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Thinner isn’t always better. A number of studies have 1 that normal-weight people are in fact at higher risk of some diseases compared to those who are overweight. And there are health conditions for which being over-weight is actually 2 . For example, heavier women are less likely to develop calcium deficiency than thin women. 3 , among the elderly, being somewhat overweight is often an 4 of good health.Of even greater 5 is the fact that obesity turns out to be very difficult to define. It is often defined 6 body mass index, or BMI. BMI 7 body mass divided by the square of height. An adult with a BMI of 18 to 25 is often considered to be normal weight. Between 25 and 30 is overweight. And over 30 is considered obese. Obesity, 8 , can be divided into moderately obese, severely obese, and very severely obese.While such numerical standards seem 9 , they are not. Obesity is probably less a matter of weight than body fat. Some people with a high BMI are in fact extremely fit, 10 others with a low BMI may be in poor 11 For example, many collegiate and professional football players 12 as obese, though their percentage body fat is low. Conversely, someone with a small frame may have high body fat but a 13 BMI.Today we have a (an) 14 to label obesity as a disgrace. The overweight are sometimes 15 in the media with their faces covered. Stereotypes 16 with obesity include laziness, lack of will power, and lower prospects for success. Teachers, employers, and health professionals have been shown to harbor biases against the obese. 17 very young children tend to look down on the overweight, and teasing about body build has long been a problem in schools.Negative attitudes toward obesity, 18 in health concerns, have stimulated a number of anti-obesity 19 . My own hospital system has banned sugary drinks from its facilities. Many employers have instituted weight loss and fitness initiatives. Michelle Obama has launched a high-visibility campaign 20 childhood obesity, even claiming that it represents our greatest national security threat.

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A national debate is now（） about whether we should replace golden weeks with paid Vacations.　　

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Against a backdrop of drastic changes in economy and population structure, younger Americans are drawing a new 21st-century road map to success, a latest poll has found.Across generational lines, Americans continue to prize many of the same traditional milestones of a successful life, including getting married, having children, owning a home, and retiring in their sixties. But while young and old mostly agree on what constitutes the finish line of a fulfilling life, they offer strikingly different paths for reaching it.Young people who are still getting started in life were more likely than older adults to prioritize personal fulfillment in their work, to believe they will advance their careers most by regularly changing jobs, to favor communities with more public services and a faster pace of life, to agree that couples should be financially secure before getting married or having children, and to maintain that children are best served by two parents working outside the home, the survey found.From career to community and family, these contrasts suggest that in the aftermath of the searing Great Recession, those just starting out in life are defining priorities and expectations that will increasingly spread through virtually all aspects of American life, from consumer preferences to housing patterns to politics.Young and old converge on one key point: Overwhelming majorities of both groups said they believe it is harder for young people today to get started in life than it was for earlier generations. While younger people are somewhat more optimistic than their elders about the prospects for those starting out today, big majorities in both groups believe those “just getting started in life” face a tougher climb than earlier generations in reaching such signpost achievements as securing a good-paying job, managing debt, and finding affordable housing.Pete Schneider considers the climb tougher today. Schneider, a 27-year-old auto technician from the Chicago suburbs says he struggled to find a job after graduating from college. Even now that he is working steadily, he said. "I can’t afford to pay my monthly mortgage payments on my own, so I have to rent rooms out to people to mark that happen.” Looking back, he is struck that his parents could provide a comfortable life for their children even though neither had completed college when he was young. “I still grew up in an upper middle-class home with parents who didn’t have college degrees,” Schneider said. “I don’t think people are capable of that anymore.”1.One cross-generation mark of a successful life is（）.2.It can be learned from Paragraph 3 that young people tend to （）. 3.The priorities and expectations defined by the young will （）. 4.Both young and old agree that （）. 5.Which of the following is true about Schneider?

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When Microsoft bought task management app Wunderlist and mobile calendar Sunrise in 2015, it picked up two newcomers that were attracting considerable buzz in Silicon Valley. Microsoft’s own Office dominates the market for “productivity” software, but the start-ups represented a new wave of technology designed from the ground up for the smart phone world.Both apps, however, were later scrapped, after Microsoft said it had used their best features in its own products. Their teams of engineers stayed on, making them two of the many “acquit-hires”that the biggest companies have used to feed their insatiable hunger for tech talent.To Microsoft’s critics, the fates of Wunderlist and Sunrise are examples of a remorseless drive by Big Tech to chew up any innovative companies that lie in their.path. “They bought the seedlings and closed them down,” complained Paul Arnold, a partner at San Francisco-based Switch Ventures, putting paid to businesses that might one day turn into competitors. Microsoft declined to comment.Like other start-up investors, Mr Arnold’ s own business often depends on selling start-ups to larger tech companies, though he admits to mixed feelings about the result:“I think these things are good for me, if I put my selfish hat on. But are they good for the American economy? I don’t know.”The US Federal Trade Commission says it wants to find the answer to that question. This week, it asked the five most valuable US tech companies for information about their many small acquisitions over the past decade. Although only a research project at this stage, the request has raised the prospect of regulators wading into early-stage tech markets that until now have been beyond their reach.Given their combined market value of more than $5.5tn, rifling through such small deals—many of them much less prominent than Wunderlist and Sunrise—might seem beside the point. Between them, the five companies (Apple, Microsoft, Google,Amazon and Facebook) have spent an average of only $3.4bn a year on sub-$1bn acquisitions over the past five years—a drop in the ocean compared with their massive financial reserves, and the more than $130bn of venture capital that was invested in the US last year.However, critics say that the big companies use such deals to buy their most threatening potential competitors before their businesses have a chance to gain momentum, in some cases as part of a “buy and kill”. tactic to simply close them down.1.What is true about Wunderlist and sunrise after their acquisitions（）.2. Microsoft’s critics believe that the big tech companies tend to （） . 3.PaulArnold is concerned that small acquisitions might（）.4.The US Federal Trade Commission intend to（）.5.For the five biggest tech companies, their small acquisition have（）.

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When the post fell（）, Dennis Bass was appointed to fill it.

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The two countries achieved some progress in the sphere of trade relations, traditionally a source of （）irritation.

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Happy people work differently. They’re more productive, more creative, and willing to take greater risks. And new research suggests that happiness might influence（1）firms work, too.Companies located in places with happier people invest more, according to a recent research paper. （2） , firms in happy places spend more on R&D (research and development). That’s because happiness is linked to the kind of longer-term thinking （3） for making investments for the future.The researchers wanted to know if the （4） and inclination for risk-taking that come with happiness would （5） the way companies invested. So they compared U.S. cities’ average happiness （6） by Gallup polling with the investment activity of publicly traded firms in those areas.（7） enough, firms’ investment and R&D intensity were correlated with the happiness of the area in which they were （8） .But is it really happiness that’s linked to investment, or could something else about happier cities （9） why firms there spend more on R&D? To find out, the researchers controlled for various （10） that might make firms more likely to invest – like size, industry, and sales – and for indicators that a place was （11） to live in, like growth in wages or population. The link between happiness and investment generally （12） even after accounting for these things.The correlation between happiness and investment was particularly strong for younger firms, which the authors （13） to “less codified decision making process” and the possible presence of “younger and less （14） managers who are more likely to be influenced by sentiment.” The relationship was （15） stronger in places where happiness was spread more （16） .Firms seem to invest more in places where most people are relatively happy, rather than in places with happiness inequality.（17） this doesn’t prove that happiness causes firms to invest more or to take a longer-term view, the authors believe it at least （18）at that possibility. It’s not hard to imagine that local culture and sentiment would help （19） how executives think about the future. “It surely seems plausible that happy people would be more forward-thinking and creative and （20） R&D more than the average,” said one researcher.

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It is true that CEO pay has gone up — top ones may make 300 times the pay of typical workers on average, and since the mid-1970s CEO pay for large publicly traded American corporations has, by varying estimates, gone up by about 500%. The typical CEO of a top American corporation —from the 350 largest such companies — now makes about $18.9 million a year.The best model for understanding the growth of CEO pay is that of limited CEO talent in a world where business opportunities for the top firms are growing rapidly. The efforts of America’s highest-earning 1% have been one of the more dynamic elements of the global economy. It’s not popular to say, but one reason their pay has gone up so much is that CEOs really have upped their game relative to many other workers in the U.S. economy.Today’s CEO, at least for major American firms, must have many more skills than simply being able to “run the company”. CEOs must have a good sense of financial markets and maybe even how the company should trade in them. They also need better public relations skills than their predecessors, as the costs of even a minor slipup can be significant. Then there’s the fact that large American companies are much more globalized than ever before, with supply chains spread across a larger number of countries. To lead in that system requires knowledge that is fairly mind-boggling plus, virtually all major American companies are beyond this major CEOs still have to do all the day-to-day work they have always done. The common idea that high CEO pay is mainly about ripping people off doesn’t explain history very well. By most measures, corporate governance has become a lot tighter and more rigorous since the 1970s. Yet it is principally during this period of stronger governance that CEO pay has been high and rising. That suggests it is in the broader corporate interest to recruit top candidates for increasingly tough jobs.Furthermore, the highest CEO salaries are paid to outside candidates, not to the cozy insider picks, another sign that high CEO pay is not some kind of depredation at the expense of the rest of the company. And the stock market reacts positively when companies tie CEO pay to, say, stock prices, a sign that those practices build up corporate value not just for the CEO.（1）Which of the following has contributed to CEO pay rise?（2）Compared with their predecessors, today’s CEOs are required to（） .（3）CEO pay has been rising since the 1970s despite（）.（4）High CEO pay can be justified by the fact that it helps（）.（5）The most suitable title for this text would be（）.

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In 2010, a federal judge shook America’s biotech industry to its core. Companies had won patents for isolated DNA for decades—by 2005 some 20% of human genes were patented. But in March 2010 a judge ruled that genes were unpatentable. Executives were violently agitated. The Biotechnology Industry Organisation ( BIO) , a trade group, assured members that this was just a “preliminary step” in a longer battle.On July 29th they were relieved, at least temporarily. A federal appeals court overturned the prior decision, ruling that Myriad Genetics could indeed hold patents to two genes that help forecast a woman’s risk of breast cancer. The chief executive of Myriad, a company in Utah, said the ruling was a blessing to firms and patients alike.But as companies continue their attempts at personalised medicine, the courts will remain rather busy. The Myriad case itself is probably not over. Critics make three main arguments against gene patents: a gene is a product of nature, so it may not be patented; gene patents suppress innovation rather than reward it; and patents’ monopolies restrict access to genetic tests such as Myriad’s. A growing number seem to agree. Last year a federal task-force urged reform for patents related to genetic tests. In October the Department of Justice filed a brief in the Myriad case, arguing that an isolated DNA molecule “is no less a product of nature...than are cotton fibres that have been separated from cotton seeds.Despite the appeals court’s decision, big questions remain unanswered. For example, it is unclear whether the sequencing of a whole genome violates the patents of individual genes within it. The case may yet reach the Supreme Court.As the industry advances, however, other suits may have an even greater impact. Companies are unlikely to file many more patents for human DNA molecules—most are already patented or in the public domain. Firms are now studying how genes interact, looking for correlations that might be used to determine the causes of disease or predict a drug’s efficacy. Companies are eager to win patents for “connecting the dots”, explains Hans Sauer, a lawyer for the BIO.Their success may be determined by a suit related to this issue, brought by the Mayo Clinic, which the Supreme Court will hear in its next term. The BIO recently held a convention which included sessions to coach lawyers on the shifting landscape for patents. Each meeting was packed. (407 words)1.It can be learned from Paragraph 1 that the biotech companies would like （）.2.Those who are against gene patents believe that （）. 3.According to Hans Sauer, companies are eager to win patents for （）. 4.By saying “Each meeting was packed”(Para. 6) the author means that （）. 5.Generally speaking, the author’s attitude toward gene patenting is（）.

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Five ways to make conversation with anyoneConversations are links, which means when you have a conversation with a new person, a link gets formed and every conversation you have after that moment will strengthen the link. You meet new people every day: the grocery worker, the cab driver, new people at work or the security guard at the door. Simply starting a conversation with them will form a link. Here are five simple ways that you can make the fit move and start a conversation with strangers.1. Suppose you are in a room with someone you don't know and something within you says “I want to talk with this person”-this is something that mostly happens with all of us. You wanted to say something-the first word-but it just won't come out, it feels like it is stuck somewhere. I know the feeling and here is my advice: just get it out. Just think: what is the worst that could happen? They won't talk with you? Well, they are not talking you now! I truly believe that once you get that first word out everything will just flow. I truly believe that once you get that first word out everything else will just flow. So keep it simple "hi", "hey" or "hello"-do the best you can to gather all of the enthusiasm and energy you can, put on a big smile and say "hi".2. It's a problem all of us face; you have limited time with the person that you want to talk with and you want to make this talk memorable. Honestly, if we got stuck in the rut of “hi”, “hello”, “how are you?” and “what's going on?”, you will fail to give the initial jolt to the conversation that can make it so memorable.So don't be afraid to ask more personal questions. Trust me, you'll be surprised to see how much people are willing to share if you just ask.3. When you meet a person for the first time, make an effort to find the things which you and that person have in common so that you can build the conversation from that point. When you start conversation from there and then move outwards, you'll find all of a sudden that the conversation becomes a lot easier.4. Imagine you are pouring your heart out to someone and they are just busy on their phone, and if you ask for their attention you get the response “I can multitask”. So when someone tries to communicate with you, just be in that communication wholeheartedly. Make eye contact. Trust me, eye contact is where all the magic happens. When you make eye contact, you can feel the conversation.5. You all came into a conversation where you first met the person, but after some time you may have met again and have forgotten their name. Isn't that awkward! So, remember the little details of the people you met or you talked with; perhaps the places they have been to, the places they want to go, the things they like, the things they hate-whatever you talk about. When you remember such things you can automatically become investor in their well being. So they feel a responsibility to you to keep that relationship going.That's it. Five amazing ways that you can make conversation with almost anyone. Every person is a really good book to read, or to have a conversation with!

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Since the（） of human history, human beings have been asking questions like "What is the essence of life."　　

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Now that members of Generation Z are graduating college this spring — the most commonly-accepted definition says this generation was born after 1995, give or take a year — the attention has been rising steadily in recent weeks. GenZs are about to hit the streets looking for work in a labor market that’s tighter than it’s been in decades. And employers are planning on hiring about 17 percent more new graduates for jobs in the U.S. this year than last, according to a survey conducted by the National Association of Colleges and Employers. Everybody wants to know how the people who will soon inhabit those empty office cubicles will differ from those who came before them.If “entitled” is the most common adjective, fairly or not, applied to millennials (those born between 1981 and1995), the catchwords for Generation Z are practical and cautious. According to the career counselors and experts who study them, Generation Zs are clear-eyed, economic pragmatists. Despite graduating into the best economy in the past 50 years, Gen Zs know what an economic train wreck looks like. They were impressionable kids during the crash of 2008, when many of their parents lost their jobs or their life savings or both. They aren’t interested in taking any chances. The booming economy seems to have done little to assuage this underlying generational sense of anxious urgency, especially for those who have college debt. College loan balances in the U.S. now stand at a record $1.5 trillion, according to the Federal Reserve.One survey from Accenture found that 88 percent of graduating seniors this year chose their major with a job in mind. In a 2019 survey of University of Georgia students, meanwhile, the career office found the most desirable trait in a future employer was the ability to offer secure employment (followed by professional development and training, and then inspiring purpose). Job security or stability was the second most important career goal (work-life balance was number one), followed by a sense of being dedicated to a cause or to feel good about serving the greater good. That's a big change from the previous generation. “Millennials wanted more flexibility in their lives,” notes Tanya Michelsen, Associate Director of YouthSight, a UK-based brand manager that conducts regular 60-day surveys of British youth, in findings that might just as well apply to American youth. “Generation Z are looking for more certainty and stability, because of the rise of the gig economy. They have trouble seeing a financial future and they are quite risk averse.”（1）Generation Zs graduating college this spring（）.（2）Generation Zs are keenly aware（）.（3）The word “assuage” (line 9, para 2) is closet in meaning to（）.（4）It can be learned from Paragraph 3 that Generation Zs（）.（5）Michelsen thinks that compared with millennials, Generation Zs are（）.

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After his uncle died，the young man（）the beautiful estate with which he changed from a poor man to a wealthy noble.

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Your social life is defined as "the activities you do with other people, for pleasure, when you are not working". It's important to have a social life, but what's right for one person won’t be right for another. Some of us feel energized by spending lots of time with others, （ 1 ） some of us may feel drained, even if it’s doing something we enjoy.This is why finding a （ 2 ） in your social life is key. Spending too much time on your own, not （ 3 ） others, can make you feel lonely and （ 4 ）. Loneliness is known to impact on your mental health and （ 5 ） a low mood. Anyone can feel lonely at any time. This might be especially true if, （ 6 ） you are working from home and you are （ 7 ）on the social conversations that happen in the office. Other life changes also （ 8 ） periods of loneliness too, such as retirement, changing a job or becoming a parent.It’s important to recognize feelings or loneliness. There are ways to （ 9 ） a social life. But it be overwhelming （ 10 ）. You can then find groups and activities related to those where you will be able to meet （ 11 ） people. There are groups aimed at new parents, at those who want to （ 12 ） a new sport for the first time or networking events for those in the same profession to meet up and （ 13 ） ideas.On the other hand, it is （ 14 ）possible to have too much of a social life. If you feel like you’re always doing something and there is never any （ 15 ） in your calendar for downtime, you could suffer social burnout or social （ 16 ）. We all have our own social limit and it's important to recognize when you're feeling like it's all too much. Low mood, low energy, irritability and trouble sleeping could all be （ 17 ） of poor social health. Make sure you （ 18 ） some time in your diary when you're （ 19 ） for socializing and use this time to relax, （ 20 ） and recover.

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The UK is facing a future construction crisis because of a failure to plant trees to produce wood, Confor has warned. The forestry and wood trade body has called for urgent action to reduce the country’s reliance on timber imports and provide a stable supply of wood for future generations. Currently only 20 percent of the UK’s wood requirement is home-grown while it remains the second-largest net importer of timber in the world.Coming at a time of fresh incentives from the UK government for landowners to grow more trees, the trade body says these don’t go far enough and fail to promote the benefits of planting them to boost timber supplies. “Not only are we facing a carbon crisis now, but we will also be facing a future construction crisis because of failure to plant trees to produce wood,” said Stuart Goodall, chief executive of Confor. “For decades we have not taken responsibility for investing in our domestic wood supply, leaving us exposed to fluctuating prices and fighting for future supplies of wood as global demand rises and our own supplies fall.”The UK has ideal conditions for growing wood to build low-carbon homes and is a global leader in certifying that its forests are sustainably managed, Confor says. While around three quarters of Scottish homes are built from Scottish timber, the use of home-grown wood in England is only around 25 per cent. The causes of the UK’s current position are complex and range from outdated perceptions of productive forestry to the decimation of trees by grey squirrels. It also encompasses significant hesitation on behalf of farmers and other landowners to invest in longer-term planting projects.While productive tree planting can deliver real financial benefits to rural economies and contribute to the UK’s net zero strategy, the focus of government support continues to be on food production and the rewinding and planting of native woodland solely for biodiversity. Goodall added: “While food production and biodiversity are clearly of critical importance, we need our land to also provide secure supplies of wood for construction, manufacturing and to contribute to net zero.”“While the UK government has stated its ambition for more tree planting, there has been little action on the ground.” Confor is now calling for much greater impetus behind those aspirations to ensure we have enough wood to meet increasing demand.”1.It can be learned from Paragraph 1 that the UK needs to.2.According to Confor, the UK government’s fresh incentives.3.The UK’s exposure to fluctuating wood prices is the result of.4.Which of the following causes the shortage of wood supply in the UK?5.What does Goodall think the UK government should do?

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In her new book Cogs and Monsters: What Economics Is, and What It Should Be, Diane Coyle, an economist at Cambridge University, argues that the digital economy requires new ways of thinking about progress. “Whatever we mean by the economy growing, by things getting better, the gains will have to be more evenly shared than in the recent past,” she writes. “An economy of tech millionaires or billionaires and gig workers, with middle-income jobs undercut by automation, will not be politically sustainable.”Improving living standards and increasing prosperity for more people will require greater use of digital technologies to boost productivity in various sectors, including health care and construction, says Coyle. But people can’t be expected to embrace the changes if they’re not seeing the benefits—if they’re just seeing good jobs being destroyed.In a recent interview with MIT Technology Review, Coyle said she fears that tech’s inequality problem could be a roadblock to deploying AI. “We’re talking about disruption,” she says. “These are transformative technologies that change the ways we spend our time every day, that change business models that succeed.” To make such “tremendous changes,” she adds, you need social buy-in.Instead, says Coyle, resentment is simmering among many as the benefits are perceived to go to elites in a handful of prosperous cities.According to the Brookings Institution, a short list of eight American cities that included San Francisco, San Jose, Boston, and Seattle had roughly 38% of all tech jobs by 2019. New AI technologies are particularly concentrated: Brookings’s Mark Muro and Sifan Liu estimate that just 15 cities account for two-thirds of the AI assets and capabilities in the United States.The dominance of a few cities in the invention and commercialization of AI means that geographical disparities in wealth will continue to soar. Not only will this foster political and social unrest, but it could, as Coyle suggests, hold back the sorts of AI technologies needed for regional economies to grow.Part of the solution could lie in somehow loosening the stranglehold that Big Tech has on defining the AI agenda. That will likely take increased federal funding for research independent of the tech giants.A more immediate response is to broaden our digital imaginations to conceive of AI technologies that don’t simply replace jobs but expand opportunities in the sectors that different parts of the country care most about, like health care, education, and manufacturing.1. Coyle argues in her new book that economic growth should .2. According to Paragraph 2, digital technologies should be used to .3. What does Coyle fear about transformative technologies?4. Several American cities are mentioned to show .5. With regard to Coyle’s concern, the author suggests .

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Ruth Simmons joined Goldman Sachs’s board as an outside director in January 2000; a year later she became president of Brown University. For the rest of the decade she apparently managed both roles without attracting much criticism. But by the end of 2009 Ms. Simmons was under fire for having sat on Goldman’s compensation committee; how could she have let those enormous bonus payouts pass unremarked? By February the next year Ms. Simmons had left the board. The position was just taking up too much time, she said.Outside directors are supposed to serve as helpful, yet less biased, advisers on a firm’s board. Having made their wealth and their reputations elsewhere, they presumably have enough independence to disagree with the chief executive’s proposals. If the sky, and the share price, is falling, outside directors should be able to give advice based on having weathered their own crises.The researchers from Ohio University used a database that covered more than 10, 000 firms and more than 64, 000 different directors between 1989 and 2004. Then they simply checked which directors stayed from one proxy statement to the next. The most likely reason for departing a board was age, so the researchers concentrated on those “surprise” disappearances by directors under the age, of 70. They found that after a surprise departure, the probability that the company will subsequently have to restate earnings increased by nearly 20%. The likelihood of being named in a federal class-action lawsuit also increases, and the stock is likely to perform worse. The effect tended to be larger for larger firms. Although a correlation between them leaving and subsequent bad performance at the firm is suggestive, it does not mean that such directors are always jumping off a sinking ship. Often they “trade up”, leaving riskier, smaller firms for larger and more stable firms.But the researchers believe that outside directors have an easier time of avoiding a blow to their reputations if they leave a firm before bad news breaks, even if a review of history shows they were on the board at the time any wrongdoing occurred. Firms who want to keep their outside directors through tough times may have to create incentives. Otherwise outside directors will follow the example of Ms. Simmons, once again very popular on campus. (382 words)1.According to Paragraph 1, Ms. Simmons was criticized for （）.2.We learn from Paragraph 2 that outside directors are supposed to be （）. 3.According to the researchers from Ohio University after an outside director’s surprise departure, the firm is likely to （）. 4.It can be inferred from the last paragraph that outside directors （）. 5.The author’s attitude toward the role of outside directors is（）.

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A century ago, the immigrants from across the Atlantic included settlers and sojourners. Along with the many folks looking to make a permanent home in the United States came those who had no intention to stay, and who would make some money and them go home. Between 1908 and 1915, about 7 million people arrived while about 2 million departed. About a quarter of all Italian immigrants, for example, eventually returned to Italy for good. They even had an affectionate nickname, “uccelli di passaggio”, birds of passage.Today, we are much more rigid about immigrants. We divide newcomers into two categories: legal or illegal, good or bad. We hail them as Americans in the making, or brand them as aliens to be kicked out. That framework has contributed mightily to our broken immigration system and the long political paralysis over how to fix it. We don’t need more categories, but we need to change the way we think about categories. We need to look beyond strict definitions of legal and illegal. To start, we can recognize the new birds of passage, those living and thriving in the gray areas. We might then begin to solve our immigration challenges.Crop pickers, violinists, construction workers, entrepreneurs, engineers, home health-care aides and physicists are among today’s birds of passage. They are energetic participants in a global economy driven by the flow of work, money and ideas. They prefer to come and go as opportunity calls them. They can manage to have a job in one place and a family in another.With or without permission, they straddle laws, jurisdictions and identities with ease. We need them to imagine the United States as a place where they can be productive for a while without committing themselves to staying forever. We need them to feel that home can be both here and there and that they can belong to two nations honorably.Accommodating this new world of people in motion will require new attitudes on both sides of the immigration battle. Looking beyond the culture war logic of right or wrong means opening up the middle ground and understanding that managing immigration today requires multiple paths and multiple outcomes, including some that are not easy to accomplish legally in the existing system.1.“Birds of passage” refers to those who （）.2.It is implied in Paragraph 2 that the current immigration system in the U. S. （）. 3.According to the author, today’s birds of passage want （）. 4.The author suggests that the birds of passage today should be treated （）. 5.The most appropriate title for this text would be（）.

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The employees tried to settle the dispute by direct （）with the boss.

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One of the biggest challenges in keeping unsafe aging drivers off the road is convincing them that it’s time to turn over the keys. “It’s a complete life-changer” when someone stops—or is forced to stop—driving, said former risk manager Anne M. Menke.“The American Medical Association advises physicians that ‘in situation where clear evidence of substantial driving impairment implies a strong threat to patient and public safety, and where the physician’s advice to discontinue driving privileges is ignored, it is desirable and ethical to notify the Department of Motor Vehicles,’” Menke wrote. “Some states require physicians to report, others allow but do not mandate reports, while a few consider a report breach of confidentiality. There could be liability and penalties if a physician does not act in accordance with state laws on reporting and confidentiality,” she counseled.Part of the problem in keeping older drivers safe is that the difficulties are addressed piecemeal by different professions with different focuses, including gerontologists, highway administration officials, automotive engineers and others, said gerontologist Elizabeth Dugan. “There’s not a National Institute of Older Driver Studies,” she said. “We need better evidence on what makes drivers unsafe and what can help,” said Dugan.One thing that does seem to work is requiring drivers to report in person for license renewal. Mandatory in-person renewal was associated with a 31 percent reduction in fatal crashes involving drivers 85 or older, according to one study. Passing vision tests also produced a similar decline in fatal crashes for those drivers, although there appeared to be no benefit from combining the two.Many old drivers don’t see eye doctors or can’t afford to. Primary care providers have their hands full and may not be able to follow through with patients who have trouble driving because they can’t turn their heads or remember where they are going—or have gotten shorter and haven’t changed their seat settings sufficiently to reach car pedals easily.As long as there are other cars on the roads, self-driving cars won’t solve the problems of crashes, said Dugan. Avoiding dangers posed by all those human drivers would require too many algorithms, she said. But we need to do more to improve safety, said Dugan. “If we’re going to have 100-year lives, we need cars that a 90-year-old can drive comfortably.”1.According to Paragraph1, keeping unsafe aging drivers off the road .2.The American Medical Association’s advice .3.According to Dugan, efforts to keep older drivers safe _.4.Some older drivers have trouble driving because they tend to _.5.Dugan thinks that the solution to the problems of crashes may lie in_____.

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