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

 Modern airplanes are able to fly very highly because they have pressurized cabins

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Thunderstorms, with their jagged bursts of lightning and roaring thunder, are actually one of nature’s primary mechanisms for transferring heat from the surface of the earth into the atmosphere. A thunderstorm starts when low-lying pockets of warm air from the surface of the earth begin to rise. The pockets of warm air float upward through the air above that is both cooler and heavier. The rising pockets cool as their pressure decreases, and their latent heat is released above the condensation line through the formation of cumulus clouds. What will happen with these clouds depends on the temperature of the atmosphere. In winter, the air temperature differential between higher and lower altitudes is not extremely great, and the temperature of the rising air mass drops more slowly. During these colder months, the atmosphere, therefore, tends to remain rather stable. In summer, however, when there is a high accumulation of heat near the earth’s surface, in direct contrast to the considerably colder air higher up, the temperature differential between higher and lower altitudes is much more pronounced. As warm air rises in this type of environment, the temperature drops much more rapidly than it does in winter; when the temperature drops more than 4 degrees Fahrenheit per thousand feet of altitude, cumulus clouds aggregate into a single massive cumulonimbus cloud, or thunderhead. In isolation, a single thunderstorm is an impressive but fairly benign way for Mother Earth to defuse trapped heat from her surface; thunderstorms, however, can appear in concert, and the resulting show, while extremely impressive, can also prove extraordinarily destructive. When there is a large-scale collision between cold air and warm air masses during the summer months, a squall line, or series of thunderheads, may develop. It is common for a squall line to begin when an advancing cold front meets up with and forces itself under a layer of warm and moist air, creating a line of thunderstorms that races forward at speeds of approximately forty miles per hour. A squall line, which can be hundreds of miles long and can contain fifty distinct thunderheads, is a magnificent force of nature with incredible potential for destruction. Within the squall line, often near its southern end, can be found supercells, long-lived rotating storms of exceptional strength that serve as the source of tornadoes.
2. The word “mechanisms” in paragraph 1 is most likely ________

Biofuels and the Environment

Leading investors have joined the growing chorus of concern about governments and companies rushing into producing biofuels as a solution for global warming, saying that many involved in the sector could be jeopardizing future profits if they do not consider the long-term impact of what they are doing carefully.

It is essential to build sustainability criteria into the supply chain of any green fuel project in order to ensure that there is no adverse effect on the surrounding environment and social structures. The report produced by the investors expresses concern that many companies may not be fully aware of the potential pitfalls in the biofuel sector.

Production of corn and soya beans has increased dramatically in the last years as an eco-friendly alternative to fossil fuels but environmental and human rights campaigners are worried that this will lead to destruction of rain forests. Food prices could also go up as there is increased competition for crops as both foodstuffs and sources of fuel. Last week, the UN warned that biofuels could have dangerous side effects and said that steps need to be taken to make sure that land converted to grow biofuels does not damage the environment or cause civil unrest. There is already great concern about palm oil, which is used in many foods in addition to being an important biofuel, as rain forests are being cleared in some countries and people driven from their homes to create palm oil plantations.

An analyst and author of the investors' report say that biofuels are not a cure for climate change but they can play their part as long as governments and companies manage the social and environmental impacts thoroughly. There should also be greater measures taken to increase efficiency and to reduce demand.

Biofuel producers ____ know about the possible problems.

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October brings attention to breast cancer, by raising awareness of treatment, research  and prevention. One local company is going a step above the rest, by offering a free home cleaning to a patient undergoing treatment. Cleaning for a Reason is an international organization that provides home cleanings for family members battling cancer.  “I am a breast cancer survivor myself, I was diagnosed in 2011. And so when I found out about this in 2014, after going through my experience of being extremely tired and just no energy at all to perform day to day tasks, that I realized this would be something that would greatly benefit the women in our community,” said Marlo Kanipe, owner of Deserved Comfort House Cleaning. The company partners with Cleaning for a Reason to provide the service locally.  Columbia native Lenora Floyd was diagnosed with breast cancer in 2018, and learned about Cleaning for a Reason from a flyer. “I was sitting at the table and I thought ‘that’s really something that would be such a huge help!’ Because I do most of the cleaning around the house, and I didn’t really know what to expect,” said Floyd. Floyd said having a clean home lifted a burden while she was going through a tough time. “It was just really nice to have that service, and one less thing not to have to worry about. Be able to rest instead of thinking ‘oh, I really need to vacuum up,’” said Floyd. “The chemotherapy and radiation really just takes a toll on your body. When someone is going through those times, the last thing you want to do is to have to do physical work. And house cleaning, of course, is physical work,” said Kanipe. “It’s nice to be able to take one small thing off of their plate. That they don’t have to worry about cleaning or keeping their house clean,” said Nicka Evans, a certified cleaning technician with Deserved Comfort. “This is what I do for work, it doesn’t seem like it’s a big deal. But to be able to come into someone’s house and see that it is a big deal and it’s important to them, it really means a lot to me.”  Since partnering with Cleaning for a Reason in 2014, Deserved Comfort has donated about $15,000 worth of cleanings. They will continue to help and be there for people as they battle cancer.
4. According to paragraph 4, what is the motive behind the organization’s work?

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Some experts fear that many people are becoming overweight. Adults are encouraged to exercise for a minimum of thirty minutes, five times a week, and the average person is (1) ____ to take 10,000 steps per day to maintain basic fitness, but it is a fact that few office workers manage to take more than 5,000.  Now architects have designed ‘fit’ office buildings which encourage employees to become healthier because they have to walk while they are at work. In these buildings, meeting rooms and car parks are placed a long way from office desks so that workers have to walk to (2) ____ them. In one building the cafe is located in the furthest section so that some workers have to walk as (3) ____ as half a kilometer to and from lunch. There is special emphasis on (4) ____ people to use stairs instead of lifts, and long staircases are broken into flights of no more than nine stairs, so that they don’t look so difficult to climb. There are also large windows which provide attractive views over the city. (9) ____, the lifts are not easy to get access to, and in some buildings, they only stop at one floor in three.  It’s a design policy for a fitter environment which encourages people to walk without making it appear to be hard work - but will it be successful? Only time will tell

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The original Olympics were always held in Olympia, Greece but now, each modern Olympiad is held in or near a different city of the world. The earlier games were open only to Greek citizens and athletes from Mediterranean countries. The modern games (1)________all nations to compete. Another big difference is that events for women have become a major part of the modern games. And female winners receive the same (2)________as the men who win In the ancient games, there were honors for cultural achievements. Modern competition is almost entirely athletic. Many of the contests held in modern Olympics were (3)________in early times. These include bicycle, canoe and yacht racing; soccer, basketball; judo, rifle shooting and swimming. One of the most popular events of the modern Olympic is the marathon. This very tiring 26-mile foot race over an open course is the supreme test of the runners’ (4)_______. The marathon was not part of the ancient Olympics although it originates in Greece. And finally, a more recent development in the Olympics are the winter games, (5)_______were started in 1924. They are held separately from the summer games but in the same year

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The era of “smart cities”, controlled by an ecosystem of sensors, cameras and  algorithms, is fast approaching. In China, state media claim 500 are under construction. In Canada, Alphabet has plans for turning parts of Toronto into a timber-framed tech town as a prototype. Incremental steps are also making cities smarter. Last week, Transport for London announced plans to track Tube passengers through WiFi to monitor congestion. In the US, fast-food drive-throughs will trial number plates scanners to make ordering faster. Individually these services can improve daily life. Integrating them will create something more powerful than the sum of its parts.  Though convenience and safety are the end goals, serious questions about how city authorities will both store and share vast bodies of data must be answered. The fact that surveillance is built into key transport infrastructure will also make it increasingly difficult to avoid without disrupting daily life. The smart city risks creating a panopticon in the name of an easier and better life. The risks of anonymity disappearing will be increased by the use of different data sets, making it more likely that identifiable characteristics may appear. Closely linked to this is the question of data storage and sharing. The treasure trove of personal information will be a tempting target for hackers. This information might also be used by law enforcement, feeding into the existing dangers of mass surveillance and profiling, as is already the case in China.  These concerns have long been levelled at social media and internet-enabled home appliances. Smart city surveillance can be even more insidious. Users can avoid Facebook or hardware such as Alexa. Avoiding basic infrastructure will be near impossible without seriously affecting day-to-day life. TfL has put up signs warning customers of the WiFi tracking, yet the only choice is between tracking and having no signal. Reports on the facial recognition at airports in America suggest that avoiding being automatically scanned will be tough as well. As these systems become more closely enmeshed, avoiding snooping will become increasingly tricky.  The inevitable rise of smart cities is not inherently negative. Harnessing the power of technology and data can potentially help urban environments adapt to challenges such as climate change and overcrowding. Politicians, programmers and academics must work to ensure that does not come at the cost of all-seeing, 24-hour surveillance. 
3. The word “them” in paragraph 1 refers to _____

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We’ve just come back exhausted after a two-week holiday in France. We were really stupid. On the last day we drove non-stop from Marseille to Calais- we should have (34)_____ our journey in Lyon or Paris. As if that wasn’t enough, the sea was so rough in the English Channel that the (35) _____ took three hours instead of one and a half. Next year we’ve decided we’re going on a cheap (36) _____ holiday to Italy. It sounds marvellous- the cost of the flight, the hotel and all our meals are (37) _____ in the price. While we’re in Rome we’ll be going on a guided tour of the Coliseum. The last time I was in Italy, I was on a business trip – I can’t say I saw many of the famous tourist (38) _____ on that occasion

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The relationship between Britain and the US has always been a close one. Like all close relationship it has had difficult times. The US was first a British colony, but between 1775 and 1783 the US fought a war to become independent. The US fought the British again in the War of 1812. In general, however, the two countries have felt closer to each other than to any other country, and their foreign policies have shown this. During World War I and World War II, Britain and the US supported each other. When the US looks for foreign support, Britain is usually the first country to come forward and it is sometimes called “the 51st state of union”. But the special relationship that developed after 1945 is not explained only by shared political interests. An important reason for the friendship is that the people of the two countries are very similar. They share the same language and enjoy each other’s literature, films and television. Many Americans have British ancestors, or relatives still living in Britain. The US government and political system is based on Britain’s, and there are many Anglo-American businesses operating on both sides of the Atlantic. In Britain some people are worried about the extent of US influence, and there is some jealousy of its current power. The special relationship was strong in the early 1980s when Margaret Thatcher was Prime Minister in Britain and Ronald Reagan was President of the US.  
5. Britain and the US are close to each other NOT because of their ______

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From their inception, most rural neighborhoods in colonial North America included at least one carpenter, joiner, sawyer, and cooper in woodworking; a weaver and a tailor for clothing production; a tanner, currier, and cordwainer (shoemaker) for fabricating leather objects; and a blacksmith for metalwork. Where stone was the local building material, a mason was sure to appear on the list of people who paid taxes. With only an apprentice as an assistant, the rural artisan provided the neighborhood with common goods from furniture to shoes to farm equipment in exchange for cash or for “goods in kind” from the customer’s field, pasture, or dairy. Sometimes artisans transformed material provided by the customer wove cloth of yam spun at the farm from the wool of the family sheep; made chairs or tables from wood cut in the customer’s own woodlot; produced shoes or leather breeches from cow, deer, or sheepskin tanned on the farm.  Like their farming neighbors, rural artisans were part of an economy seen, by one historian, as “an orchestra conducted by nature.” Some tasks could not be done in the winter, others had to be put off during harvest time, and still others waited on raw materials that were only produced seasonally. As the days grew shorter, shop hours kept pace, since few artisans could afford enough artificial light to continue work when the sun went down.  To the best of their ability, colonial artisans tried to keep their shops as efficient as possible and to regularize their schedules and methods of production for the best return on their investment in time, tools, and materials. While it is pleasant to imagine a woodworker, for example, carefully matching lumber, joining a chest together without resort to nails or glue, and applying all thought and energy to carving beautiful designs on the finished piece, the time required was not justified unless the customer was willing to pay extra for the quality - and few in rural areas were. Artisans, therefore, often found it necessary to employ as many shortcuts and economics as possible while still producing satisfactory products.
6. Why did colonial artisans want to "regularize their schedules"?

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Men have always played critical roles in the women’s movement. But there is still a long way to go because despite all the progress made, men still dominate positions of power. And, as a string of recent harassment scandals has shown, the behaviour of some men has had profound effects on women’s careers, their success and their lives. The good news, as we mark International Women’s Day, is that many men are acknowledging the importance of playing their part to make gender equality a reality. A new study by Ipsos Mori has found that while a third of British men think they are being expected to do too much to support women’s equality, far more – half – do not. In fact, three in five men in Britain agree that gender equality won’t be achieved unless they also take action to support women’s rights. Despite attempts in some quarters to paint gender equality as a zero-sum game, there are plenty of win-win propositions for these men to advocate. Better parental leave for fathers would be a good start. Government policy needs to catch up with this new reality, and the evidence is clear that, unless paternity leave is non-transferable and well paid, uptake will be low. Sweden and Norway show us that the introduction of the “daddy quota” – the period of parental leave reserved specifically for fathers – has a positive effect on male take-up of parental leave, and then on men’s long-term involvement in household work and childcare. This reaps economic dividends, as women’s talents are no longer lost to the labour force, and having an involved father has a positive effect on children’s wellbeing. Globally, three-quarters (72%) agree that employers should make it easier for men to combine childcare with work. Businesses need not fear: research links flexible working to increased productivity, as better work-life balance leads to happier, more effective workers. Women gain from having flexible partners, too. A study of German couples found that having a partner who works flexibly boosted the wages of men and women, with the effect most pronounced for mothers. Conversely, women whose partners work very long hours are significantly more likely to quit the labour force – taking their talent and experience with them
8. What does the writer want to imply?

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Mr O’Connor, a volunteer firefighter with the New South Wales Rural Fire Service (RFS), has used all seven weeks of his holiday leave, plus his three weeks of allotted sick leave, to fight fires across the state. Mr O’Connor is among the more than 72,000 members of the RFS, a volunteer force that is the largest firefighting service in the world. These volunteer services have been at the front line of the battle against ferocious bush fires across Australia that have already destroyed more than 10.7 million hectares, an area larger than South Korea. The RFS, which began 120 years ago, not only attends to bush fires and home and building fires but also assists in storms, search and rescue operations and car accidents. In 2018, it attended 26,903 incidents, including 10,036 bush fires and 1,283 building fires. Mr Mick Holton, president of the NSW Volunteer Fire Fighters Association, an organisation which represents volunteers, said people step up for various reasons, including altruism, social factors, a sense of adventure, or a desire to protect their own farms or houses. “People are happy to be part of a group that benefits the community. That is a large part of it for most volunteers. People have a sense that they want to help,” he told The Straits Times. But Australia’s bush fires are becoming more severe and more frequent. This year, many, like Mr O’Connor, have made large sacrifices to protect people and homes. Controversially, Prime Minister Scott Morrison agreed in late December to compensate some of the firefighters after coming under heavy pressure to provide them with support. The compensation scheme allows volunteers who are self-employed or work for small businesses to claim A$300 (S$277) per day if they have served more than 10 days this fire season. The maximum payment is A$6,000. But the move had been opposed by some senior firefighters, including the RFS Commissioner, Mr Shane Fitzsimmons, who has said that “For goodness sake, let’s not take away from the extraordinary spirit that is volunteerism.” But Mr Morrison insisted that: “While I know RFS volunteers don’t seek payment for their service, I don’t want to see volunteers or their families unable to pay bills or struggle financially as a result of the selfless contribution they are making.
5. According to paragraph 3, what is the thinking of the Prime Minister of Australia?

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Love stories often include people finding partners who seem to have traits that they lack, like a good girl falling for a bad boy. In this way, they appear to complement one another. For example, one spouse might be outgoing and funny while the other is shy and serious. It’s easy to see how both partners could view the other as ideal – one partner’s strengths balancing out the other partner’s weaknesses. The question is whether people actually seek out complementary partners or if that just happens in the movies.. There is essentially no research evidence that differences in personality, interests, education, politics, upbringing, religion or other traits lead to greater attraction. For example, in one study researchers found that college students preferred descriptions of mates whose written bios were similar to themselves or their ideal self over those described as complementing themselves. Despite the overwhelming evidence, why does the myth of heterogamy endure? There’s evidence that small differences between spouses can become larger over time. In their self-help book “Reconcilable Differences,” psychologists Andrew Christensen, Brian Doss and Neil Jacobson describe how partners move into roles that are complementary over time. For example, if one member of a couple is slightly more humorous than the other, the couple may settle into a pattern in which the slightly-more-funny spouse claims the role of “the funny one” while the slightly-less-funny spouse slots into the role of “the serious one.” In the end, people’s attraction to differences is vastly outweighed by our attraction to similarities. People persist in thinking opposites attract – when in reality, relatively similar partners just become a bit more complementary as time goes by  
1. Which best serves as the title for the passage?

Rewrite the sentence:
It is earth's gravity that gives people their weight.

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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.
1. What is author’s main idea in the passage?

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A question I was asked about the readiness for independence (or lack thereof) during the last stage of adolescence (ages 18 - 23) was this: “How can parents teach independence?” From what I’ve seen, there are at least four components to this training: responsibility, accountability, work, and self-help. And this instruction can start as soon as (1) ____ begins, (usually between ages 9 and 13) if not before. Young people who learn independence can often say: “I (2) ____ my freedom by acting responsibly (I did what was right even when it was hard to do),” “I was held (3) ____ for my bad choices and paid for my mistakes (I faced my consequences),” “I worked to get a lot of what I wanted (it wasn’t all handed to me),” “I developed the resourcefulness to help myself (4) ____ with difficulty (I met my problems head on).” Young people who seem to get stuck in their dependent ways often have parents who, with the most loving motivation, undermine the growth of independence. They give freedom without demanding evidence of responsibility. “If you really want to do it, that’s enough for us to say okay.” They rescue from or ignore bad choices without (5) ____ on accountability. “You didn’t know any better so we’ll overlook what you did.” They provide whatever is wanted without having the child work for any of it. “We’ll just get it for you.” They weaken with so much help when difficulties arise that the capacity for self-help is disabled. “We’ll fix what you did and take care of it.

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Jupiter is the largest and most massive planet and is fifth in order of distance from the sun. It is well placed for observation for several months in every year and on average is the brightest of the planets apart from Venus, though for relatively brief periods Mars may outshine it. Jupiter’s less than 10 hour rotation period gives it the shortest day in the solar system in so far as the principal planets are concerned. There are no true seasons on Jupiter because the axial inclination to the perpendicular of the orbital plane is only just over 3°-less than that for any other planet. The most famous mark on Jupiter is the Great Red Spot. It has shown variations in both intensity and color, and at times it has been invisible, but it always returns after a few years. At its greatest extent it may be 40,000 kilometers long and 14,000 kilometers wide, so its surface area is greater than that of Earth. Though the latitude of the Red Spot varies little, it drifts about in longitude. Over the past century the total longitudinal drift has amounted to approximately 1200°. The latitude is generally very close to – 22°. It was once thought that the Red Spot might be a solid or semisolid body floating in Jupiter’s outer gas. However, the Pioneer and Voyager results have refuted that idea and proven the Red Spot to be a phenomenon of Jovian meteorology. Its longevity may well due to its exceptional size, but there are signs that it is decreasing in size, and it may not be permanent. Several smaller red spots have been seen occasionally but have not lasted.
3. According to the passage, the Great Red Spot________

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With exams approaching, you should be thinking about how to get better at time management and organize your days so you can strike the right balance between home, work and university life. You should also try and eat some brain food - and no, we don’t mean crisps and energy drinks! By taking the time to arrange your priorities, you can give yourself the best chance of staying on track and being organized during the exam period, which in turn can help reduce stress levels, something that can be the difference between success and failure at university. Take a look at our top time management tips, so that you can do your best at university and also find moments to relax and even earn some money on the side. First and foremost, allow time for planning to avoid repetition. Taking the time to research, plan and think about your work is crucial for good time management. Allow yourself the time to process new information and plan how you are going to use it, as this can help you to avoid having to re-read and repeat any research. One way of effectively planning before researching is to make a list of everything you want to find out, so that you can make notes below each subheading as you go Secondly, avoid procrastination and distraction. One way to avoid procrastination is to think about the different places you have been when studying - where were you the most focused? Where were you most distracted? Is there anything you can do to make studying actually somewhat enjoyable? Remember, what works for one person might not necessarily work for you. For some, studying with friends can limit their productivity. But for others, studying in groups can help to increase motivation and avoid procrastination. Next, exercise to clear your head in between study sessions. Believe it or not, exercise works in the same way sleep does. It can focus your state of mind, helping you to clear your head and boost your brain power in between study sessions. If you’re new to exercise, aim to fit in a 10-minute run here and there, steadily increasing the amount you do as you go on. Finally, ask yourself the question, “Has your organization been effective?” Constantly reviewing and reassessing your schedule can help you to recognize whether you need to make any changes in order to help you complete any university tasks and also have time to relax and spend time with friends and family.  
4. According to the passage, part of time management process is ____

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When you first arrive in a foreign culture, often your first reaction is completely positive. Everything seems exciting, different and fascinating. It’s an (1) ______. If you are just on a short holiday, you will probably never leave this phase. (2) ______, if you stay longer, your attitude can start to change. As you start to realize (3) ______ little you really understand the new culture, life can get frustrating. People misunderstand what you are trying to say, or they may laugh at you when you say something incorrectly. Even simple things, like posting a letter, can seem very difficult to you. Thus, you are likely to get angry or upset when things go wrong. With time, though, you start to (4) ______ to become more comfortable with the differences and better able to handle frustrating situations. Your (5) ______ of humor reappears. Finally, you may feel enthusiastic about the culture once again, enjoy living in it, and even prefer certain aspects of the culture to your own.

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Because the low latitudes of the Earth, the areas near the equator, receive more heat than the latitudes near the poles, and because the nature of heat is to expand and move, heat is transported from the tropics to the middle and high latitudes. Some of this heat is moved by winds and some by ocean currents, and some gets stored in the atmosphere in the form of latent heat. The term “latent heat” refers to the energy that has to be used to convert liquid water to water vapor. We know that if we warm a pan of water on a stove, it will evaporate, or turn into vapor, faster than if it is allowed to sit at room temperature. We also know that if we hang wet clothes outside in the summertime they will dry faster than in winter, when temperatures are colder. The energy used in both cases to change liquid water to water vapor is supplied by heat – supplied by the stove in the first case and by the Sun in the latter case. This energy is not lost. It is stored in water vapor in the atmosphere as latent heat. Eventually, the water stored as vapor in the atmosphere will condense to liquid again, and the energy will be released to the atmosphere. In the atmosphere, a large portion of the Sun’s incoming energy is used to evaporate water, primarily in the tropical oceans. Scientists have tried to quantify this proportion of the Sun’s energy. By analyzing temperature, water vapor, and wind data around the globe, they have estimated the quantity to be about 90 watts per square meter, or nearly 30 percent of the Sun’s energy. Once this latent heat is stored within the atmosphere, it can be transported, primarily to higher latitudes, by prevailing, large-scale winds. Or it can be transported vertically to higher levels in the atmosphere, where it forms clouds and subsequent storms, which then release the energy back to the atmosphere
8. All of the following words (in the first paragraph) are defined in the passage EXCEPT _____

Each sentence has a mistake. Findit by chosing A B C or D

A smile can be observed, described, and reliably indentify; it can also be elicited and manipulated under experimental conditions