness. Kahnman and colleagues said. There is still another twist to the money-happiness story. Even though people who make $ 150, 000 are considerably happier than those who make $ 40, 000 ,It's not clear why, says psychologist Richard E. Lucas of Michigan State University. Researchers conclude that any effect of money on happiness is smaller than most daydreamers assume. "People exaggerate how much happiness is bought by an extra few thousand," Oswald said. "The quality of relationships has a far bigger effect than quite large rises in salary. It's much better advice, if you're looking for happiness in life, try to find the right husband or wife than to try to double your salary."

单选题Hardly______the train______when the waiting crowd ran towards it.

单选题Do you______her novels as serious literature or as mere entertainment?

单选题Social workers often use ______ in their research.

单选题Bored of using a mouse? Soon you'll be able to change stuff on your computer screen—and then move it directly onto your smart phone or tablet(平板电脑)with nothing more than a glance. A system called Eye Drop uses a head-mounted eye tracker that simultaneously records your field of view so it knows where you are looking on the screen. Gazing at an object—a photo, say—and then pressing a key, selects that object. It can then be moved from the screen to a tablet or smart phone just by glancing at the second device, as long as the two are connected wirelessly. " The beauty of using gaze to support this is that our eyes naturally focus on content that we want to acquire," says Jayson Turner, who developed the system with colleagues at Lancaster University, UK. Turner believes Eye Drop would be useful to transfer an interactive map or contact information from a public display to your smart phone or for sharing photos. A button needs to be used to select the object you are looking at otherwise you end up with the "Midas touch"(点石成金)effect, whereby everything you look at gets selected by your gaze, says Turner. "Imagine if your mouse clicked on everything it pointed at," he says. Christian Holz, a researcher in human-computer interaction at Yahoo Labs in Sunnyvale, California, says the system is a nice take on getting round this fundamental problem of using gaze-tracking to interact. "Eye Drop solves this in a slick(灵巧的)way by combining it with input on the touch devices we carry with us most of the time anyway and using touch input as a clutching mechanism," he says. "This now allows users to seamlessly(无缝地)interact across devices far and close in a very natural manner. " While current eye-trackers are rather bulky, mainstream consumer devices are not too far away. Swedish firm Tobii is developing gaze-tracking technology that can be installed in laptops and tablets and is expected to be available to buy next year. And the Google Glass headset is expected to include eye-tracking in the future. Turner says he has also looked at how content can be cut and pasted or drag-and-dropped using a mix of gaze and taps on a touch screen. The system was presented at the Conference on Mobile and Ubiquitous Multimedia in Sweden, last week.

单选题He had been completely exhausted but fell considerably ______ after a meal and a rest.

单选题The old man was remarkably ______. He was a musician, engineer, writer and philosopher.(2004年上海理工大学考博试题)

单选题As a developing country, we must keep ______ with the rapid development of the world economy. A. move B. step C. speed D. pace

单选题The word "distinct" (in boldface) in the context means ______.

单选题While attempting to look into the case,______ A. he found it was difficult B. the case was difficult C. it happened that the case is difficult D. difficult as the case

单选题They had their electricity ______ because they didn't pay the bill.

单选题Today, I firmly (believe), they (deliver) the new television, and if they (do), I (shall) help you set up the cable stations.

单选题Last year, Sean Martinovich, from Whitianga, had life-saving surgery when a golf-sized tumor was removed from his brain stem. But the operation left half his face paralysed. He talked with a slur, sometimes dribbled out of the side of his mouth and could. not close his eye properly. Although he could run around with the other boys in the playground, when they laughed he could not laugh with them. Without a smile, he would suffer psychologically and emotionally. Last week, 6-year-old Sean had seven hours of microsurgery that should give him back his smile. Doctor Bartlett removed a nerve from the back of one of Sean's legs and transplanted it into his face, On the normal side of his face the nerve divides into lots of little branches. "We'll cut those nerve branches and then we'll take a nerve graft from one leg and tunnel it across his face from one side to the other end join that on to the nerve that's been cut on the good side of his face," Doctor Bartlett said, before the operation. "If this was not fixed, he could face physical and emotional problems as he got older," Doctor Bartlett said. "Socially, people can become quite withdrawn because of face paralysis. It's easy for people, especially children, to become rather emotionless because they prefer the flatness of no movement on either side to the weirdness of an asymmetry of smiling off one side and having this twisted face." Sean is not smiling yet. Over the next six months the nerves will grow across the face to the damaged side and after that movement will hopefully come back. Sean's parents, Steve and Wendy Martinovich, said they had been through a year of hell. But their son was a determined boy who just got on with it, said Mrs. Marfinovich. They are amazed at the technology that they hope will restore the cheeky smile they love so much. For Doctor Bartlett the microsurgery is almost routine. For Sean's parents, it is a miracle.

单选题They are experimenting with "phytotherapy," or plant--and herb-based______, to ameliorate hot flashes, sleeplessness, and more. A. remedies B. renovates C. embellishes D. modifies