Choose the best answer:
The cake tastes ____.

 

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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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The Sahara Desert is the world’s largest hot desert. The Sahara is in North Africa and is as large as the United States. Many people think that an area like this has no animals or plant life, but they are (1) __________. In fact, the Sahara Desert has many different ‘ecoregions’. Each ecoregion has different plants and animals (2)_________there. The biggest ecoregion is called the ‘Sahara Desert ecoregion.’ In this area, the climate is extremely dry and extremely hot. The landscape is sandy and dusty with many high dunes. Because the Sahara Desert ecoregion is so hot and dry, there are very few plants and animals. Scientists estimate that there are only 500 species of plants. This is not very much when thinking of (3)_________ enormous the region is. These plants include acacia trees, palms, spiny shrubs, and grasses. The Sahara is also home to 70 species of mammals. Twenty of these are large mammals. There are about 90 species of birds and around 100 reptiles. The biggest threat to plants and animals in this environment is drying (4)_______. Because of this, plants have the ability to recover their health after their leaves have dried out completely. Animals can lose 30-60% of their body mass and still survive. Most animals do not get their water from drinking like other ecosystems. Instead, they have adapted to get their water through metabolic processes. This is why they can survive in a place (5)______ the Sahara Desert ecosystem

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As places transformed, so did the people. When researchers at Yale University and the University of Westminster studied what images people associated with climate change, they found a shift this decade. When they began their study in 2003, the majority of people surveyed thought of melting polar ice. By 2016, more and more people had weather top of mind. Climate, to be clear, is not weather. It’s the difference between a trend and a one-off event. But with wetter storms and hotter summers unfolding over the course of the decade, people were making new connections between climate change and the weather. Seeing climate change through the lens of something they experience every day opens the door for people to see the weight of the issue over their own lives. “Americans are just beginning to connect the dots and to say, wait a second, what’s going on here,” says Anthony Leiserowitz, a lead author of the study and director of the Yale Program on Climate Change Communication. “There’s been this increasing dawning of awareness among many Americans that climate change is actually starting to harm people here and now.” New renewable energy projects outpaced new fossil fuel installations in worldwide growth for the first time in 2015. In a pivotal moment for the whole planet, every country on Earth agreed to take on climate change when they adopted the Paris climate accord in 2015. That committed countries to reducing their greenhouse gas emissions enough to keep the Earth from warming beyond roughly 1.5 degrees Celsius above pre-industrial levels, a threshold that could be catastrophic for people and ecosystems if it’s crossed. It was the culmination of years of political wrangling. “It is rare to have the opportunity in a lifetime to change the world,” former French president François Hollande told delegates gathered on the final day of negotiations. “Seize it so that the planet can live on, so that humanity can live on.” But cooperation, even when the health of the whole planet is on the line, can be a fragile, fleeting thing. After Donald Trump was elected president in 2016, he began the process of formally withdrawing the US from the Paris accord. One by one, Trump backtracked on existing federal efforts to cut down on pollution, too. The words “climate change” began disappearing from government websites and documents  
4. According to paragraph 3, what is the result of heightened awareness of global citizens?

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Alzheimer's disease impairs a person's ability to recall memories, both distant and as a few hours before. Although there is no yet a cure for the illness, there may be hope for a cure with a protein called nerve growth factor. The protein is produced by nerve cells in the same region of the brain where Alzheimer's occurs. Based on this relationship, scientists from the University of Lund in Sweden and the University of California at San Diego designed an experiment to test whether doses of nerve growth factor could reverse the effects of memory loss caused by Alzheimer's. Using a group of rats with impaired memory, the scientists gave half of the rats doses of nerve growth factor while giving the other half a blood protein as a placebo, thus creating a control group. At the end of the four-week test, the rats given the nerve growth factor performed equally to rats with normal memory abilities. While the experiment do not show that nerve growth factor can stop the general process of deterioration caused by Alzheimer's, they do show potential as a means to slowing the process significantly.
2. The word "impairs" in line 1 is most similar to which of the following?

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Advances in mobile technology and social networking websites mean we spend more time online than ever before. If Facebook were a country, it would be the third largest in the world by population (The Economist, 2010). It is (1) ______ not surprising that so many psychologists, sociologists, and others are eager to give their thoughts on how this is impacting negatively on our society. The biggest criticism levelled at social networking is that young people are losing their offline friends to online friends (2) ______ are unable to provide the same deep connection and emotional support. However, a lot of research shows these criticisms are generally (3) ______. Allen et al. (2010) discovered that it is socially adjusted adolescents who are more likely to have a networking profile than those who are not. One study by the Pew Internet and American Life Project (2009) found that people are not (4) ______ offline friends with online companions but are using them to support their offline relationships. The study also found that social networks allow us to have discussions with a much more diverse set of people than in the real world, so we share knowledge with people from a wide (4) ______ of backgrounds.

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Previously, people often only considered second-hand smoke as a welfare issue, focusing on the smell and the irritation that tobacco smoke causes to eyes, nose and throat. But now the weight of evidence for much more serious risks to health from second-hand smoke has grown too great to ignore. Tobacco smoke contains around 4,000 chemicals, including arsenic, benzene, formaldehyde and ammonia. Around 60 of these chemicals are known or suspected to cause cancer. Many of the toxic chemicals are actually more concentrated in the smoke that’s given off by the burning tip of a cigarette (sidestream smoke). Around 85 per cent of the smoke in a room where people are smoking is the more toxic sidestream smoke. By breathing in it in the atmosphere, the non-smoker is exposed to many of the same health risks as the smoker. The best known risk to smokers, lung cancer, is also more common in people regularly exposed to second-hand smoke. The Government’s Scientific Committee on Tobacco and Health (SCOTH) reported in 1998 that exposure to second-hand smoke increases the risk of lung cancer in non-smokers by 20-30 per cent. Even though they inhale only 1% of the smoke, non-smokers exposed to second-hand smoke may suffer 25 per cent of the increased risk of heart disease associated with active smoking (one recent study suggests it might be as much as 50 per cent). Just 30 minutes of breathing second-hand smoke can reduce the coronary blood supply of a non-smoker to the same level as that of a smoker. A study in New Zealand found that exposure to second-hand smoke increases the risk of stroke by 82 per cent in non-smokers. This is a serious concern, as stroke is such a common condition. Moreover, around 3.4 million people in the UK have asthma and for most of these, tobacco smoke is a trigger for an asthma attack. For someone with asthma, just one hour of exposure to second-hand smoke can cause a 20 per cent deterioration in lung function. During pregnancy, breathing in second-hand smoke increases the risk of having a baby with a low birth weight. Small babies are at much greater risk of infections and other health problems. A recent review of international research on the immediate health impact of smokefree workplace legislation found rapid and dramatic improvements. Air quality, respiratory health and levels of heart attacks and heart disease all improved substantially within months of the legislation being introduced.
7. The article states that __________

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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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Most people have heard about how PTSD can unravel a person. Fewer have heard about posttraumatic growth, the process that lifted Curry out of his despair and into his new role as a leader in the veteran community. The term - defined as “positive change that occurs as a result of the struggle with highly challenging life crises” - was coined in the mid-1990s by Richard Tedeschi, PhD, and Lawrence Calhoun, PhD, after studying how people develop wisdom. They identified five specific ways people can grow after a crisis. First, their relationships strengthen. One woman diagnosed with breast cancer, for example, said she realized her relationships “are the most important things you have.” Bereaved parents told Tedeschi and Calhoun that losing a child had made them more compassionate. Second, they discover new paths and purposes in life. Sometimes these are related to a particular survivor mission. One interviewee became an oncology nurse after losing her child to cancer. Other times, the crisis becomes the catalyst for a more general reconsideration of priorities, as Christine discovered when she started attending The Dinner Party in the aftermath of her mother’s death. Third, the trauma allows them to find their inner strength. The common thread among those Tedeschi and Calhoun studied is a “vulnerable yet stronger” narrative. This paradoxical outlook defined the attitude of a rape survivor who admitted the world seemed more dangerous after the assault, but that, at the same time, she felt more resilient as a result of the inner strength she’d built. Fourth, their spiritual life deepens. That could mean they renew their faith in God, or it could mean they grapple with existential questions more broadly, coming to know certain deep truths about the world or themselves, as one interviewee did after his spinal-cord surgery. Finally, they feel a renewed appreciation for life. Rather than taking for granted a stranger’s kindness or the vivid colors of autumn leaves, they savor the small moments of beauty that light up each day. The difference between those who are able to grow from adversity and those who are stymied lies in what Tedeschi and Calhoun call “deliberate rumination” or introspection. The participants they studied spent a lot of time trying to make sense of their painful experiences, reflecting on how the events changed them. Doing so helped them make the life changes associated with posttraumatic growth.  
3. According to paragraph 2, which situation represents the second growing approach?

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The cellphone/ be/ portable/ so/ I/ can/ bring/ everywhere.

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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
5. The word “pronounced” in paragraph 4 is closest in meaning to _______

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The elusive “generation gap” is construed as being widest when one of the two  generations is the adolescent. While the gap exists in almost all facets of social and personal domains, never is it more evident than in the field of technology, where one of the generations is a digital native and the other, an immigrant or even an alien, depending upon the stage of the continuum of adulthood. The use of gadgets itself is markedly influenced by age, as shown in Pew Research Center’s Internet & American Life Project that studied how different generations use technology.  Although cell phones are now the predominant form of interpersonal communication, the way they are used significantly varies between generations. Youngsters use their phones for a variety of activities such as taking photos, texting, going online, instant messaging, emailing, playing games, listening to music, and even recording and watching videos while adults progressively according to their age progression, restrict the use of these devices to fewer and fewer activities. Interestingly, Pew Research found that the one cell phone activity that transcends age is taking photos, with adults just as likely to click photos on the cell phone cameras as the young. However, the type of photos taken differs, with adolescents clicking more selfies that adults.  The Internet seems to be a good leveler of digital use, at least within the US. While fewer than 60% of senior citizens (ages >65) are conversant with and use the Internet in 2014, the percentages are comparable for all other age groups; 92% for teens, 97% for young adults (18-29 years), 94% for the mid-lifers (30-49%) and 88% for older adults (50-64%). How the internet is used also varies among age groups. While teenagers and young adults under age 30 use the Internet to find information, socialize, play, shop and perhaps conduct business, older users visit government websites or seek financial information online. However, this gap is narrowing, according to Pew Research, and activities such as emails and search engines being increasingly used by all age groups that are online.  Social media is another area where there is an age difference. While the percentage of adults who use social media (72%) is not that different from the youngsters in it (81%), there is a difference in the type of social media applications that is favored. Youngsters (teens and young adults) seem more prevalent in social media applications such as Facebook and Twitter while adults dominate tumblr, Instagram and Pinterest. Adults are largely passive or semi-active users of social media as seen in that adults typically add contacts only on request while adolescents actively seek new friendships. Adolescents use the social media platform as a conversation space and an outlet for self-expression, aimed largely at building new relationships while adults use social media to maintaining existing relationships. Adults have fewer contacts with a third of the adults in social media admitting to having family as their main contact group. Contrast this with the fact that only 10 and 15 percent of adolescents reported to have family in their social media contact list.
2. What does the word “they” in the second paragraph refer to?

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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.
4. The word “it” in paragraph 2 refers to ________

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

Public universities, private universities, arts colleges, and community colleges all has a significant role in higher education in the United States

A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometres in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the tune it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word "radar" in fact gets its name from the term "radio detection and ranging". "Ranging" is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots radar is essential for air traffic control tracking ships at sea, and for tracking weather Systems and storms.

According to the passage, the distance between a radar set and an object can be determined by   

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions:
The ruined temples of Angkor are perhaps one of the most impressive Seven Wonders of the World. Located in modern day Cambodia near Lake Tonle Sap, the largest freshwater lake in Asia, Angkor was the seat of power for the Khmer Empire for the ninth to the fifteenth century. The ruins of Angkor are documented as some of the most impressive ones in the world, rivaling the pyramids of Giza in Egypt. Why this mighty civilization died out is a question that archaeologists are now only beginning to ponder. The answer, it turns out, may be linked with the availability of fresh water.
One possible explanation for the downfall of the Khmer Empire has to do with the inhabitant’s irrigation system. The temples and palaces of Angkor were constructed around a series of artificial reservoirs and canals which were annually flooded to capacity by the Mekong River. Once filled, they were used to irrigate the surrounding paddies and farmland during the course of the year. Farmers were completely dependent on the water for their crucial rice crop. Without consistent irrigation, the farmers would have been unable to maintain functional crop production.
Scientists speculate that toward the end of the Khmer Empire the hydraulic system of the reservoirs and canals broke down. The construction of hundreds of sandstone temples and palaces required an enormous amount of physical labor. In addition, as the capital of Khmer Empire, Angkor contained upwards of one hundred thousand people who resided in and around Angkor. In order to feed so many people, the local farmers were driven to grow food more quickly and more efficiently. After centuries of continual use, the irrigation system was pushed beyond its capacity. Soil erosion, nutrient depletion, and loss of water led to decrease in the food supply. With the less food available, the people of Angkor slowly began to migrate to other parts of Cambodia, thus leaving the marvelous city of Angkor to be swallowed by the jungle. Therefore, it is speculated that the Khmer Empire may have fallen victim to its own decrepit infrastructure.

The word “they” in paragraph 2 refers to     .

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Once restricted to luxury or super-tech buildings, home automation is proving to be an increasingly fundamental and affordable addition to architectural projects. The idea is to connect devices, which in turn connect and talk through a centralized control unit, accessible by computers, tablets, and mobile phones. For example, home automation users can turn the lights on or off at specific times each day, adjust the heater or air conditioner to turn on a few minutes before they arrive home. In addition to these immediate effects, monitoring applications can also provide accurate home information by generating detailed reports on equipment that could be working better or spending less. That is, in addition to smartphones and personal computers, appliances and sensors are able to identify patterns, process information, and perform tasks both through commands and automatically. Although it sounds like a science fiction script, these are technologies that are not so far from us.  Artificial intelligence can be used to automate threat detection and perhaps more proactively alert us if something looks wrong, such as heat sensors and video cameras setting off alarms and calling firefighters in the event of a short circuit. Through facial recognition algorithms on social media, the system itself can tell if someone outside your circle of acquaintances is trying to access your space and send a message to your mobile phone. This type of technology can improve the efficiency of security systems and reduce false alarms. Automation can be useful for people with disabilities and for the elderly. People with Parkinson’s disease or other motor diseases can trigger switches without touching them, and motion sensors can trigger safety lights automatically. Blood pressure sensors and blood sugar levels can be incorporated into these systems, providing peace of mind to close relatives. The ability to automate repetitive housekeeping can free time for more important things. For example, an internet-connected refrigerator can check for missing items and make purchases online. It is important to mention that these systems must be highly protected, as a single attempt to break into this centralized system can lead to the invasion of privacy and the loss of valuable confidential information. Still, most people who have experienced life in an automated space will likely be uncomfortable returning to traditional systems  
4. According to paragraph 3, how can the smart house system identify the visitors of one’s place?

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She/ be/ to Dubai/ three times/ year.

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As cases of coronavirus infection proliferate around the world and governments take extraordinary measures to limit the spread, there is still a lot of confusion about what exactly the virus does to people’s bodies. The symptoms — fever, cough, shortness of breath — can signal any number of illnesses, from flu to strep to the common cold. The virus is spread through droplets transmitted into the air from coughing or sneezing, which people nearby can take in through their nose, mouth or eyes. The viral particles in these droplets travel quickly to the back of your nasal passages and to the mucous membranes in the back of your throat, attaching to a particular receptor in cells, beginning there. Coronavirus particles have spiked proteins sticking out from their surfaces, and these spikes hook onto cell membranes, allowing the virus’s genetic material to enter the human cell. That genetic material proceeds to “hijack the metabolism of the cell and say, in effect, ‘Don’t do your usual job. Your job now is to help me multiply and make the virus,’” said Dr. William Schaffner. As copies of the virus multiply, they burst out and infect neighboring cells. The virus then “crawls progressively down the bronchial tubes,” Dr. Schaffner said. When the virus reaches the lungs, their mucous membranes become inflamed. That can damage the alveoli or lung sacs and they have to work harder to carry out their function of supplying oxygen to the blood that circulates throughout our body and removing carbon dioxide from the blood so that it can be exhaled. The swelling and the impaired flow of oxygen can cause those areas in the lungs to fill with fluid, pus and dead cells. Pneumonia, an infection in the lung, can occur  
3. According to paragraph 2, what is NOT the mentioned activities of coronavirus in human body?

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Botswana, officially the Republic of Botswana, is a country in southern Africa that shares borders with South Africa, Namibia and Zimbabwe. The capital, Gaborone, (1) _______ on the Notwane River in the South east of Botswana. The Kalahari Desert covers more than 70% of Botswana. The Kalahari isn’t a true desert because it rains more each year there than in most (2) _______ deserts. Despite this, Botswana is a dry country. When it does rain, the rain is often heavy and there are floods. Botswana is a popular tourist destination, with people from all over the world coming to see its amazing animals. During the seasonal floods, the land becomes a lush animal habitat. The wide variety of wildlife (3) __________ elephants and lions. Many visit Chobe National Park to see its 70,000 elephants, (4) __________ are the largest of all living elephants. The grassland and river valleys are home to giraffes, cheetahs, hyenas and wild dogs. The baobab tree, an icon of the African savannah, plays an important role in Botswana culture and nearly every part of it is useful. For example, it (5) __________ used to make rope and people pick the leaves to make soup

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Knowing what to expect from your destination will make all aspects of planning an adventure trip easier, as well as helping you to get the most out of the experience. Research will help you pick the best places to go but you’ll also learn what you need to pack. What health and safety (1) __________ to take, and what cultural (and sometimes political) issues you should be aware of. Climate and seasonal pricing are important factors in your decision about when to go. (2) ______ for adventure travel, bad weather or weather you’re not prepared for can ruin the trip. While you can’t predict the (3) __________ weather in advance, you can learn about climate trends ahead of time when doing your destination research. Seasonal popularity and pricing should also be considered if you intend to keep away from peak-season crowd and prices. While some research is absolutely essential, don’t plan every moment of your trip in advance. Over-planning tends to make us less (4) __________ to take part in the spontaneous events that are part of any sort of adventure travel. It’s really important to (5)_________ a big reserve of excitement and energy ready for the unexpected adventures.