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calibration-knowledge

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[ { "content": "Astronomers recently found another ring around the planet Saturn -- and it's the biggest one yet. This newly discovered ring stretches about 15 million miles across, which makes a loop big enough to fit a billion Earths inside. It may be even bigger and reach 22 million miles across at its diame...
[ { "content": "Most people agree that it's important to have a sense of humor. Having the ability to laugh can help one overcome anxiety, and make better decisions in difficult situations. People with a well-developed sense of humor appear to be happier, and some are healthier as well. This suggests that having ...
[ { "content": "Mountain lions live in mountainous areas of the western prefix = st1 /United States. Lately, however, people have reported seeing them in quiet neighborhoods all across the country! Usually considered shy and seldom seen, these lions are becoming more noticeable. In addition, the lions appear to b...
[ { "content": "\"Life is speeding up. Everyone is getting unwell.\" This may sound like something someone would say today. But in fact, an unknown person who lived in Rome in AD 53 wrote it. We all love new inventions. They are exciting, amazing and can even change our lives. But have all these developments rea...
[ { "content": "When an ant dies, other ants take it out of the nest, often within an hour after its death. This behavior interests scientists and they wonder how ants know for sure--and so soon--that another ant is dead. One scientist recently came up with a way to explain this ant behaviour. Dong-Hwan Choe is a...
[ { "content": "True Manliness \"Please, mother, do sit down and let me try my hand,\"said Fred Liscom, a bright active boy, twelve years old. Mrs. Liscom, looking pale and worn, was moving languidly about, trying to clear away the breakfast she had scarcely tasted. She smiled and said, \"You, Fred, you wash...
[ { "content": "The pull of gravity on Earth is a direct result of the\n\nChoices:\nA. mass of Earth.\nB. magnetic field of Earth.\nC. rotation of Earth on its axis.\nD. weight of Earth's atmosphere.", "role": "user" }, { "content": "A. mass of Earth.", "role": "assistant" } ]
[ { "content": "Bored? Don't know what to do with your time? Get your friends or family together, go to the park or go hiking, do something fun --just don't turn on your TV. The 10th annual TV-Turnoff Week starts on Monday. The TV-Turnoff Network, a nonprofit organization, began the program in 1994 to get childre...
[ { "content": "I'm an English girl. My name is Rose White. I'm short but my hair is long. I have a round face and my mouth is small. Now I'm a student in No. 5 High School. I have a good friend. Her name is Liu Xing. We are in the same class. She is from China. She has big eyes. But her mouth is small. ,. Liu Xi...
[ { "content": "I'm Ann. I am twelve. My birthday is on May 11th. I am a student. I am in No. 3 middle School. I have a good friend. Her name is Alice. She is twelve, too. We are not in the same class. We have the same English teacher. Her name is Monica. We all like her. Kate is Alice's sister. Oh, today is Nov...
[ { "content": "One night last February, a seventeen-year-old Duffy drove home along a winding road, he saw a strange light thrown against the tree. \"I knew it wasn't the moon\", he said. \"I drive this road all the time and I notice little things out of place.\" Duffy stopped his car and got out to examine. Bel...
[ { "content": "The famous director of a big and expensive movie planned to film a beautiful sunset over the ocean, so that the audiences could see his hero and heroine in front of it at the end of the film as they said goodbye to each other for ever. He sent his camera crew out one evening to film the sunset fo...
[ { "content": "Before summer ends, you might want to consider reading The Shaping of A Christian Home by Elizabeth Elliot. She writes beautifully of her family summer cottage in Franconia, Maine. She mentions that every family should have a place to get away together. The summer of my fourteenth year, Dad...
[ { "content": "Today, Anne is hungry. She wants to eat somewhere in town. There is a popular diner in town. She goes there and asks them if she can get fries and a chocolate milkshake. Her friends come into the diner and sit with her. Their names are Jane, Jake and Dave. All of them are 15 years old. Jake get...
[ { "content": "With only about 1, 000 pandas left in the world, China is desperately trying to clone the animal and save the endangered species . That's a move similar to what a Texas A & M University researchers have been undertaking for the past five years in a project called \"Noah's Ark\". Noah's Ark is aim...
[ { "content": "Mrs Smith is going shopping with her son.They are looking for presents for Mr Smith's birthday.They drive to the shop mall on Baker Street. Mrs Smith goes to the Electrical Shop on the third floor. When the woman gets to the counter,she finds the camera she wants to buy is sold out.She finds anot...
[ { "content": "Mr. Zhang, our geography teacher, held a map of the world and asked us where we would like to travel. Li Ming said, \"I like countries with an interesting history, such as China, Egypt, Greece and Italy. They are all old countries with a long history. You can see many old buildings in these countr...
[ { "content": "Parents should stop blaming themselves because there's not a lot they can do about it. I mean the teenager problem. Whatever you do or however you choose to deal with it, at certain times a wonderful, reasonable and helpful child will turn into a terrible animal. I've seen friends deal with _ in a...
[ { "content": "I believe you can do your best. Not being the best but toughing the limits of what you're capable of. I gained this belief from my third grade teacher, the most special, honored, trustworthy, and loved person in my life. Mr. Myrus was always perfectly dressed and spoke with the belief that talking...
[ { "content": "In Japan, Luffy is more popular than Harry Potter.Luffy is the main _ of One Piece .The book came out in 1997. One Piece tells the adventures of Monkey D.Luffy, a 17-year-old boy.He gets supernatural abilities by eating fruit.Luffy's dream is to find the world's biggest treasure, One Piece.Then he...
[ { "content": "Whenever we turn on the TV or radio, read the newspapers, surf the Internet, we'll be surrounded by the word \"diet\" everywhere. We have so easily been attracted by the promise of diet products that we have stopped thinking about what diet products are doing to us. We are paying for products that...
[ { "content": "In just two months, the latest buzzword from the Internet, diaosi, has spread so much that it can be found everywhere--from online forums to micro blogs. Many people even call themselves diaosi. It's not the first time a term has gone popular on the Internet in China. However, why is the word so ...
[ { "content": "Not everyone can sit around and daydream while twirling hair or worrying about how they are going to style it for school pictures or a special event. Some kids have no hair at all due to illness. Locks of Love is an organization that helps kids deal with their hair loss by providing real hair wi...
[ { "content": "Mr Smith likes to be exact . One day when he is walking in the street ,a woman comes and asks him, \"Excuse me, where's the nearest bookshop?\" \"The nearest bookshop? You have to cross a bridge and then turn to the right. When you see a post office, turn left. You can see a shop between a bank an...
[ { "content": "I have spent almost a third of my life in China, living and working in this beautiful country. In a sense, China has been and is still my second home But in those past years I had never been to Quzhou. Some days ago, for the first time in my Chinese life, I stepped into the beautiful city of Quzho...
[ { "content": "Decision-making under Stress A new review based on a research shows that acute stress affects the way the brain considers the advantages and disadvantages, causing it to focus on pleasure and ignore the possible negative consequences of a decision. The research suggests that stress may change th...
[ { "content": "Recently a man came to me, because he was told that there is fluid around his heart. After trying many drugs which were of no use to reduce the fluid, the doctor told him the only other choice was to have an operation. He refused because he knew that every illness has a mental cause and that if h...
[ { "content": "Everyone has a dream. Some are good dreams. Some are bad dreams. Here are some kids talking about their dreams they had last night. Lucy: In my dream, I saw my favorite band EXO singing a wonderful song. One of the main singer Lu Han wore special clothes and sang songs only for me. The songs were ...
[ { "content": "We can not live a modern life without traveling. The fastest way of traveling is by air. With a plane one can travel in one day to places which it took a month or more to get to a hundred years ago. Traveling by train is slower than by plane, but one can see the country he is traveling through. Mo...
[ { "content": "The deep sea is one of the most mysterious places on earth. Scientists rarely go there. Those few do discover new species all of the time. Many places of the deepest parts of the ocean, where it's forever dark, can light up. Now, a teen's research has shown new light on how one of these swimming a...
[ { "content": "Can it be true that Australian men spend more time during the week brushing their teeth than they do alone with their children? A new study from the University of the New South Wales has discovered that during the working week, Aussie fathers only spend an average of just over a minute each day al...
[ { "content": "It was a hot summer day. My dad and I were getting ready to go out for a ride on the boat with my friend Katie and the dog when the phone call came, the call that made that bright, beautiful day a cold, dark, gloomy one. I had just put on my suit, shorts, and tank top, and packed my bag with sunsc...
[ { "content": "Tina was not like many of her classmates. She didn't listen to popular music or watch many movies, and she wasn't interested in nice clothes. When she got together with her friends, they wanted to listen to rock and pop music. When Tina asked if they would like to try classical music, they...
[ { "content": "An example of weathering is\n\nChoices:\nA. sand\nB. sharp boulders\nC. tall trees\nD. coral reefs", "role": "user" }, { "content": "A. sand", "role": "assistant" } ]
[ { "content": "It was Monday. Mrs Smith's dog was hungry, but there was not any meat in the house.Considering that there was no better way, Mrs. Smith took a piece of paper, and wrote the following words on it \"Give my dog half a pound of meat. \" Then she gave the paper to her dog and said gently:\" Take ...
[ { "content": "At Christmas,1871,Edison,the famous American scientist,got married to Mary. Lots of their friends came to their wedding ceremony . At about two in the afternoon,Edison suddenly thought out a good way to solve the problem on the automatic telegraph after the wedding. So he said to the bride ,\"I'll...
[ { "content": "The Best Shopping In Sydney Sydney is one of the world's biggest cities and has something for everyone when it comes to shopping. You will find excellent Australian products alongside the best that the world has to offer. At the bottom of Sydney Tower, you can shop in 160 of Sydney's favorite stor...
[ { "content": "The ratio of an object's mass to its volume is its\n\nChoices:\nA. area.\nB. perimeter.\nC. density.\nD. weight.", "role": "user" }, { "content": "C. density.", "role": "assistant" } ]
[ { "content": "A bowling ball with a mass of 8.0 kg rolls down a bowling lane at 2.0 m/s. What is the momentum of the bowling ball?\n\nChoices:\nA. 4.0 kg x m/s\nB. 6.0 kg x m/s\nC. 10.0 kg x m/s\nD. 16.0 kg x m/s", "role": "user" }, { "content": "D. 16.0 kg x m/s", "role": "assistant" } ]
[ { "content": "Las Vegas cab driver Gerardo Gamboa thought someone must have left a bag of chocolates in the back seat of his vehicle,but it turned out to be $300,000 in cold hard cash. Now,Gamboa is winning honors for honesty after turning in the money he found Monday.The money was returned to an unidenti...
[ { "content": "The following is the story of a SARS patient named Wang and his fight with the disease. I woke up around 6 : 30 this morning, on my ninth day in hospital since I caught SARS. Glancing over at my roommate, Xiao Huang, a 27-year-old employee of a Beijing software company, I saw he was also awake. Af...
[ { "content": "In the traditional marriage, the man worked at a job to earn money for the family. Most men worked in an office, a factory, or some other place away from the home. Since the man earned the money, they paid the bills. The money was used for food, -clothes, the house, and other family needs, the man...
[ { "content": "If you do not use your arms or your legs for some time, they will become weak; when you start using them again, they will slowly become stronger again.Everybody knows that .yet many people do not seem to know that memory works in the same way.When someone says that he has a good memory, he really...
[ { "content": "Reading is a good hobby for all kinds of reasons. First, reading is fun. You can always keep yourself happy if you like reading. You will never feel bored or tired. Next, you can read a book anywhere-- in a car, on a plane, or even in the bathroom. All you need is a book! Another good reason for r...
[ { "content": "Every year we have many holidays, such as summer holidays. May Day and so on. How do you spend during these holidays? Do you like to travel during them ? Can you book holidays or make travel plans on line? Now let me tell you how to do it. First,you should look up the places that you want to visit...
[ { "content": "At the end of my senior year of high school, I got a job working at a local coffee shop.I thought the job would be easy and stress-free.I pictured myself pouring the best coffees, making delicious doughnuts , and becoming friends with regular customers. I wasn't expecting the people with enormous...
[ { "content": "A good joke can be the hardest thing to understand when studying a foreign language. As a recent article in The Guardian newspaper noted, \"There's more to understanding a joke in a foreign language than understanding vocabulary and grammar.\" Being able to understand local jokes is often seen as...
[ { "content": "On a Saturday morning earlier this September, the world got its first look at the Strati. This electric vehicle is unlike any other currently on the road. It rolls on four wheels, but its body and chassis weren't built in a factory. Instead, Strati's designers used a technology called 3-D printin...
[ { "content": "Scientists are learning new things about Antarctica, the coldest place on Earth. For example, the Antarctic ice sheet is shrinking. A new study found that summer ice loss in parts of Antarctica was at its highest level in 1,000 years. The study showed that Antarctic ice was melting mostly from bel...
[ { "content": "Computer games have been criticised for quite some time over a whole range of issues. Some people say they are overly violent and encourage violent behaviour particularly in children. Others say that they make children unsociable and are bad for their eyes. Some have even attributed falling standa...
[ { "content": "A sure way to destroy your chances of learning how to write skillfully is to believe that writing is a \"natural gift\" rather than a learned skill. People with such an attitude think that they are the only ones for whom writing is unbearably difficult. They feel that everyone else finds writing e...
[ { "content": "Two little children come to a big city. Their names are Mike and Bob. They live with their father and mother. Their family is very rich. They have a driver and lots of servants. Mike and Bob are going to a new school. Their father says to them, \"Mike and Bob, don't say we are rich at school.\" So...
[ { "content": "Here are four of my friends. Get to know them and their interesting experiences. I'm Mark. I'm 12. I have learned a lot about cycling and cycled about two hundred miles with my friends. We all felt very excited. My name is Sam. I'm one year older than Mark. I have entered a competition. At last,...
[ { "content": "Nowadays people are troubled by the violence that spreads throughout the media. Movies, television and video games are full of gunplay and bloodshed, and one might reasonably ask what's wrong with a society that presents videos of violence as entertainment. Viewing large amounts of violent televis...
[ { "content": "Hi! I'm a Chinese girl. My name is Liu Wei. My English name is Sally. I'm twelve. I'm in Class 8, Grade 1. My English teacher is Mr. Lee. He is from New York. He is a good teacher. I don't know how old he is. My good friend is Jane. She is from Canada. She is in Class 8, Grade 1, too. She is eleve...
[ { "content": "Enough \"meaningless drivel\". That's the message from a group of members of the UK government who have been examining how social media firms like LinkedIn gather and use social media data. The House of Commons Science and Technology Committee's report, released last week, has blamed firms for mak...
[ { "content": "We should feel grateful in our heart when we accept anything others sacrifice for us. However, we often unconsciously do the opposite, which may not be regarded as returning kindness with ingratitude, but have the equal power to harm each other. In particular, the closer the relationship is, the m...
[ { "content": "The sharing economy has grown in recent years to include everything from apartment sharing to car sharing to community tool sharing. Since 2009, a new form of sharing economy has been emerging in neighborhoods throughout the US and around the world---- Little Free Library. The libraries are boxes ...
[ { "content": "Plants need green leaves to make food. A plant needs sunlight and carbon dioxide from the air for making food and it also needs water and salts from the soil to make food too. There are certain cells in the leaves which change carbon dioxide and water into sugar. To do this the cells needs ener...
[ { "content": "Families come in many shapes and sizes-they can be just two people, or hundreds of aunts, uncles and cousins. Every family is different, and what makes a family is different for everyone. Families don't even have to be related -some families are formed by choice. For this contest, draw us a pictur...
[ { "content": "How do you get across a river? A bridge is the best way. In some places, there are no bridges. People use the ferry . A ferry is a boat that takes people and cars across the river. Both ends of a ferry look the same. The ferry never has to turn around. It docks at one side of the river. People and...
[ { "content": "Vitamin D helps bones and muscles grow strong and healthy. Low levels of vitamin D can lead to diseases such asrickets , mainly found in children. The thinning of bone is a common problem as people, especially women, get older. But more and more research is suggesting that vitamin D might also hel...
[ { "content": "If you go to England, you may want to visit Big Ben. Big Ben is not the name of a man but a name of the clock in London. It has a long history of about 150 years. It is at the north end of the Palace of Westminster . The big clock has four faces. So you can read the face of the chock everywhere.Th...
[ { "content": "The Internationa1 Space Station allows astronauts to live in space for extended amounts of time, enabling them to explore the outside universe and conduct many experiments. However, nothing like that exists for our oceans, and thanks to the high water pressure, ocean researchers are able to explor...
[ { "content": "Yao Beina was not only a popular singer but also an energetic and warm-hearted angel. She donated her corneas to two men after her death. Yao was born in a music family in September 1981 in Wuhan. She started to learn music at the age of 4, and she sang her first song on the stage when she was ...
[ { "content": "Football is America's most popular sport, and by football I don't mean soccer. American football is a unique sport with its own rules, regulations, and fans. Being a football fan means something different than being a fan in other sports; football fans have their own culture and customs. Since fo...
[ { "content": "Astin left her car at Garrison's Garage to have repair work done. After completing the repairs, Garrison took the car out for a test drive and was involved in an accident that caused damages to Placek. A statute imposes liability on the owner of an automobile for injuries to a third party that are...
[ { "content": "Spring is an inviting season for outdoor activities. But be careful--the warm weather is also a hotbed for viruses and disease. This March, the influenza A(H7N9) virus hit Shanghai, Anhui, Jiangsu and Zhejiang. It was reported that by April 11 at least 35 people had been infected with the H7N9...
[ { "content": "MSF stands for Medicines Sans Frontiers. It's also known as Doctors Without Borders . Medicines Sans Frontiers is French. This organization was set up by some French doctors in 1971. Since then, MSF has sent trained doctors all over the world to help people who have suffered from disasters, such ...
[ { "content": "Some scientists have suggested that it might in some cases be ethically acceptable to clone existing people. One possibility is generating replacement for a dying . All such possibilities, however, raise the concern that the clone would be treated as less than a complete individual, because he o...
[ { "content": "There is a sign at a Korean university asking tourists not to step into the grass to take photos. The sign is not written in Korean or English; it is written in Chinese. These signs, and signs in other countries warning Chinese tourists about their behavior, have shamed many Chinese who worry abou...
[ { "content": ". As the world's largest terrestrial carnivore ,the polar bear is the king of the great white north. Adult males can measure more than 9 feet in length and weigh between 770 and 1,430 pounds. The bear's body and neck are elongated, and the head is narrow and long with small, rounded ears. Po...
[ { "content": "Why do men live a shorter life than women? The latest research indicates that men's hearts going into a rapid decline when they reach middle age could be the cause. The research of ageing on the heart has shown that women's _ may be linked to the fact that their hearts do not lose much pumping pow...
[ { "content": "Welcome to the future. It's year 2050 and Scotland is now powered completely by\"clean\"energy. Homes have entire roofs made of solar materials, rooms are kept warm by wallpaper, and people go to and from work in electric and hydrogen( ) cars. Oil is still being found in the North Sea, but it's no...
[ { "content": "Since IQ testing began a century ago, women have been as much as five points behind, leading psychologists to suggest genetic differences between the male and the female. That gap has been narrowing in recent years and this year women have moved ahead. The finding has been made by James Flynn, a w...
[ { "content": "At present, too much carbon dioxide makes the earth warmer and warmer and causes terrible effect to human beings. To save our planet, to save ourselves, a new lifestyle called low-carbon life becomes popular. Low carbon means low energy and no waste. It is necessary for everybody to learn to liv...
[ { "content": "Nancy is an English school girl. She studies in a middle school. She has a little brother. His name is John. John is only four. Nancy likes him very much. Today is Sunday. Nancy wants to do her homework. She takes out her pencil-box and opens it. \"Oh, dear! Where's my pen?\" She can't find her pe...
[ { "content": "Moscow Sheremetyevo International Airport If You've Lost Personal Belongings *On Board --Contact the airline's representatives *At the Airport --Contact: --Sheremetyevo Police Department ......+7(495)578-22-55 --Unclaimed luggage storage room in Terminal C ......+7(495)578-23-26 --Uncl...
[ { "content": "Joanne \"Jo\" Rowling was born on 31 July 1965, pen name, is a British novelist, best known as the writer of the Harry Potter books. The Harry Potter books are world famous. People bought more than 400 million copies. They have become the best-selling book series in history.Rowling finished the fi...
[ { "content": "M: Hi, Ann! Tomorrow will be August 1st. When is your holiday going to start? W: Very soon. I'm going to leave the day after tomorrow. M: How long are you going to be away? W: About two weeks. M: Where are you going? W: I'm going to the beach this time. M: Are you going to stay alone? W: No. I wil...
[ { "content": "Oleksander Pylyshenko is either very fearless,very foolish... or both. The 40-year-old zookeeper from the Ukraine recently spent five weeks in a cage with Katya, a 200-kilo African lioness. Why? Well for a start, he wanted to raise awareness of the treatment of animals in captivity. Secondly, he h...
[ { "content": "If you come to Beijing, there are many interesting places to go. Lao She Teahouse is one of them. People built Lao She Teahouse in 1988. It is a special place in Beijing to show the life of old Beijing people in old times. It got its name from the famous writer ----Lao She. 'Remembering the past' ...
[ { "content": "Cars are an important part of life in the United States. Without cars most people feel that they are poor. And even though a person is poor, he doesn't really feel poor when he has a car. Perhaps you have heard of Henry Ford. He first started making cars in large numbers. Perhaps he didn't know h...
[ { "content": "I became a stand- up comic at 12:45 yesterday afternoon when I walked onto a comedy club stage and did a \"bit\". It was an audition in which people had exactly two minutes each to perform for a producer. I am not a comic, have never appeared onstage, am awkward before many people, and have no...
[ { "content": "In traditional Chinese medicine, the body, mind and spirit cannot be divided and so the unique whole-body treatment in Tui Na can also be a useful treatment correcting any imbalances in the body's energy before symptoms and disease can develop. It also works to bring back emotional peace as well a...
[ { "content": "Germany's mystery English-speaking \"forest boy\" is said to be having trouble adjusting to conventional life. Source close to the case claim he is having difficulty sleeping in a proper bed and wants to return to the wild. Other creature comforts , such as soap, hot showers, and running water,...
[ { "content": "He was 11 years old and went fishing every chance he got from the dock at his family's cabin on an island in the middle of a New Hampshire lake. On the day before the bass season opened, he and his father were fishing early in the evening, catching sunfish and perch with worms. Then he tied on a s...
[ { "content": "\"Avoid the rush hour\" must be the slogan of large cities all over the world. Wherever you look it's people, people, people. The trains which leave or arrive every few minutes are packed. The streets are so crowded; there is hardly room to move on the pavements. It takes ages for a bus to get to ...
[ { "content": "They found that young people who often use social media are more likely to suffer from sleep disorders than those who use social media less. The researchers set out to examine the connection between social media use and sleep among young adults. Levenson, who led the study, noticed that these youn...
[ { "content": "According to a new survey, students' safety has become a big problem. Nearly 50% of students say they are worried about robbery on the way to and from school. Now in main big cities in China, some schools have taught an unusual lesson: self-protection. Students like this lesson because there are n...
[ { "content": "It might not come as a surprise that China fell behind Western countries in a recent UN report on global happiness. China was only ranked 112th happiest country out of 156 in the UN's World Happiness Report in April. The happiest country, it seems, is Denmark, closely followed by three more northe...
[ { "content": "Mrs Green lives in a small village . Her husband is dead ,but she has one son .His name is Jack . He is twenty-one .He worked in the shop in the village and lived with his mother , but then he found a job in a faraway town named Green Sea .He went and lived there .Mrs Green was not happy about it ...
[ { "content": "Robert Kohout, 39, was working outside his home last October when he heard a frightening noise. He turned round and saw Walter Graham's car sinking into 8 feet of water of the inground swimming pool a little distance away from his yard. Kohout immediately called to Graham's wife, Evelyn, to phone ...
[ { "content": "More and more people are trying to learn English than any other language in the world. English is the world language of politics and international business. It becomes the international language of science, medicine, sports, travel and so on. In most schools in Asia, English is taught as the main ...
[ { "content": "Wang Lin's Diary Oct.8th,Sunday October 1st is our National Day.It was Sunday.In the morning,our teacher took us to the park.Oh,many people were there.We could see flags and flowers everywhere.We saw people dancing in the park everywhere.We had a good time. This morning I did some cleaning.Then I...
[ { "content": "Experiments aboard the spaceship Columbia have disproved a theory on the human nervous system which won an Austrian professor a Nobel prize 79 years ago. West German astronaut Ulf Merbold disproved the theory during tests aboard the spaceship yesterday. His discovery is connected with the workings...
[ { "content": "Charles Dickens (1812-1870), the great nineteenth century English novelist, was born near Portsmouth. His father ran heavily into debt and when he was twelve, he had to go and work in a factory for making boot polish. The only formal education he received was a two-year schooling at a school for p...
[ { "content": "Now and then we all get ill. Then we usually go to see a doctor. Doctors know a lot about what makes us ill. They may give us something to take. The medicine often makes us well again. But sometimes the doctor's medicine doesn't work. A sick person does not get well. The pain doesn't go away. Ther...
[ { "content": "People in cities all over the world shop in supermarkets. When you enter the supermarket, you see shelves full of food. You walk in the aisles, pushing your shopping cart. You probably hear soft, slow music in the supermarket. This kind of music is playing to relax you and make you walk slowly. Th...
[ { "content": "It doesn't matter when or how much a person sleeps, but everyone needs some rest to stay alive.That's what all doctors thought, until they heard about Al Herpin.Al Herpin, it was said, never slept. Could this be true? The doctors decided to see this strange man themselves. Al Herpin was 90 years ...