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Unfortunately, life is not a bed of roses. We are going through life facing sad experiences. Moreover, we are grieving various kinds of loss: a friendship, a romantic relationship or a house. Hard times may hold you down at what usually seems like the most inopportune time, but you should remember that they won’t last forever.When our time of mourning is over, we press forward, stronger with a greater understanding and respect for life. Furthermore, these losses make us mature and eventually move us toward future opportunities for growth and happiness. I want to share these ten old truths I’ve learned along the way.1. ___Fear is both useful and harmful. This normal human reaction is used to protect us by signaling danger and preparing us to deal with it. Unfortunately, people create inner barriers with a help of exaggerating fears. My favorite actor Will Smith once said, “Fear is not real. It is a product of thoughts you create. Do not misunderstand me. Danger is very real. But fear is a choice.” I do completely agree that fears are just the product of our luxuriant imagination.2. _If you are surrounded by problems and cannot stop thinking about the past, try to focus on the present moment. Many of us are weighed down by the past or anxious about the future. You may feel guilt over your past, but you are poisoning the present with the things and circumstances you cannot change. Value the present moment and remember how fortunate you are to be alive. Enjoy the beauty of the world around and keep the eyes open to see the possibilities before you. Happiness is not a point of future and not a moment from the past, but a mindset that can be designed into the present.3. _Sometimes it is easy to feel bad because you are going through tough times. You can be easily caught up by life problems that you forget to pause and appreciate the things you have. Only strong people prefer to smile and value their life instead of crying and complaining about something.4. _No matter how isolated you might feel and how serious the situation is, you should always remember that you are not alone. Try to keep in mind that almost everyone respects and wants to help you if you are trying to make a good change in your life, especially your dearest and nearest people. You may have a circle of friends who provide constant good humor, help and companionship. If you have no friends or relatives, try to participate in several online communities, full of people who are always willing to share advice and encouragement.5. ___Today many people find it difficult to trust their own opinion and seek balance by gaining objectivity from external sources. This way you devalue your opinion and show that you are incapable of managing your own life. When you are struggling to achieve something important you should believe in yourself and be sure that your decision is the best. You live in your skin, think your own thoughts, have your own values and make your own choices.

Unlike so-called basic emotions such as sadness, fear, and anger, guilt emerges a little later, in conjunction with a child’s growing grasp of social and moral norms. Children aren’t born knowing how to say “I’m sorry”; rather, they learn over time that such statements appease parents and friends—and their own consciences. This is why researchers generally regard so-called moral guilt, in the right amount, to be a good thing: A child who claims responsibility for knocking over a tower and tries to rebuild it is engaging in behavior that’s not only reparative but also prosocial.In the popular imagination, of course, guilt still gets a bad rap. It evokes Freud’s ideas and religious hang-ups. More important, guilt is deeply uncomfortable—it’s the emotional equivalent of wearing a jacket weighted with stones. Who would inflict it upon a child? Yet this understanding is outdated. “There has been a kind of revival or a rethinking about what guilt is and what role guilt can serve,” Vaish says, adding that this revival is part of a larger recognition that emotions aren’t binary—feelings that may be advantageous in one context may be harmful in another. Jealousy and anger, for example, may have evolved to alert us to important inequalities. Too much happiness (think mania) can be destructive.And guilt, by prompting us to think more deeply about our goodness, can encourage humans to atone for errors and fix relationships. Guilt, in other words, can help hold a cooperative species together. It is a kind of social glue.Viewed in this light, guilt is an opportunity. Work by Tina Malti, a psychology professor at the University of Toronto, suggests that guilt may compensate for an emotional deficiency. In a number of studies, Malti and others have shown that guilt and sympathy (and its close cousin empathy) may represent different pathways to cooperation and sharing. Some kids who are low in sympathy may make up for that shortfall by experiencing more guilt, which can rein in their nastier impulses. And vice versa: High sympathy can substitute for low guilt.In a 2014 study, for example, Malti and a colleague looked at 244 children, ages 4, 8, and 12. Using caregiver assessments and the children’s self-observations, they rated each child’s overall sympathy level and his or her tendency to feel negative emotions (like guilt and sadness) after moral transgressions. Then the kids were handed stickers and chocolate coins, and given a chance to share them with an anonymous child. For the low-sympathy kids, how much they shared appeared to turn on how inclined they were to feel guilty. The guilt-prone ones shared more, even though they hadn’t magically become more sympathetic to the other child’s deprivation.1.Researchers think that guilt can be a good thing because it may help （）.2.According to Paragraph 2, many people still consider guilt to be （）. 3.Vaish holds that the rethinking about guilt comes from an awareness that （）. 4.Malti and others have shown that cooperation and sharing （）. 5.The word “transgressions”（Line 4, Para. 5） is closest in meaning to （）.

下列有关浮点数加减运算的叙述中，正确的是（）。Ⅰ.对阶操作不会引起阶码上溢或下溢Ⅱ.右规和尾数舍入都可能引起阶码上溢Ⅲ.左规时可能引起阶码下溢Ⅳ.尾数溢出时结果不一定溢出

按字节编址的计算机中，某double型数组A的首地址为2000H，使用变址寻址和循环结构访问数组A，保存数组下标的变址寄存器初值为0，每次循环取一个数组元素，其偏移地址为变址值乘以sizeof(double)，取完后变址寄存器内容自动加1。若某次循环所取元素的地址为2100H，则进入该次循环时变址寄存器的内容是（）。

下列关于多重中断系统的叙述中，错误的是（）。

若一棵二叉树度为2的结点有18个，度为1的结点有10个，则度为0的结点个数是（）。

银行家算法采用了死锁预防的方法。

如果有多个中断同时发生，系统将根据优先级响应最高级的中断请求，若要调整中断事件的响应次序，可以利用（）。

循环队列存储在数组A[0..m]中，则入队时的操作为（）。

队列操作的特点是（）。

操作系统使用的缓冲技术，多数通过外存来实现。（）

序列{8，9，10，4，5，6，20，11，12}只能是（）两趟排序后的结果。

Here’s a common scenario that any number of entrepreneurs face today: you’re the CEO of a small business, and though you’re making a nice 1, you need to find a way to take it to the next level. What you need to do is 2 growth by establishing a growth team. A growth team is made up of members from different departments within your company, and it harnesses the power of collaboration to focus 3 on finding ways to grow. Let’s look at a real-world 4. Prior to forming a growth team, the software company BitTorrent had 50 employees working in the 5 departments of engineering, marketing and product development. This brought them good results until 2012, when their growth plateaued. The 6 was that too many customers were using the basic, free version of their product. And 7 improvements to the premium, paid version, few people were making the upgrade. Things changed, 8, when an innovative project-marketing manager came aboard, 9 a growth team and sparked the kind of 10 perspective they needed. By looking at engineering issues from a marketing point of view, it became clear that the 11 of upgrades wasn’t due to a quality issue. Most customers were simply unaware of the premium version and what it offered. Armed with this 12 the marketing and engineering teams joined forces to raise awareness by prominently 13 the premium version to users of the free version. 14, upgrades skyrocketed, and revenue increased by 92 percent. But in order for your growth team to succeed, it needs to have a strong leader. It needs someone who can 15 the interdisciplinary team and keep them on course for improvement. This leader will 16 the target area, set clear goals and establish a time frame for the 17 of these goals. The growth leader is also 18 for keeping the team focused on moving forward and steering them clear of distractions. 19 attractive new ideas can be distracting, the team leader must recognize when these ideas don’t 20 the current goal and need to be put on the back burner.

In the quest for the perfect lawn, homeowners across the country are taking a shortcut—and it is the environment that is paying the price. About eight million square metres of plastic grass is sold each year but opposition has now spread to the highest gardening circles. The Chelsea Flower Show has banned fake grass from this year’s event, declaring it to be not part of its ethos. The Royal Horticultural Society (RHS), which runs the annual show in west London, says it has introduced the ban because of the damage plastic grass does to the environment and biodiversity. Ed Horne, of the RHS, said: “We launched our sustainability strategy last year and fake grass is just not in line with our ethos and views on plastic. We recommend using real grass because of its environmental benefits, which include supporting wildlife alleviating flooding and cooling the environment.” The RHS’s decision comes as campaigners try to raise awareness of the problems fake grass causes. A Twitter account, which claims to “cut through the greenwash” of artificial grass, already has more than 20,000 followers. It is trying to encourage people to sign two petitions, one calling for a ban on the sale of plastic grass and another calling for an “ecological damage” tax on such lawns. They have gathered 7,276 and 11,282 signatures. However, supporters of fake grass point out that there is also an environmental impact with natural lawns, which need mowing and therefore usually consume electricity or petrol. The industry also points out that real grass requires considerable amounts of water, weed killer or other treatments and that people who lay fake grass tend to use their garden more. The industry also claims that people who lay fake grass spend an average of £500 on trees or shrubs for their garden, which provides habitat for insects. In response to another petition last year about banning fake lawns, which gathered 30,000 signatures, the government responded that it has “no plans to ban the use of artificial grass”. It added: “We prefer to help people and organizations make the right choice rather than legislating on such matters. However, the use of artificial grass must comply with the legal and policy safeguards in place to protect biodiversity and ensure sustainable drainage, while measures such as the strengthened biodiversity duty should serve to encourage public authorities to consider sustainable alternatives.”1. The RHS thinks that plastic grass .2. The petitions mentioned in Paragraph 3 reveal the campaigners’ .3. In Paragraph 4, supporters of fake grass point out .4. What should the government do with regard to artificial grass?5. It can be learned from the text that fake grass .

It’s easy to dismiss as absurd the federal government’s ideas for plugging the chronic funding gap of our national parks. Can anyone really think it’s a good idea to allow Amazon deliveries to your tent in Yosemite or food trucks to line up under the redwood trees at Sequoia National Park? But the administration is right about one thing: U.S. national parks are in crisis. Collectively, they have a maintenance backlog of more than $12 billion. Roads, trails, restrooms, visitor centers and other infrastructure are crumbling. But privatizing and commercializing the campgrounds would not be the panacea that the Interior Department’s Outdoor Advisory Committee would have us believe. Campgrounds are a tiny portion of the overall infrastructure backlog, and concessionaires in the parks hand over, on average, only about 5% of their revenues to the National Park Service. Moreover, increased privatization would certainly undercut one of the major reasons why 300 million visitors come to the parks each year: to enjoy nature and get a respite from the commercial drumbeat that overwhelms daily life. The real problem is that the parks have been chronically starved of funding. We conducted a comprehensive survey examining how U.S. residents view their national parks, and we found that Americans place a very high value on them—whether or not they actually visit them. The peer-reviewed economic survey of 700 U.S. taxpayers, conducted by mail and internet, also found that people would be willing to pay a significant amount of money to make sure the parks and their programs are kept intact. Some 81% of respondents said they would be willing to pay additional taxes for the next 10 years to avoid any cuts to the national parks. The national parks provide great value to U.S. residents both as places to escape and as symbols of nature. On top of this, they produce value from their extensive educational programs, their positive impact on the climate through carbon sequestration, their contribution to our cultural and artistic life, and of course through tourism. The parks also help keep America’s past alive, working with thousands of local jurisdictions around the country to protect historical sites—including Ellis Island and Gettysburg—and to bring the stories of these places to life. The parks do all this on a shoestring. Congress allocates only $3 billion a year to the national park system—an amount that has been flat since 2001 (in inflation-adjusted dollars) with the exception of a onetime boost in 2009 as part of the Obama stimulus package. Meanwhile, the number of annual visitors has increased by more than 50% since 1980, and now stands at 330 million visitors per year.1. What problem are U.S. national parks faced with .2. Increased privatization of the campground may .3. According to para. 5, most respondents in the survey would .4. The national parks are valuable in that they .5. It can be concluded from the text that the national park system .

The Internet may be changing merely what we remember, not our capacity to do so, suggests Columbia University psychology professor Betsy Sparrow. In 2011, Sparrow led a study in which participants were asked to record 40 factoids in a computer (“an ostrich’s eye is bigger than its brain,” for example). Half of the participants were told the information would be erased, while the other half were told it would be saved. Guess what? The latter group made no effort to recall the information when quizzed on it latter, because they knew they could find it on their computers. In the same study, a group was asked to remember both the information and the folders it was stored in. They didn’t remember the information, but they remembered how to find the folders. In other words, human memory is not deteriorating but “adapting to new communications technology,” Sparrow says.In a very practical way, the Internet is becoming an external hard drive for our memories, a process known as “cognitive offloading.” Traditionally, this role was fulfilled by data banks, libraries, and other humans. Your father may never remember birthdays because your mother does, for instance. Some worry that this is having a destructive effect on society, but Sparrow sees an upside. Perhaps, she suggests, the trend will change our approach to learning from a focus on individual facts and memorization to an emphasis on more conceptual thinking—something that is not available on the Internet. “I personally have never seen all that much intellectual value in memorizing things,” Sparrow says, adding that we haven’t lost our ability to do it.Still other experts say it’s too soon to understand how the Internet affects our brains. There is no experimental evidence showing that it interferes with our ability to focus, for instance, wrote psychologists Christopher Chabris and Daniel Simons. And surfing the web exercised the brain more than reading did among computer-savvy older adults in a 2008 study involving 24 participants at the Semel Institute for Neuroscience and Human Behavior at the University of California, Los Angels.“There may be costs associated with our increased reliance on the Internet, but I’d have to imagine that the overall benefits are going to outweigh those costs,” observes psychology professor Benjamin Storm. “It seems pretty clear that memory is changing, but is it changing for the better? At this point, we don’t know.”1. Sparrow’s study shows that with the Internet, the human brain will .2. The process of “cognitive offloading” .3. Which of the following would Sparrow support about the Internet?4. It is indicated in Paragraph 3 that how the Internet affects our brains .5. Neither Sparrow nor Storm would agree that .

Teenagers are paradoxical. That’s a mild and detached way of saying something that parents often express with considerably stronger language. But the paradox is scientific as well as personal. In adolescence, helpless and dependent children who have relied on grown-ups for just about everything become independent people who can take care of themselves and help each other. At the same time, once cheerful and compliant children become rebellious teenage risk-takers, often to the point of self-destruction. Accidental deaths go up dramatically in adolescence. A new study published in the journal Child Development, by Eveline Crone of the University of London and colleagues, suggests that the positive and negative sides of teenagers go hand in hand. The study is part of a new wave of thinking about adolescence. For a long time, scientists and policy makers concentrated on the idea that teenagers were a problem that needed to be solved. The new work emphasizes that adolescence is a time of opportunity as well as risk. The researchers studied “prosocial” and rebellious traits in more than 200 children and young adults, ranging from 11 to 28 years old. The participants filled out questionnaires about how often they did things that were altruistic and positive, like sacrificing their own interests to help a friend, or rebellious and negative, like getting drunk or staying out late. Other studies have shown that rebellious behavior increases as you become a teenager and then fades away as you grow older. But the new study shows that, interestingly, the same pattern holds for prosocial behavior. Teenagers were more likely than younger children or adults to report that they did things like unselfishly help a friend. Most significantly, there was a positive correlation between prosociality and rebelliousness. The teenagers who were more rebellious were also more likely to help others. The good and bad sides of adolescence seem to develop together. Is there some common factor that underlies these apparently contradictory developments? One idea is that teenage behavior is related to what researchers call “reward sensitivity”. Decision-making always involves balancing rewards and risks, benefits and costs. “Reward sensitivity” measures how much reward it takes to outweigh risk. Teenagers are particularly sensitive to social rewards—winning the game, impressing a new friend, getting that boy to notice you. Reward sensitivity, like prosocial behavior and risk-taking, seems to go up in adolescence and then down again as we age. Somehow, when you hit 30, the chance that something exciting and new will happen at that party just doesn’t seem to outweigh the effort of getting up off the couch.1. According to paragraph 1 children growing into adolescence tend to .2. It can be learned from paragraph 2 that Crone’s study .3. What does Crone’s study find about prosocial behavior?4. It can be learned from the last two paragraphs that teenagers .5. What is the text mainly about?

Directions: Read the following text and answer the questions by choosing the most suitable subheading from the list A-G for each numbered paragraphs (41-45). There are two extra subheadings which you do not need to use. Mark your answers on the ANSWER SHEET. (10 points)Net-zero rules set to send cost of new homes and extensions soaringNew building regulations aimed at improving energy efficiency are set to increase the price of new homes, as well as those of extensions and loft conversions on existing ones.The rules, which came into effect on Wednesday in England, are part of government plans to reduce the UK’s carbon emissions to net zero by 2050. They set new standards for ventilation, energy efficiency and heating, and state that new residential buildings must have charging points for electric vehicles.The moves are the most significant change to building regulations in years, and industry experts say they will inevitably lead to higher prices at a time when a shortage of materials and high labour costs are already driving up bills.Brian Berry, chief executive of the Federation of Master Builders, a trade group for small and medium-sized builders, says the measures will require new materials, testing methods, products and systems to be installed. “All this comes at an increased cost during a time when prices are already sky high. Inevitably, consumers will have to pay more,” he says.Gareth Belsham, of surveyors Naismiths, says “people who are upgrading, or extending their home, will be directly affected. The biggest changes relate to heating and insulation,” he says. “There are new rules concerning the amount of glazing used in extensions, and any new windows or doors must be highly insulated.”Windows and doors will have to adhere to higher standards, while there are new limits on the amount of glazing you can have to reduce unwanted heat from the sun.Thomas Goodman, of My Job Quote, a site which sources quotes, says this will bring in new restrictions for extensions. “Glazing on windows, doors and roof lights must cover no more than 25% of the floor area to prevent heat loss,” he says.As the rules came into effect last Wednesday, property developers were rushing to file plans just before the deadline, according to Belsham. Any plans submitted before that date are considered to be under the previous rules, and can go ahead as long as work starts before 15 June next year.Builders which have costed projects, but have not filed the paperwork, may need to go back and submit fresh estimates, says Marcus Jefford of Build Aviator, which prices projects.Materials prices are already up 25% in the last two years, according to figures from the Construction Products Association. How much overall prices will increase as a result of the rule changes is not clear. “While admirable in their intentions, they will add to the cost of housebuilding at a time when many already feel that they are priced out of homeownership,” says Jonathan Rolande of the National Association of Property Buyers. “An average extension will probably see around £3,000 additional cost thanks to the new regs.”John Kelly, a construction lawyer at Freeths law firm, believes prices will eventually come down. But not in the immediate future. “As the marketplace adapts to the new requirements, and the technologies that support them, the scaling up of these technologies will eventually bring costs down, but in the short term, we will all have to pay the price of the necessary transition.” he says.However, the long-term effects of the changes will be more comfortable and energy-efficient homes, adds Andrew Mellor. “Homeowners will probably recoup that cost over time in energy bill savings. It will obviously be very volatile at the moment, but they will have that benefit over time.”

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