Each sentence has a mistake. Find it bychosing A B C or D

 She decided remaining  celibate and to devote her life to help the  homeless and orphan

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When you volunteer, it might be one of the best ways to gain hands-on experience for  a future career. And giving a (1) ________________ hand to a community won’t just result in great networking opportunities but the experience can also be a great addition to your skill set and CV. With each new volunteering job comes training with a different (2) ________________ of skills. These skills might seem basic and unhelpful while training but can become a great benefit soon. If you develop new abilities, it’ll help set you (3) _______________ in the job market. It can also make you more productive and successful. Volunteering broadens your experience and exposure to life. And it won’t just help you make a difference in a community, it’ll (4) _________ help you on a personal level. Are you planning on becoming a nurse or doctor? Volunteer at your local hospital. Are you following a career in environmental science? Find a (5)______________________ restoration programme. This is the perfect opportunity to gain essential leadership experience that all employers want to see

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By Celsi’s account, Alison has changed her mind a dozen times. Now she was utterly torn. She wanted to (1)_________ her lifelong dream of climbing to K2, adding it to Everest to become the only British woman (2)______the world’s two highest summits. And she (3) _______wanted to be back with her children, Tom, six and Kate, four. But early in that morning, while having a light English breakfast, Alison reopened that burning question once again, (4)__________endless cups of coffee with Celsi as she turned it over and over in her mind. “It was a very emotional thing for her,” says Celsi. “She really went through a lot of things, filling for divorce, raising the kids all by herself and changing a lot of jobs”. Finally, just 15 minutes before the porter was due to depart, she (5) ______ Celsi she had decided to stay, reasoning that, since she had been away for so long, one more week wouldn’t matter. “She said it was logical to give the weather a chance to clear.”

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The aviation industry, especially the commercial aviation sector, is constantly striving to improve both the way it works and its customer satisfaction. It has begun using artificial intelligence. Though AI in the aviation industry is still in the nascent stage, some progress has been made already as certain leading carriers invest in AI. To make a long story short, AI can redefine how the aviation industry goes about its work. In 2017, American Airlines conducted an app development competition with the goal of having an app developed for making baggage screening easier for passengers. The competition, named HackWars, was themed upon artificial intelligence, drones and augmented and virtual reality. The winner, known as “Team Avatar,” developed an app that would not only allow passengers determine their baggage size before arriving at the airport, but also prepay any potential baggage-related expenses. United Airlines is using Amazon’s Alexa to have certain common customer queries answered. In September 2017, United announced a collaboration with Alexa. The feature is known as the United skill. To get started, all passengers need to do is to  add the United skill to their Alexa app and then start asking questions. Alexa answers common queries correctly, such as the status of a flight by number, check-in requests and availability of Wi-Fi on a flight. The reviews so far have been mixed, which points to the fact that there is a learning curve, and it is still a long way to go before AI can fully handle customer assistance. Tracking progress is an enormous challenge that airlines will face. The first thing they need to do is to develop analytics that will help them develop and process accurate data. However, that in itself is a challenge. What kind of analytics will help? For example, customer satisfaction is going to be one of the most important factors in success. What kind of analytics will determine that airlines have been improving on customer satisfaction parameters? AI needs huge investments, and probably the biggest risk in this is smaller, especially budget airlines are going to miss out on reaping the benefits of AI fully. Does that mean that the performance of the smaller carriers will be impacted? That might not be the case, because we might be moving toward more acquisitions and mergers. Bigger airlines will have a massive appetite for acquiring smaller airlines with an eye on the market. It is not all gloom and doom though, because smaller airlines like Southwest have already shown some initiatives toward embracing AI. It is surprising that a sector as important as aviation has woken up to AI so late. As AI in aviation picks up its pace, there could probably be a few mergers, acquisitions or even closure of small airlines which will not be able to afford the investments. Now, AI seems the best option to take aviation to the next level.
5. According to paragraph 3, Amazon’s Alexa is ______

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“What we’re seeing in Australia, in a completely different environment, are fires that are approaching or even exceeding the magnitude of things that we only saw in the most remote forested regions in the world,” said Ross Bradstock, the director of the Center for Environmental Risk Management of Bushfires at the University of Wollongong in New South Wales. The numbers from Australia dwarf those from some of the most high-profile fires in recent years. The bushfires in southeastern Australia this season have burned about eight times as much land as the 2018 fires in California, which covered nearly two million acres and were the worst in that state’s recorded history.  In Australia’s history, most bad fire seasons have coincided with the warming of an El Niño pattern. But that is not the case this time, showing how much this season stands out and the danger the country faces with more unpredictable weather patterns in the future. “While scientists have long predicted that climate change would bring longer and more intense fire seasons”, Dr. Bradstock said, “Under his projections, Australia would not have seen this kind of devastation for another 40 to 50 years”.  “I guess I’m as shocked as anyone about what’s unfolding and, probably, like everyone else who’s involved and affected, we’ll very quickly recalibrate thinking about what we’re doing,” he said. Recalibrating means expecting these phenomenal fires to continue to occur, particularly as Australia’s drought shows few signs of ending and temperatures are expected to continue to climb after the warmest decade on record.  “We would be extremely foolish, given all the evidence and the magnitude of this event, to just laugh it off as a one-off phenomenon,” Dr. Bradstock said. “I think we have to get ready to deal with a season like this again in the not-too-distant future.” 
5. The word “it” in paragraph 4 refers to _______

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The issue of equality for women in British society first attracted national attention in the early 20th century, when the suffragettes won for women the right to vote. In the 1960s feminism became the subject of intense debate when the women's liberation movement encouraged women to reject their traditional supporting role and to demand the equal right with men in areas such as employment and play. Since then, the gender gap between the sexes has been reduced. The Equal Pay Act of 1970, for instance, made it illegal for woman to be paid less than men for doing the same work, and in 1975 the Sex Discrimination Act aimed to prevent either sex having an unfair advantage when applying forjobs. In the same year the Equal Opportunities Commission was set up to help people claim their rights to equal treatment and to publish research and statistics to show where improvements in opportunities for women need to be made. Women now have much better employment opportunities, though they still tend to get less well-paid jobs than men, and very few are appointed to top jobs in industry. In the US the movement that is often called the"first wave of feminism"began in the 1800s. Susan B. Anthony worked for the right to vote, Margaret Sanger wanted to provide women with the means of contraception so that they could decide whether or not to have children, and Elizabeth Blackwell, who had to fight for the chance to become a doctor, wanted to have greater opportunities to study. Many feminists were interested in other social issues. The second wave of feminism began in 1960s. Women like Betty Friedan and Gloria Steinem became associated with the fight to get equal rights and opportunities for women under law. An important issue was the Equal Rights Amendment (ERA), which was intended to change the Constitution. Although the ERA was not passed, there was progress in other areas. It became illegal for employers, schools, clubs, etc... to discriminate against women. But women still find it hard to advance beyond a certain point in their career, the so-called glass ceiling that prevents them from having high level jobs. Many women also face the problem of the second shift, i.e. the household chores. In the 1980s, feminism became less popular in the US and there was less interest in solving the remaining problems, such as the fact that most women still earn much less than men. Although there is still discrimination, the principle that it should not exist is widely accepted.
8. Which of the following is not mentioned in the passage?

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Vegetables are parts of (1) __________ that are consumed by humans or other animals as food. The original meaning is still commonly used and is applied to plants collectively to refer to all edible plant matter, (2) __________ the flowers, fruits, stems, leaves, roots, and seeds. Originally, vegetables were collected from the wild by huntergatherers and entered cultivation in several parts of the world, probably during the period 10,000 BC to 7,000 BC, when a new agricultural way of life developed. At first, plants which grew locally would have been cultivated, but as time went on, trade brought exotic crops from (3)__________ to add to domestic types. Nowadays, most vegetables are grown all over the world as climate permits. Crops may be cultivated in protected environments in less suitable locations, and global trade in (4) __________ products allows consumers to purchase vegetables grown in faraway countries. The scale of production varies from subsistence farmers supplying the needs of their family for food, to agribusinesses with vast areas of single-product crops. Depending on the type of vegetable concerned, harvesting the crop is followed by grading, storing, processing, and marketing. Vegetables can be eaten (5) __________ raw or cooked and play an important role in human nutrition, being mostly low in fat and carbohydrates, but high in vitamins, minerals and dietary fiber. Many nutritionists encourage people to consume plenty of fruit and vegetables, five or more portions a day often being recommended

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He works as a/ an .................... in his uncle’s workshop.

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Thirty years after ghostwriting Donald Trump’s The Art of the Deal, Tony Schwartz described the experience as like putting lipstick on a pig. He felt a “deep sense of remorse” at helping bring the man who would become president gain wider attention. This week, the writer Natalie Beach joined the grand tradition of ghostwriters speaking out about their subjects, with a deeply intimate essay in the Cut laying out how she used to ghost everything for her former friend and controversial “influencer” Caroline Calloway: from Instagram captions to the aborted book that once attracted a $375,000 (£300,000) publishing deal, until their relationship broke down irretrievably. Beach’s account says that after the pair put the book proposal together, the influencer felt unable to write it. Beach says she “bought us time with the publishers by writing a quarter of the manuscript by myself”. As a ghostwriter himself, Crofts questions the ethics of speaking out about his subjects’ lives. “I do think Tony Schwartz shouldn’t have come out and said anything about Trump, because you’ve taken the money. It’s like a lawyer: if you find that the person you’re representing is a murderer you can’t then go around bewailing the fact you defended them – that was your job,” he said. “But I think he made Trump, I don’t think Trump would be president if he hadn’t written that book for him, because he’d never have got The Apprentice without the book, and the presidency without The Apprentice. So it must be weighing heavily on his conscience.”  Ghostwriters must be good at several things – being amenable to being steered by a subject, while also being firm enough to guide them away from tangents and uninteresting details. But the most important thing in ghostwriting, says Crofts, is absence of ego. “Which is maybe what went wrong [with Calloway] – Natalie isn’t a born ghost, she’s a writer herself. She was really young and well out of her depth, completely swamped by this girl’s flamboyance,” he says. “Ghostwriters do attract a lot of fantasists and people who have ideas way above the likelihood of success. They always think their story is fantastically interesting and going to be a bestseller. You’re always dealing with people with larger-than-life egos, so there’s always a danger you’re going to run up against someone who is impossible to manage.”  
5. According to paragraph 3, what is the view of Crofts for Tony Schwartz’s story?

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Why is it that many teenagers have the energy to play computer games until late at night but can’t find the energy to get out of bed (1) ________ for school? According to a new report, today’s generation of children are in danger of getting so (2)_______ sleep that they are putting their mental and physical health at (3)_______. Adults can easily survive on seven to eight hours’ sleep a night, (4)_______teenagers require nine or ten hours. According to medical experts, one in five youngsters (5)________ anything between two and five hours’ sleep a night less than their parents did at their age.

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Insects’ lives are very short and they have many enemies but they must survive long enough to breed and perpetuate their kind. The less insect-like they look, the better their chance of survival. To look “inedible” by imitating plants is a way frequently used by insects to survive. Mammals rarely imitate plants, but many fish and invertebrates do. The stick caterpillar is well named. It is hardly distinguishable from a brown or green twig. This caterpillar is quite common and can be found almost anywhere in North America. It is also called “measuring worm” or “inchworm”. It walks by arching its body, then stretching out and grasping the branch with its front feet then looping its body again to bring the hind fed forward. When danger threatens, the stick caterpillar stretches its body away from the branch at an angle and remains rigid and still, like a twig, until the danger has passed. Walking sticks, or stick insects, do not have to assume a rigid, twig-like pose to find protection: they look like inedible twigs in any position. There are many kinds of walking sticks, ranging in size from the few inches of the North American variety to some tropical species that may be over a foot long. When at rest their front legs are stretched out, heightening their camouflage. Some of the tropical species are adorned with spines or ridges, imitating the thorny bushes or trees in which they live. Leaves also seem to be a favorite object for insects to imitate. Many butterflies can suddenly disappear from view by folding their wings and sitting quietly among the plants that they resemble 
3. According to the passage, how does the stick caterpillar make itself look like a twig?

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Many prehistoric people subsisted as hunters and gatherers. Undoubtedly, game  animals, including some very large species, provided major components of human diets. An important controversy centering on the question of human effects on prehistoric  wildlife concerns the sudden disappearance of so many species of large animals at or near the end of the Pleistocene epoch. Most paleontologists suspect that abrupt changes in climate led to the mass extinctions. Others, however, have concluded that prehistoric people drove many of those species to extinction through overhunting. In their “Pleistocene overkill hypothesis,” they cite what seems to be a remarkable coincidence between the arrival of prehistoric peoples in North and South America and the time during which mammoths, giant ground sloths, the giant bison, and numerous other large mammals became extinct.  Perhaps the human species was driving others to extinction long before the dawn of history. Hunter-gatherers may have contributed to Pleistocene extinctions in more indirect ways. Besides overhunting, at least three other kinds of effects have been suggested: direct competition, imbalances between competing species of game animals, and early agricultural practices. Direct competition may have brought about the demise of large carnivores such as the saber-toothed cats. These animals simply may have been unable to compete with the increasingly sophisticated hunting skills of Pleistocene people.  Human hunters could have caused imbalances among game animals, leading to the extinctions of species less able to compete. When other predators such as the gray wolf prey upon large mammals, they generally take high proportions of each year’s crop of young. Some human hunters, in contrast, tend to take the various age-groups of large animals in proportion to their actual occurrence. If such hunters first competed with the larger predators and then replaced them, they may have allowed younger to survive each year, gradually increasing the populations of favored species. As these populations expanded, they in turn may have competed with other game species for the same environmental niche, forcing the less hunted species into extinction. This theory, suggests that human hunters played an indirect role in Pleistocene extinctions by hunting one species more than another. 
6. The highlighted word “they” in the passage refers to ___________

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Hundreds of years ago, life was harder than it is today. People didn’t have modern machines. Yet life today has brought new problems. One of the biggest is pollution. Water pollution has made our rivers and lakes dirty. It kills our fish and pollutes our drinking water. Noise pollution makes us talk (1)______ and become angry more easily. Air pollution is the most serious kind of pollution to all living things in the world. Cars, planes and factories all pollute our air every day. Sometimes the polluted air is (2)________thick that it is like a quilt over a city. This kind of quilt is called smog. Many countries are making rules to fight pollution. Factories must now (3)______ their water before it is thrown away, and they mustn’t let dirty smoke go into the air. We need to do many other things. We (4)_______ put waste things in the dustbin and do not throw them on the ground. We can go to work by bus with our friends in the (5)________car. If there are fewer people driving, there will be less pollution. Rules are not enough. Every person must help to fight pollution

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What do you think _________ to the park if more chemicals are released into the water?

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Last week, China declared “mission accomplished” after landing a spacecraft, Chang’e-4, on the far side of the Moon. It was a remarkable endeavour. As the far side of the Moon never faces the Earth, mission control cannot communicate directly with the spacecraft, but only via an orbiting satellite. The terrain is more broken and cratered than the near side, so landing a craft is that much more difficult. Even Nasa was impressed: “a first for humanity and an impressive accomplishment!”. Yet mixed with admiration was trepidation. China, a latecomer to the space race, is now beginning to threaten the supremacy of America and Russia. But then Russia and America have long played their space exploration programmes for propaganda purposes. From the beginning, the space race was intimately bound up with the needs of the cold war. In 1957, the Soviet Union launched Sputnik, the first human craft to orbit the Earth. Four years later, Yuri Gagarin became the first man in space. Eight years later, on 21 July 1969, Neil Armstrong and Buzz Aldrin became the first humans to tread on the Moon. Their journey may have been fuelled in part by cold war desperation, but it was also an extraordinary triumph of knowledge and will, an act of the technological sublime. Once America was satisfied that the Soviet Union had been put in its place, space exploration became politically less important. As America downgraded its space ambitions, Chinese aspirations took flight. In 1992, the Chinese government approved the Shenzhou manned spaceflight programme. Eleven years later, Yang Liwei became the first Chinese astronaut in space. Fears about Chinese ambitions have been heightened by the changing context of the space race. During the cold war, America feared the Soviet Union, but was determined to thwart Moscow’s aims. Today, American apprehension stems from the worry that China’s emergence as the dominant global force cannot be checked, nor Beijing’s brutal despotism challenged. As liberal democracy frays in the west and authoritarian capitalism becomes entrenched in the east, self-doubt shapes US attitudes to China. Space exploration has long been fuelled by a mixture of humanistic dreams, technological leaps and tawdry politics. The Chang’e-4 mission is no different. How the space race will play out over the next decade, and what role China will adopt in global politics, remains uncertain. In the meantime, let us celebrate our new perspective of the dark side of the Moon.
7. The following sentences are true, EXCEPT _______

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Language preservation is the effort to prevent languages from becoming unknown. A language is at (1)______ of being lost when it no longer is taught to younger generations, while fluent speakers of the language (usually the elderly) die. Language is an important part of any society, because it enables people to communicate and express themselves. When a language dies (2)_______, future generations lose a vital part of the culture that is necessary to completely understand it. This makes language a vulnerable aspect of cultural heritage, and it becomes especially important to (3) __________ it. According to the United Nations Educational, Scientific, and Cultural Organization (UNESCO), from facts published in their “Atlas of Languages in Danger of Disappearing,” there are an estimated 6,000 languages spoken worldwide today, and half of the world’s population speaks the eight most common. More than 3,000 languages are reportedly spoken by fewer than 10,000 people each. Ethnologue, a reference work published by SIL International, has cataloged the world’s known (4)_______ languages, and it estimates that 417 languages are on the verge of extinction. There are different factors that can (5)________ a language in danger of becoming extinct. One is when a language is no longer being taught to the children of the community, or at least to a large number of the children. In these cases, the remaining fluent speakers of the language are generally the older members of the community, and when they pass away, the language dies out with them

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All families face challenges and hurdles as a normal part of life and getting through these times requires respectful communication and care for each other. However, some families face significant (1) _______ like not having a place to live, a parent going to court, a parent having a long-term illness, or parents having to work (2) ________ from home or for long hours.  Some families seem to fight and argue a lot, which can be really scary and stressful. Sometimes, family relationships can be so stressful that you feel unsafe and scared. These types of things make relationships (3) _________ and negative and it can make it difficult to feel like talking things through.  As a teenager you are going through a lot of changes within yourself physically, mentally, emotionally and socially. Often these changes (4) _________ at different rates and at different times. It is important for you to be aware of what is going on and how this may affect you at school, home and/or around family and friends having an understanding of adolescent development can be very (5) _____

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The “balance of nature” is not an empty phrase. Nature provides a population to  occupy a suitable environment and cuts down surplus on population to fit the available food supply. One means of reducing surplus population is predators; others are parasites and diseases. Also, population density produces nervous disorders and even drivers animals to mass migrations, like the lemmings of Norway who plunge into the sea.  That predator populations increase to control other animals has long been known. Many years ago, the Hudsons Bay Company records revealed that the fox population went up and down about a year after the rabbit population had gone up and down.  Sometimes a situation occurs in which the predator population is reduced to a level below that which nature can readily replace. On Valcour Island in Lake Champlain (New York), a costly campaign resulted in the elimination of predatory animals only to have birds and small animals (including grouse and hares, popular game) increase for four years afterward. Then, lacking predator control, nature resorted to disease to cut down on these populations.  Jamaica had an example of natures persistence in providing animals for existing habits. Sugar planters, about 75 years ago, imported mongooses to control rats. The mongooses killed off the rats and, with plentiful food, multiplied. Rats became scarce and the mongooses ate lambs, puppies, and wildlife. Eventually, food became scarce and the mongooses’ population declined.
1. The phrase "balance of nature” in the first paragraph means ____

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The human desire for companionship may feel boundless, but research suggests that  our social capital is finite. Social scientists have used a number of ingenious approaches to gauge the size of people’s social networks; these have returned estimates ranging from about 250 to about 5,500 people. An undergraduate thesis from MIT focusing exclusively on Franklin D. Roosevelt, a friendly guy with an especially social job, suggested that he might have had as many as 22,500 acquaintances. Looking more specifically at friendship, a study using the exchange of Christmas cards as a proxy for closeness put the average person’s friend group at about 121 people.  However vast our networks may be, our inner circle tends to be much smaller. The average American trusts only 10 to 20 people. Moreover, that number may be shrinking: From 1985 to 2004, the average number of confidants that people reported having decreased from three to two. This is both sad and consequential, because whoever has strong social relationships tends to live longer than those who don’t. So what should you do if your social life is lacking? Just follow the research. To begin with, don’t dismiss the humble acquaintance. Even interacting with people with whom one has weak social ties has a meaningful influence on well-being. Beyond that, building deeper friendships may be largely a matter of putting in time. A recent study out of the University of Kansas found that it takes about 50 hours of socializing to go from acquaintance to casual friend, an additional 40 hours to become a “real” friend, and a total of 200 hours to become a close friend. If that sounds like too much effort, reviving dormant social ties can be especially rewarding. Reconnected friends can quickly recapture much of the trust they previously built, while offering each other a dash of novelty drawn from whatever they’ve been up to in the meantime. And if all else fails, you could start randomly confiding in people you don’t know that well in hopes of letting the tail wag the relational dog. The academic literature is clear: Longing for closeness and connection is pervasive. Which suggests that most of us are stumbling through the world pining for companionship that could be easily provided by the lonesome stumblers all around us.
6. The word “dormant” in paragraph 4 is closest in meaning to _______

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Social networking sites such as Facebook and MySpace do not help you make more  genuine close friends, according to a survey by researchers who studied how the websites are changing the nature of friendship networks. Although social networking on the internet helps people to collect hundreds or even thousands of acquaintances, the researchers believe that face to face contact is nearly always necessary to form truly close friendships.  “Although the numbers of friends people have on these sites can be massive, the actual number of close friends is approximately the same in the face to face real world,” said psychologist Will Reader, from Sheffield Hallam University. Social networking websites such as Facebook, Bebo and MySpace have taken off rapidly in recent years. Facebook was launched initially in 2004 for Harvard University members but has since expanded to more than 34 million users worldwide. MySpace, which was set up in 2003, has more than 200 million users and was bought by Rupert Murdoch’s News Corporation in 2005 for $580m (£285m). Previous research has suggested that a person’s conventional friendship group consists of around 150 people, with five very close friends but larger numbers of people whom we keep in touch with less regularly. This figure is so consistent that scientists have suggested it is determined by the cognitive constraints of keeping up with large numbers of people. But Dr. Reader and his team have found that social networking sites do allow people to stretch this figure. The team asked more than 200 people to fill in questionnaires about their online networking, asking for example how many online friends they had, how many of these were close friends and how many they had met face to face. The team found that although the sites allowed contact with hundreds of acquaintances, as with conventional friendship networks, people tend to have around five close friends. Ninety per cent of contacts whom the subjects regarded as close friends were people they had met face to face. “People see face to face contact as being absolutely imperative in forming close friendships,” added Dr. Reader. He told the British Association Festival of Science in York that social networking sites allow people to broaden their list of nodding acquaintances because staying in touch online is easy. “What social network sites can do is decrease the cost of maintaining and forming these social networks because we can post information to multiple people,” he said.  But to develop a real friendship we need to see that the other person is trustworthy, said Dr. Reader. "What we need is to be absolutely sure that a person is really going to invest in us, is really going to be there for us when we need them … It’s very easy to be deceptive on the internet."
2. The following are true about online friendship, EXCEPT ________

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Alfred Bernhard Nobel, a Swedish inventor and philanthropist, left most of his vast fortune in trust as a fund from which annual prize could be awarded to individuals and organizations that had achieved the greatest benefit to humanity in a particular year. Originally, there were six classifications for outstanding contributions designated in Nobel’s will including chemistry, physics or medicine, literature, and international peace.
The prizes are administered by the Nobel Foundation in Stockholm. In 1969, a prize for economics endowed by the Central Bank of Sweden was added. Candidates for the prizes must be nominated in writing by a qualified authority in the field of competition Recipients in physics, chemistry, and economics are selected by the Royal Swedish Academy of Sciences; in physiology or medicine by  the Caroline Institute; in literature by the Swedish Academy; and in peace by the Norwegian Nobel committee appointed by Norway’s parliament. The prizes are usually presented in Stockholm on December 10, with the King of Sweden officiating, an appropriate tribute to Alfred Nobel on the anniversary of his death. Each one includes a gold medal, a diploma, and a cash award of about one million dollars.

A Nobel prize would NOT be given to     .