Physical activity is important in preventing cardiovascular(心血管的) disease in young people so long as they don’t undertake very intense activity on days when air pollution levels are high, according to a recently released study.
Until now, little has been known about the relationships between the health benefits of physical activity taking place outdoors and the potentially harmful effects of air pollution. Previous research by the authors of the current study had investigated the question in middle-aged people at a single point in time, but this is the first time that it has been investigated in young adults aged between 20—30 years over a period of several years. In addition, the researchers wanted to see what happens when people increase or decrease their physical activity over time.
At each health check-up, the participants completed a questionnaire asking about their physical activity in the past seven days and this information was changed into units of metabolic equivalent task(MET, 代谢当量任务) minutes per week(MET-mins/week). The participants were divided into four groups: 0, 1—499, 500—999 and 1000 or more MET-mins/week. People are recommended to do 500—999 MET-mins/week and this can be achieved by; for example, running, cycling or hiking for 15—30 minutes five times a week, or brisk walking, doubles tennis or slow cycling for 30—60 minutes five times a week.
The researchers used data to calculate annual average levels of air pollution, in particular the levels of small particulate matter that are less than or equal to 10 or 2.5 microns in diameter, known a PM10 and PM25.
Overall, the results show that physical activity is associated with a lower risk of developing cardiovascular disease among young adults. However, when air pollution levels are high, exercising beyond the recommended amount may offset or even reverse the beneficial effects. The study cannot show that air pollution causes the increased cardiovascular risk, only that it is associated with it.
1. What can we know from Paragraph 2?A.Outdoor physical activity harms our health. |
B.Exercising isn’t advised on serious air pollution days. |
C.A first in-depth survey has been done on young adults. |
D.Middle-aged people have been the ideal research target. |
A.By doing research on young adults. |
B.By collecting PM10 and PM2.5 data. |
C.By making experiments on middle-aged people. |
D.By studying a questionnaire on physical activity. |
A.Air pollution leads to cardiovascular disease. |
B.Cardiovascular disease relates to air pollution. |
C.More physical exercise benefits young people. |
D.Young adults seldom develop cardiovascular disease. |
A.Physical activity & air pollution: when to do more or less physical activity. |
B.Physical activity & health benefit: how to prevent cardiovascular disease |
C.Physical activity & air pollution: what to do with high air pollution levels |
D.Physical activity & health benefit: how to maximize the health benefits of exercising |
相似题推荐
【推荐1】If you wake up with a headache, your morning may be not pleasant. Some health experts help explain what causes these early-morning headaches and what you can do to wake up with a clear head.
Mind-racing anxiety
Both lacking sleep and getting too much sleep can cause head pains. The catch is that people who have headaches are up to eight times more likely to suffer from sleep disorders, making it even tougher to address the root of the problem. Looking at social media late into the night can cause unhealthy sleep patterns.
Awkward sleep position
Sleeping in an unusual position can result in muscle strain in the head and neck area, leading to morning headaches.
Caffeine withdrawal (脱瘾)
Anyone who has gone for a few days without their caffeine hit knows that withdrawal headaches are real.
A.Poor sleep patterns |
B.Awful sleeping surroundings |
C.Calm your thoughts, and ease the ache |
D.Drinking a lot of water can help clear your head |
E.For best results, keep bed and wake times consistent |
F.However, drinking plenty of caffeine can also be a problem |
G.Proper support could help ease the likelihood that you'll wake up in pain |
【推荐2】While we can’t control the COVID-19 outbreak, we can control how we react to it while keeping ourselves safe as well.
● Assess our personal risk for getting infected
We can take steps to figure out our own personal risk for developing corona virus: whether there are confirmed cases in our community; whether we’ve been exposed to them, and whether we have immune or breathing problems.
● Try to limit our news consumption
●
Coronavirus seems scary and it’s OK to recognize that our anxiety is normal, while ignoring our stress will only make the anxiety worse. If someone asks us to stop feeling anxious, we can respond with, “Well, what are you doing to be prepared?” If they still insist on minimizing our fears, try to brush them off. Listen to our own voice and gain inner peace from it.
● Follow the correct preventive methods to protect against the virus
Try to avoid touching our eyes, nose, and mouth.
If, despite trying these tips, you still feel anxious or that your fears are disturbing your daily life, it’s not a bad idea to talk to a mental health professional.
A.Those steps give us a sense of control over our health |
B.Realize that it’s natural to be worried about the outbreak |
C.Of course, the anxiety about the outbreak is understandable |
D.Do medical cleaning frequently on touched objects and surfaces |
E.Here is what we can do to manage our anxiety during the outbreak |
F.This is because it’s new, making it appear more unknown and uncertain |
G.It’s true that we should know more information about the deadly disease |
【推荐3】Nutritional advice comes from every corner of our world.
The subject of popping a pill to get the recommended daily allowance (定量) of the various vitamins essential to overall good health may be somewhat controversial. After all, different nutrients may be absorbed at different rates by our bodies. Surely we shouldn’t expect one small pill to cover it all.
One vitamin that is vital for good health in so many ways but is too often taken for granted is vitamin D.
While sunlight exposure is beneficial, not everyone benefits from the sun at the same level. Sun exposure near the equator (赤道) is far different from that an Eskimo might receive at the North Pole.
A.It is often associated with exposure to sunlight. |
B.Darker skin also absorbs less vitamin D than paler skin. |
C.We get many tips on how to add nutrients to our everyday menu. |
D.Often attention to our nutritional balance can improve the situation. |
E.It is essential for strong, healthy bones and a well-functioning brain. |
F.Still, it pays to understand the role many vitamins play in staying fit. |
G.There are many sources of dietary vitamin D besides Mother Nature. |
【推荐1】Imagine a school that expected its students to become literate without any formal instruction. Most parents would be alarmed by such an approach, which would leave their children confused and with gaps in their understanding. This, however, has been the philosophy on character development in many of our schools. Why is the development of character seen as somehow different from the other skills that we teach?
Of course there will always be learning by osmosis (耳濡目染) in any school, but as a teacher and primary school head I have found that a child’s moral literacy is strengthened when they acquire the building blocks of good character such as consideration, courage and honor: qualities which are commonly known as virtue.
I personally find that exploring a virtue over a two-week period provides a simple and effective program that allows for the creative input of both teacher and student and a chance for the virtue to embed (使融入) itself. Once a lesson on a virtue such as honesty has been completed we need to allow time for children to practice this concept just as would be the case with fractions or verbs. Allowing children to role play a situation such as making up excuses to cover a mistake can be enormously interesting, and the drama can be frozen allowing the characters to be questioned about their feelings and motives. It’s also a safe way for children to experience for themselves how a lie usually goes out of control.
Our role as educators is also to look for opportunities to help our students as they attempt to strengthen their characters. When something goes wrong we guide the young person to the virtue that will prevent it from happening again. For instance, when a student thoughtlessly disturbs the calm atmosphere of the library, instead of a response such as, “that was really disrespectful and selfish of you!” we draw out from them the required virtue: “When you’re walking through the library, what virtues do you need to use?”
1. The underlined word “philosophy” in the first paragraph is closest in meaning to __________.A.study | B.subject |
C.motto | D.viewpoint |
A.there tends to be disagreement about what character education is |
B.most parents are not satisfied with the teaching methods adopted in schools |
C.the approach to character education is generally considered different from the approaches to other skills |
D.more and more schools are adopting strategies to improve school attendance |
A.they have gradually learnt to imitate. |
B.they have learnt the importance of role play. |
C.they have learnt specific moral qualities one by one. |
D.they are given enough time to practice. |
A.Story readings and discussions. | B.Osmosis. |
C.Taking every opportunity to teach character. | D.Role play. |
A.Teaching morals and values has been a frequently discussed topic in the past few years. |
B.The author advocates putting virtues into lessons and school life to encourage character development in children. |
C.Kids throughout the population face the same needs, the same challenges, and the same realities in their lives. |
D.Role plays are an excellent way of getting students to practice their English. |
【推荐2】People who drink a lot of sugary drinks have a high risk of developing cancer, researchers announced last week. However, the evidence cannot yet confirm a direct connection between the two. The researchers said the findings of a large study in France suggest that limiting the amount of sugar-sweetened drinks may help reduce the number of cancer cases. Drinking sugary drinks has become more common worldwide in the last several decades. Sugar drinks are linked to obesity—the condition of being extremely overweight—which increases a person’s cancer risk.
The study was published in The BMJ British medical journal. It looked at data from just over 100,000 French adults—21 percent of them men and 79 percent women. The researchers noted how many sugary drinks each of them had, and followed them for up to nine years—between 2009 and 2018. The researchers appraised their risk for all types of cancer, and some individual ones such as breast, colon and prostate cancers.
The scientists found that a 100 milliliters (毫升) increase in sugary drinks was linked to an 18 percent increased risk of overall cancer and a 22 percent increased risk of breast cancer. The researchers looked at those who drank fruity juices and those who drank other sweet drinks. Both groups, they found, showed a higher risk of cancer overall.
For prostate and colorectal cancers, no link was found. The researchers said this might have been because there were only a limited number of cases of these cancers in the study group.
Experts not directly involved in the work said it was a well-run study, but noted that its results could not establish cause and effect. Amelia Lake is an expert in public health nutrition at Britain’s Teesside University. She said that while this study does not provide a definite cause and effect between sugar and cancer, it does add to the importance of efforts to reduce sugar intake. “The message from the totality of evidence on excess sugar and various health outcomes is clear,” she said.
1. What did the study find?A.Sugary drinks directly lead to cancer. |
B.Heavy sugary drinks might be linked with cancer. |
C.Obesity mainly results from sugary drinks. |
D.Cancer is not necessarily caused by obesity. |
A.Controlled | B.Evaluated. | C.Determined. | D.Wrote. |
A.By making comparison. |
B.By giving different opinions. |
C.By using actual figures. |
D.By following the order of time. |
A.More evidence needs to be found in the future. |
B.The researchers should follow more people. |
C.Reducing sugar consumption needs great efforts. |
D.Cutting down the amount of sugar is important. |
The year is 2094. It has been announced that a comet is heading towards the Earth. Most of it will miss our plant, but two fragments will probably hit the southern part of the Earth. The news has caused panic.
On 17 July, a fragment four kilometers wide enters the Earth’s atmosphere with a huge explosion. About half of the fragment is destroyed. But the major part survives and hits the South Atlantic at 200 times the speed of sound. The sea boils and an enormous wave is created and spreads. The wall of water rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people are drowned. The wave moves into the Indian Ocean and heads towards Asia.
Millions of people are already dead in the southern part of the Earth, but the north won’t escape for long. Tons of broken pieces are thrown into the atmosphere by the explosions. As the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. Wars break out as countries fight for food. A year later civilization has collapsed. No more than 10 million people have survived.
Could it really happen? In fact, it has already happened more than once in the history of the Earth. The dinosaurs (恐龙) were on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believe that the Earth was hit by a space fragment. The dinosaurs couldn’t survive in the cold climate that followed and they became extinct. Will we meet the same end?
1. Which of the following is NOT TRUE according to the author’s description of the disaster in 2094?
A.The whole world becomes extremely cold. |
B.All the coastal cities in African are destroyed. |
C.The whole mankind becomes extinct. |
D.The visit of the comet results in wars. |
A.Because they could only live in the warm climate. |
B.Because they once ruled the Earth. |
C.Because their extinction shows future disasters. |
D.Because dinosaurs and humans never live in the same age. |
A.give an accurate description of the possible disaster in the future |
B.prove that humans will sooner or later be destroyed |
C.tell the historical development of the Earth |
D.warn of a possible disaster in the future |
A.terror story | B.news report |
C.research paper | D.article of popular science |
【推荐1】The Bermuda Triangle is an area in the western part of the North Atlantic Ocean, near Florida in the USA, where a number of aircraft and ships are said to have disappeared mysteriously.
①The earliest suggestion of unusual disappearances in the Bermuda area appeared in a September 17, 1950 article. Two years later, Fate magazine published “Sea Mystery at Our Back Door”, covering the loss of several planes and ships, including the loss of Flight 19. Flight 19 alone would be covered again in the April 1962 issue of American Legion magazine. In it, author Allan W. Eckert wrote that the flight leader had been heard saying, “We are entering white water. Nothing seems right. We don’t know where we are.” In the February 1964, the article “The Deadly Bermuda Triangle” argued that Flight 19 and other disappearances were just part of strange events in the area.
②Triangle writers have used a number of supernatural ideas to explain the events. One explanation refers to leftover technology from the mysterious lost continent of Atlantis. Some of the Triangle writers related the events to UFOs. This idea was used by Steven Spielberg for his science fiction film Close Encounters of the Third Kind, in which the lost Flight 19 aircrews were taken by aliens.
③But there are also some explanation relating to nature. One of them for some of the disappearances has focused on large fields of a type of natural gas on the continental shelves. Laboratory experiments carried out in Australia have proven that bubbles can sink a large ship by decreasing the density (密度) of the water; any remains rising to the surface would quickly disappear due to the Gulf Stream. It has been assumed that the eruption of volcanoes (火山) may produce large areas of bubbles so that water is no longer able to provide enough supporting power for ships. If this were the case, such an area forming around a ship could cause it to sink very rapidly and without any warning.
④Violent weather is likely to be another reason. Powerful storms forming in tropical (热带的) waters have caused thousands of deaths and caused billions of dollars in damage. These storms have in the past caused a number of incidents related to the Triangle.
1. According to the passage, the loss of Flight 19 was first covered ________.A.in 1950 | B.in 1952 | C.in 1962 | D.in 1964 |
A.① | B.② | C.③ | D.④ |
A.a type of natural gas | B.large areas of bubbles |
C.the eruption of volcanoes | D.the decrease of water density |
A.The truth behind the disappearance in the Bermuda Triangle. |
B.The puzzle of the Bermuda Triangle and its explanations. |
C.Strange accidents that happened in the Bermuda Triangle. |
D.The exploration of the Bermuda Triangle in history. |
【推荐2】Our Planet Earth is full of life and has incredible biodiversity. Biological Diversity or Biodiversity is the base of human existence and fundamental to its well-being. Species are the building blocks of this life on Earth, and it is believed that the species that are at present globally found have continuously evolved over 65 million years since the Last Mass Extinction. However, the nature and extent of our planet’s biodiversity at all levels have not been completely evaluated yet. Thus, the exact number of species found in the world remains unknown. Over the years, with the advancement of scientific knowledge and the discovery of more new species, it has been approximated that there are, at present, 10 million to 14 million species on Earth, of which 1.2 million species have been databased. This means that still more than 86% of the terrestrial (陆生的) and 91% of the marine species remain unknown.
Every year, taxonomists (分类学家) describe thousands of species, some of which are completely new to science, while in some cases, the species and subspecies are closely examined and determined whether they can be considered distinct species.
A study has revealed that over 99.9% of all species amounting to more than 5 billion species that ever lived here, are believed to be extinct. At present, our planet houses millions of species, among which 86% live on land, 13% in the deep subsurface, and a mere 1% in the oceans. However, Biodiversity is not evenly distributed on Earth, and its number varies greatly on different continents.
The undiscovered and misidentified species slow our ability to understand patterns and changes in global biodiversity and the rate of species extinctions (灭绝). Even after several years of taxonomic studies, only 14% of terrestrial species and 9% of marine species have been officially added to the central database. Necessarily, some species will become extinct before researchers realize they ever existed.
1. What does the underlined word “marine” mean in Paragraph 1?A.Rare. | B.Oceanic. | C.Endangered. | D.Novel. |
A.Examine distribution of species. | B.Compare species from subspecies. |
C.Decide the situation of the species. | D.Describe diversity of new-found species. |
A.The central database covers all species. | B.The rate of species extinctions is rather high. |
C.Many undiscovered species have been extinct. | D.Humans know little about endangered species. |
A.How Many Species Are Extinct? | B.How Long Species Exist On Earth? |
C.How Old Are Species On Earth? | D.How Many Species Are On Earth? |
【推荐3】Drinking your daily cup of coffee may help to lower your risk of stroke(中风)and heart disease, according to a latest research. Researchers at the Heart and Vascular Centre, Budapest, Hungary have found that drinking up to three cups of coffee a day may help protect your cardiovascular(心血管的)system.
The team studied data from nearly 500,000 people registered in the UK Biobank with an average age of 56 and no signs of heart disease at the time of recruitment. They divided them into three categories according to their coffee drinking habits: non-drinkers, up to three-cup-a-day drinkers, and more than three-cup-a-day drinkers.
Considering influencing factors such as age, sex, weight height, physical activity, blood pressure, diabetes, socioeconomic status, and usual intake of alcohol, meat, tea, fruit and vegetables, they found that three-cup-a-day drinkers had a 12 per cent lower risk of death from all causes, a 17 per cent lower risk of death from cardiovascular disease, and a 21 per cent lower risk of stroke
"To our knowledge, this is the largest study to systematically assess the cardiovascular effects of regular coffee consumption in a population without diagnosed heart disease," said study author Dr Judit Simon.
To further investigate the effect, the researchers used data from more than 30, 000 partic-ipants in the UK Biobank who had undergone MRI(核磁共振成像)scans to determine the structure and functioning capacity of their hearts.
Dr Judit Simon said, "The imaging analysis indicated that compared with participants who did not drink coffee regularly, daily coffee consumers had healthier sized and better func-tioning hearts. Our findings suggest that coffee consumption of up to three cups per day is associated with favourable cardiovascular outcomes. While further studies are needed to explain the underlying mechanisms, the observed benefits might be partly explained by positive changes in cardiac structure and function. "
1. What is the latest research mainly about?A.The risk of heart disease. | B.The ways to avoid stroke. |
C.The cups of drinking coffee. | D.The benefits of drinking coffee. |
A.To show the difficulty of the research. |
B.To show the reliability of the findings. |
C.To introduce the process of the research. |
D.To introduce the limitation of the findings. |
A.They find coffee's positive effects on people. |
B.They focus on negative changes in people's hearts. |
C.They oppose coffee consumption. |
D.They have been accepted widely. |
A.Carefree. | B.Skeptical. | C.Favourable. | D.Tolerant. |
【推荐1】Nearly each country in the world has its official honors reserved (保留) for outstanding people. For instance, in the United State, the highest civilian honor is the Presidential Medal of Freedom. In China, there are also such official honors given to people who have made outstanding contributions (贡献)to the nation's construction and development.
On Sept. 17, 2019, President Xi Jinping signed a presidential decree (主席法令) to award 42 individuals the Medal of the Republic, the Friendship Medal and various honorary titles.
Shen Jilan, an 89 year old farmer, is one of the eight people who were awarded the Medal of the Republic. She is the only person in China who has served at all 13 National People's Congresses (人民代表大会) since 1954. She is the very witness to the development of the People's Congress system. It was she who put forward the clause on “equal pay for equal work” between men and women, which was written into the first Constitution of PRC in 1954.
Tu Youyou, who had received the Nobel Medicine Prize in 2015,was also awarded the Medal of the Republic. She is famous for finding outQinghaosu, which has helped to save millions of lives. Before the discovery, malaria is a deadly disease to people of tropical developing countries in South Asia, Africa and South America. Therefore, her discoveryof Qinghaosuand its treatment of this disease is considered as an important breakthrough in the 20th century.
Yuan Longping, the father of hybrid rice (杂交水稻), received the Medal of the Republic as well. He is known for his great contributions to hybrid rice research and the wonderful work he has done to improve rice production in many developing countries. Judging from his appearance, he looks like a farmer rather than a scientist, with his sunburnt face and slim, strong body. That is because he always works under the sun for a long time and that is how he developed hybrid rice which produces 1/3 more than normal rice.
Ye Peijian who has been devoted to China's lunar program for twenty years, received the honorary title “the people's scientist”. He is well-known as a leading scientist in deep-space exploration at the China Academy of Space Technology.
1. Based on the presidential degree,__________________.A.Shen Jilan was awarded the presidential medal for the clause on "equal pay for equal work" |
B.Tu Youyou received the Friendship Medal for her contribution to find outQinghaosu |
C.Yuan Longping was awarded the highest Civilian Honor for his hybrid rice research |
D.Ye Peijian received the honorary title “the people's scientist” in 2019 |
A.Shen Jilan didn’t get equal pay for equal work as men. |
B.Malaria helped Tu Youyou to discoverQinghaosuto treat disease |
C.Yuan Longing has improved the word rice production by 30% |
D.Ye Peijian has had rich experience in deep-space exploration |
A.An advertisement. | B.A science fiction. |
C.A health journal. | D.A news report |
A.Devoted and hard-working | B.Creative and easy going. |
C.Polite and devoted. | D.Honest and patient. |
A.Ye Peijian's work at the China Academy of Space Technology. |
B.Tu youyou's devotion to the discovery ofQinghaosu. |
C.Yuan Longping's great work in hybrid rice research. |
D.The development of the People's Congress system. |
【推荐2】Body language is part of nonverbal language. It includes things like gestures, facial expressions, and even small things that are hardly perceptible like a brief shrug of the shoulder or a slight nod of the head.
There are many ways to interpret (诠释) body language but you must know that these are frequently specific to a culture. For instance, Americans wave goodbye with the palm (手掌) facing the person they are waving to. In other cultures, waving goodbye may occur with the palm up to the sky. To people in the USA, this might look like a gesture asking someone to approach rather than a wave goodbye.
Still, since people live in one area where body language may be similar among them, it's important to know that you can communicate a lot by how you gesture, what you do with your arms, and even how you posture. A person in much of the USA who sits with hands crossed over the chest, and with legs crossed, may be sending an unintended message that they're really not open to talking. Eye contact is another key element of non-verbal contact in much of the western world.
It would be impossible to describe all the ways people use non-verbal language, but it's important to remember that non-verbal language isn't necessarily universal. If you're observing body movements that seem incorrect, consider cultural or regional differences that may account for it. You may even note that family members have similar gestures that aren't that common elsewhere. If you think your body language is off or needs improvement in a new area, just remember ''When in Rome, do as the Romans do.'' That can make you appear more confident or direct.
1. What does the underlined word ''perceptible'' in paragraph 1 mean?A.Suitable. | B.Bearable. |
C.Noticeable. | D.Believable. |
A.He sees friends off with the palm up to the sky. |
B.He waves goodbye with the palm facing friends. |
C.He crosses his hands over the chest to show politeness. |
D.He uses eye contact to send important messages to friends. |
A.Body language differs in cultures and areas. |
B.People need to improve their body language. |
C.Messages can be expressed through body language. |
D.Communication calls for proper body language. |
A.Totally accept it. | B.Just ignore it. |
C.Try to understand it. | D.Try to change it. |
【推荐3】Traditions of giving middle names vary around the world.
Scotland
Middle names are actually a fairly recent discovery in Scotland. However, as the practice has become popular around the world, it has become pretty common for Scottish babies to have middle names. Because last names in Scotland are generally associated with their family roots, and first names usually describe a physical characteristic, many parents see a middle name as an opportunity to give their baby a slightly more creative name.
Spain and Latin America
In Spain and Latin America, a middle name is a way to break free from the cultural code governing first names. In some countries, even first names are legislated(立法) to be of Christian origin. In Chile, most girls are named Maria, after the Virgin Mary, so the middle name is used in practice for differentiation. Maria is the most common name in the Spanish-speaking world, so in all Spanish-speaking countries the middle name takes on great significance.
Russia
In Russia, both boys and girls are given middle names based on their father's first name. For boys, the middle name usually has ovich, or evich, added to its ending. For girls, the middle patronymic(从父名衍生出的名字) name usually has ovna, or evna, added to its ending. People in Russia are often referred to by both their first and middle names, sort of the way parents in America use their children's full names when they're trying to get their attention(or yell at them). Close friends in Russia often don't use their first names completely, and use only patronymic names, when talking to each other.
Australia
According to Law Buddy, an Australian legal advice service, child naming laws in Australia allow Birth Registrars to refuse to register baby names that to be offensive to register to careless, inappropriate, ridiculous. They do allow for children to get a middle name, which is typically reserved for the mother's maiden name(娘家姓),provided, of course, that the mother's maiden name is not offensive, careless, inappropriate, or ridiculous.
1. What do we know about giving middle names in Scotland?A.It needs to be based on their family roots. |
B.It's opposed by the elderly in the country |
C.It mainly describes a baby's appearance. |
D.It didn't become common until not long ago |
A.Showing family roots. |
B.Showing their unique culture. |
C.Describing a physical characteristic. |
D.Allowing people to have different names |
A.They usually have the same ending. |
B.They're usually very creative names. |
C.They're usually difficult to remember. |
D.They're based on their father's middle name. |
A.Avoiding a middle name. |
B.Avoiding registering baby names. |
C.Using the mother's proper maiden name. |
D.Using an unusual name for differentiation. |