Some researchers have just _____ a survey of young people s points of view on contractual marriage.
(167)______

Read the following passage and choose the best answer (A, B, C, D):
Hot springs are natural springs which produce warm water. Usually, these springs produce water that is at a temperature above the human body. The water is (1) __________ heated. The water comes from close to the center of the earth. There are hot springs in many places all over the world. Some of these are not so hot and people can bathe in them. However, other hot springs are dangerously hot. If a person tried to (2)___________ a bath, they would be seriously hurt, or they might die. Yangpachen Hot Springs in Tibet are famous example of hot springs. In particular, they are famous (3) _________ they are the highest hot springs in the world. These hot springs are 4,500 meters above sea (4)_______. From these hot springs people can see beautiful views of the Nyainqen Tanggula mountain range. There is a resort there that people can visit. At this resort, there are three hot spring pools that people can use. The natural water in these pools is cooled down so that people can bathe (5)_______ comfort. The original temperature of the water is 70 degrees Celsius or 158 degrees Fahrenheit.

Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
Dear Mr. Castro:
It is my pleasure to (1)------- you that beginning next month, Chrislyn Spano will be Gibson & Dunn’s Real Estate representative in your area. Ms. Spano has been assisting clients in purchasing land and housing in the Bromley area for the last seven years. She is very (2)------- in her field, and we are fortunate to have her in our London office. If you are interested in buying (3)-------, please write to her at cs@gibsondunn.com.
Very sincerely yours,
MARILYN CARR Manager
Gibson & Dunn, London

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 questions:
Overpopulation, the situation of having large numbers of people with too few resources and too little space, is closely associated with poverty. It can result from high population density, or from low amounts of resources, or from both. Excessively high population densities put stress on available resources. Only a certain number of people can be supported on a given area of land, and that number depends on how much food and other resources the land can provide. In countries where people live primarily by means of simple farming, gardening, herding, hunting, and gathering, even large areas of land can support only small numbers of people because these labor-intensive subsistence activities produce only small amounts of food.
In developed countries such as the United States, Japan, and the countries of Western Europe, overpopulation generally is not considered a major caus of poverty. These countries produce large quantities of food through mechanized farming, which depends on commercial fertilizers, large-scale irrigation, and agricultural machinery. This form of production provides enough food to support the high densities of people in metropolitan areas.
A country’s level of poverty can depend greatly on its mix of population density and agricultural productivity. Bangladesh, for example, has one of the world’s highest population densities, with 1, 147 persons per sq km. A large majority of the people of Bangladesh engage in low – productivity manual farming, which contributes to the country’s extremely high level of poverty. Some of the smalleer countries in Western Europe, such as the Netherlands and Belgium, have high population densities as well. These countries practice mechanized farming and are involved in high-tech industries, however, and there fore have high standards of living.
At the other end of the spectrum, many countries in sub-Saharan Africa have population densities of less than 30 persons per sq km. Many people in these countries practice manual subsistence farming; these countries also have infertile land, and lack the economic resources and technology to boost productivity. As a consequence, these nations are very poor. The United States has both relatively low population density and high agricultural productivity; it is one of the world’s wealthiest nations.
High birth rates contribute to overpopulation in many developing countries. Children are assets to many poor families because they provide labor, usually for farming. Cultural norms in traditionally rural societies commonly sanction the value of large families. Also, the governments of developing countries often provide little or no support, financial or political, for family planning; even people who wish to keep their families small have difficulty doing so. For all these reasons, developing countries tend to have high rates of population growth.
(From “Poverty” by Thomas J. Corbett)

What will suffer when there are excessively high population densities?

Rewrite the sentence without changing the meaning
“I must go now,” the father said to us.

Choose the best answer:
When having an optical checkup, I had to look at the ___________ chart.

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 questions:
All men should study, we have to study to (1)_____ our knowledge and develop our intelligence.An educated man can only utilize his bodily strength to work and live. An educated man, (2)_____this strength, still has the faculty of his intelligent brain and good reflection. This intelligence and thought (3)_____ him to help his physical strength to act more quickly and cleverly.In a same profession or work, the educated man differs (4)______ the uneducated considerably. Therefore, intellectual workers have to study, this is a matter of course but manual workers must also again an education. In civilized countries compulsory education has been applied. Everyone must spend seven or eight years to study. From ploughmen to laborers in these (5)_____, no one is unable to read a book or a paper fluently.

Choose the best answer:
Would you mind _______ more clearly, please?

Read the passage below and choose one correct answer for each question.

My family consists of four people.There’s my father whose name is Jan, my mother whose name is Marie, my brother Peter and of course me. I have quite a large extended family as well but only the four of us live together in our apartment in a block of flats. My father is fifty-two years old, he works as an accountant in an insurance company. He is tall and slim, has got short brown and grey hair and blue eyes. My father likes gardening very much as well as listening to music and reading books about political science. His special hobbies are bird watching and travelling.

       Now I’ll describe my mother and my brother. My mother is forty-seven and she works as a nurse in a hospital. She is small and slim, has got short brown hair and green eyes. She likes bird watching and travelling too, so whenever my parents are able to they go some places interesting for nature watching. Since we we have a cottage with a garden they both spend a lot of time there. My brother is sixteen. He is slim and has short brown hair and blue eyes. He also attends high school. He is interested in computers and sports like football and hockey. He also spends a lot of time with his friends.

I have only one grandmother left still living. She is in pretty good health even at the age of seventy- eight so she still lives in her own flat. I enjoy spending time with her when I can. Both my grandfathers died from cancer because they are smokers, which was really a great tragedy because I didn’t get a chance to know them. My other grandmother died just a few years ago. I also have a lot of aunts, uncles, and cousines. The cousine I’m closest to is my uncle’s daughter Pauline. We have a lot in common because we are both eighteen and so we are good friends.

My parents have assigned  me certain duties around the house. I don’t mind helping out because everyone in a family should contribute in some way. I help with the washing up, the vacuuming and the shopping. Of course I also have to help keep my room tidy as well. My brother is responsible for the dusting and the mopping. He also has to clean his own room. Even though my brother and I sometimes fight about who has to do what job, we are still very close. I am also very close to my parents and I can rely on them to help me. My parents work together to keep our home well maintained and it seems they always have some projects or another that they are working on. They respect each other’s opinions and even if they disagree they can always come to a compromise. I hope in the future that I have a family like ours.

What does the writer’s mother look like?

Read the following passage and choose the best answer (A, B, C, D):
During the nineteenth century, women in the United States organized and participated in a large number of reform movements, including movements to reorganize the prison system, improve education, ban the sale of alcohol, and, most importantly, free the slaves. Some women saw similarities in the social status of women and slaves. Women like Elizabeth Cady Stanton and Lucy Stone were feminists and abolitionists who supported the rights of both women and blacks. A number of male abolitionists, including William Lloyd Garrison and Wendell Philips, also supported the rights of women to speak and participate equally with men in antislavery activities. Probably more than any other movement, abolitionism offered women a previously denied entry into politics. They became involved primarily in 20 order to better their living conditions and the conditions of others. When the Civil War ended in 1865, the Fourteenth and Fifteenth Amendments to the Constitution adopted in 1868 and 25 1870 granted citizenship and suffrage to blacks but not to women. Discouraged but resolved, feminists influenced more and more women to demand the right to vote. In 1869, the Wyoming Territory had yielded 30to demands by feminists, but eastern states resisted more stubbornly than before. A women's suffrage bill had been presented to every Congress since 1878 but it continually failed to pass until 1920, 35 when the Nineteenth Amendment granted women the right to vote.
1. With what topic is the passage primarily concerned?

Read the reading below carefully, and then complete it with the best option A, B, C or D given below:
Technology, general term for the processes by (1) _______ human beings fashion tools and machines to increase (2) _______ control and understanding of the material (3) _______. The term is derived from the Greek words tekhnē, which refers to an art or craft, and logia, (4) _______ an area of study; thus, technology means, literally, the study, or science, of crafting. Many historians of science argue not only that technology is an essential condition of advanced, industrial civilization (5) _______ also that the rate of technological change has developed its own momentum in recent centuries.

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 ‌questions‌ ‌from‌ ‌43‌ ‌to‌ ‌50.‌ ‌
There‌ ‌are‌ ‌two‌ ‌basic‌ ‌types‌ ‌of‌ ‌glaciers,‌ ‌those‌ ‌that‌ ‌flow‌ ‌outward‌ ‌in‌ ‌all‌ 
directions‌ ‌with‌ ‌little‌ ‌regard‌ ‌for‌ ‌any‌ ‌underlying‌ ‌‌terrain‌ ‌‌and‌ ‌those‌ ‌that‌ ‌are‌ ‌confined‌ ‌by‌ ‌terrain‌ ‌to‌ ‌a‌ ‌particular‌ ‌path.‌ ‌The‌ ‌first‌ ‌category‌ ‌of‌ ‌glaciers‌ ‌includes‌ ‌those‌ ‌massive‌ ‌blankets‌ ‌that‌ ‌cover‌ ‌whole‌ ‌continents,‌ ‌appropriately‌ ‌called‌ ‌ice‌ ‌sheets.‌ ‌There‌ ‌must‌ ‌be‌ ‌over‌ ‌50,000‌ ‌square‌ ‌kilometers‌ ‌of‌ ‌land‌ ‌covered‌ ‌with‌ ‌ice‌ ‌for‌ ‌the‌ ‌glacier‌ ‌to‌ ‌
qualify‌ ‌as‌ ‌an‌ ‌ice‌ ‌sheet,‌ ‌when‌ ‌portions‌ ‌of‌ ‌an‌ ‌ice‌ ‌sheet‌ ‌spread‌ ‌out‌ ‌over‌ ‌the‌ ‌ocean,‌ ‌they‌ ‌form‌ ‌ice‌ ‌shelves.‌ ‌
About‌ ‌20,000‌ ‌years‌ ‌ago‌ ‌the‌ ‌Cordilleran‌ ‌Ice‌ ‌sheet‌ ‌covered‌ ‌nearly‌ ‌all‌ ‌the‌ ‌mountains‌ ‌in‌ ‌southern‌ ‌Alaska,‌ ‌western‌ ‌Canada,‌ ‌and‌ ‌the‌ ‌western‌ ‌United‌ ‌States.‌ ‌It‌ ‌was‌ ‌about‌ ‌3‌ ‌kilometers‌ ‌deep‌ ‌at‌ ‌its‌ ‌thickest‌ ‌point‌ ‌in‌ ‌
northern‌ ‌Alberta.‌ ‌Now‌ ‌there‌ ‌are‌ ‌only‌ ‌two‌ ‌sheets‌ ‌left‌ ‌on‌ ‌Earth,‌ ‌those‌ ‌covering‌ ‌Greenland‌ ‌and‌ ‌Antarctica.‌ ‌Any‌ ‌domelike‌ ‌body‌ ‌of‌ ‌ice‌ ‌that‌ ‌also‌ ‌flows‌ ‌out‌ ‌in‌ ‌all‌ ‌directions‌ ‌but‌ ‌covers‌ ‌less‌ ‌than‌ ‌50,000‌ ‌square‌ ‌kilometers‌ ‌is‌ ‌called‌ ‌an‌ ‌ice‌ ‌cap.‌ ‌Although‌ ‌ice‌ ‌caps‌ ‌are‌ ‌rare‌ ‌nowadays,‌ ‌there‌ ‌are‌ ‌a‌ ‌number‌ ‌in‌ ‌northeastern‌ ‌Canada,‌ ‌on‌ ‌
Baffin‌ ‌Island,‌ ‌and‌ ‌on‌ ‌the‌ ‌Queen‌ ‌Elizabeth‌ ‌Islands.‌ ‌The‌ ‌second‌ ‌category‌ ‌of‌ ‌glaciers‌ ‌includes‌ ‌those‌ ‌of‌ ‌a‌ ‌variety‌ ‌of‌ ‌shapes‌ ‌and‌ ‌sizes‌ ‌generally‌ ‌called‌ ‌mountain‌ ‌or‌ ‌alpine‌ ‌glaciers.‌ ‌Mountain‌ ‌glaciers‌ ‌are‌ ‌typically‌ ‌identified‌ ‌by‌ ‌the‌ ‌landform‌ ‌that‌ ‌controls‌ ‌their‌ ‌flow.‌ ‌One‌ ‌form‌ ‌of‌ ‌mountain‌ ‌glacier‌ ‌that‌ ‌resembles‌ ‌an‌ ‌ice‌ ‌cap‌ ‌in‌ ‌that‌ ‌it‌ ‌flows‌ ‌outward‌ ‌in‌ ‌several‌ ‌directions‌ ‌is‌ ‌called‌ ‌an‌ ‌ice‌ ‌field.‌ ‌The‌ ‌difference‌ ‌between‌ ‌an‌ ‌ice‌ ‌field‌ ‌and‌ ‌an‌ ‌ice‌ ‌cap‌ ‌is‌ ‌‌subtle‌.‌ ‌Essentially,‌ ‌the‌ ‌flow‌ ‌of‌ ‌an‌ ‌ice‌ ‌field‌ ‌is‌ ‌somewhat‌ ‌controlled‌ ‌by‌ ‌surrounding‌ ‌terrain‌ ‌and‌ ‌thus‌ ‌does‌ ‌not‌ ‌have‌ ‌the‌ ‌domelike‌ ‌shape‌ ‌of‌ ‌a‌ ‌cap.‌ ‌
There‌ ‌are‌ ‌several‌ ‌ice‌ ‌fields‌ ‌in‌ ‌the‌ ‌Wrangell.‌ ‌St.‌ ‌Elias,‌ ‌and‌ ‌Chugach‌ ‌mountains‌ ‌of‌ ‌Alaska‌ ‌and‌ ‌northern‌ ‌British‌ ‌Columbia.‌ ‌Less‌ ‌spectacular‌ ‌than‌ ‌large‌ ‌ice‌ ‌fields‌ ‌are‌ ‌the‌ ‌most‌ ‌common‌ ‌types‌ ‌of‌ ‌mountain‌ ‌glaciers:‌ ‌the‌ ‌cirque‌ ‌and‌ ‌valley‌ ‌glaciers.‌ ‌Cirque‌ ‌glaciers‌ ‌are‌ ‌found‌ ‌in‌ ‌depressions‌ ‌in‌ ‌the‌ ‌surface‌ ‌of‌ ‌the‌ ‌land‌ ‌and‌ ‌have‌ ‌a‌ ‌characteristic‌ ‌circular‌ ‌shape.‌ ‌The‌ ‌ice‌ ‌of‌ ‌valley‌ ‌glaciers,‌ ‌bound‌ ‌by‌ ‌terrain,‌ ‌flows‌ ‌down‌ ‌valleys,‌ ‌curves‌ ‌around‌ ‌‌their‌ ‌‌corners,‌ ‌
and‌ ‌falls‌ ‌over‌ ‌cliffs.‌ ‌

The‌ ‌word‌ ‌“terrain”‌ ‌in‌ ‌paragraph‌ ‌1‌ ‌could‌ ‌best‌ ‌be‌ ‌replaced‌ ‌by____________.‌ ‌

Read the following passage and choose the best answer (A, B, C, D):
Alemur is a unique animal. When you look at a lemur, it might be hard to tell what you are really looking at. With their huge dark eyes and lush fur, lemurs are very cute, but what animal family are they from? Some lemurs look like a cross between a cat and a dog. Some look a little like squirrels, while others resemble monkeys. Why do they look so strange? To answer to this question we need to understand the lemur's history and genetics. In modern biology, lemurs are called prosimians. This means before monkeys. Remarkably, lemurs, monkeys, apes, and humans all share a common ancestor from about 50 million years ago. Monkeys, apes, and humans developed together in one direction. However, lemurs developed differently and slowly because of their geographical location. All lemurs come from the island of Madagascar, located off the east coast of Africa. Madagascar split off from mainland Africa 50 million years ago. It is believed that the first prosimians traveled to Madagascar on floating trees and plants. The prosimians that traveled to Madagascar were isolated from the rest of Africa. Predators, like dogs or cats, did not make it to Madagascar. Since there were no dangerous threats, prosimians did not have to evolve as quickly as other primates did. (primates: any nimal that belongs to the group of mammals that includes humans, apes, and monkeys.) Over time, the original prosimians evolved into lemurs. Lemurs have changed in some ways over those 50 million years, but they are much more similar to our shared ancestor than either humans, monkeys, or apes. Because of this, their bodies and behaviors hold clues about what out common ancestor looked like. Lemurs have four fingers and a thumb on their hands, and five toes on their feet, just like humans do. They have eyes and jaw bones that are similar to humans as well, but they have a wet nose, like a dog. Lemur behavior is also comparable to human behavior, as they live in social groups. Like apes and humans, lemurs travel together, groom one another, fight each other, and play together. Lemurs, however, have simpler friend and family relationships. Recently, lemurs have been studied in captivity. Like their distant chimpanzee and monkey cousins, they can be taught to use tools and to solve complicated problems. The word lemur means ghost. While the name probably comes from their huge reflective eyes and their strange, haunting cries, lemurs are ghosts in a way. They are living ghosts that remind US where we came from, and also give US clues about how humans evolved.
9. Why does the writer mention a cat, a dog, squirrels, and monkeys in paragraph 1 ?

I ____ come to the conclusion that nowadays nobody cares about anything.

(202)______

Choose the best answer:
I find cooking in my free time relaxing.

Choose the best answer:
Ba always ____________ the homework before going to class.

Read the passage below carefully, and then choose the best answer:
Incredible Shrinking Microchips
There is a popular old saying that “bigger is better”. Although this may be true in some regards, the exact opposite often applies in technology. As electronic components get smaller, it allows companies to manufacture tinier devices with more features. Thus began the never-ending quest to create the smallest microchips on the planet. Yet as these vital electronic components get smaller, they are also getting stronger and clever inventors are finding new ways in which to use them to do incredible things. Currently, the biggest limitation microchip producers face when trying to reduce chips’ size is the copper wires that provide electrical current throughout the chip. Although they can be made smaller, this can cause a whole host of problems such as melting and overheating. Thanks to the work of a few scientists from the UK though, this problem may soon be a thing of the past. Their solution is getting rid of the copper wiring altogether and using carbon nanotubes instead. Not only would this allow for smaller sizes but it would also increase the power that microchips can generate. In the end, this would translate into smaller and more powerful devices much to the delight of consumers all over the world. Corporate powerhouse Intel® has announced plans to create a line of tiny, low power chips that can be used in bracelets, smart watches, and other tiny devices. The chips will be called Intel® Quark, and they are being designed primarily to fit in biomedical devices. A key selling point to biomedical technology is that the devices have to be nonintrusive because people don’t want to carry around heavy equipment to monitor their health. If they can do this, Intel® will likely find several tablet and smartphone manufacturers who are willing to corporate Quark microchips into their devices. In a somewhat unusual project, researchers are working on a special microchip that will serve as miniature human organs in experiments. These “organ” chips could be used to test different medicines and study diseases. If realized, the technology could put an end to the use of lab mice and other animals for testing. Everyone from the largest pharmaceutical companies to the US military has shown interest in the project. Currently, the research team in charge of the project believes that within five years the organ chips will be used in practical research. It goes to show that thinking small often produces the biggest results.
6. What best matches the meaning of the word “nonintrusive” in paragraph 3?

Read the passage below carefully, and then choose the best answer:
Clean, Convenient, and Cheap
Big cities like New York and London have a lot of great things. They have museums, parks, shopping centres, and a huge variety of restaurants. However, there are a lot of annoying things in big cities. The most common problems are air pollution and noise. Traffic is the main cause of air pollution and noise. For example, drivers in New York are famous for honking their horns and shouting. That noise drives many visitors crazy – it even drives a lot of the locals crazy, too. Other big cities have similar problems with their traffic. City governments have a lot of pressure to solve these problems. The most common solution is public transportation. Public transportation is a form of travel provided by the government. For example, New York’s biggest form of public transportation is the subway. Public transportation helps reduce these problems, but it is not enough. Another solution is bicycle sharing. This is a system that provides cheap bicycles. In cities that have bicycle sharing programmes, there are spots that have parked public bikes. People borrow the bikes and use them. They can _drop off_ the bike at the same spot where they borrowed it, or they can drop it off at another spot. Bicycle sharing programmes are different in each city. In some cities, the bikes are completely free. They are not even locked. In other cities, you have to pay a small deposit. You get the deposit back when you return the bike. In still other cities, you need to have a membership with the bicycle sharing programme. Once you have a membership with the bicycle sharing programme, you can use a bike at any time you want. Bicycle sharing is hugely popular all over the world. People love this system because it is cheap, clean, and easy to use. There are bicycle sharing systems in dozens of countries and hundreds of cities. In total, there are more than 530 bicycle sharing systems around the world, and that number is going up all the time.
1. Which statement is true according to the passage?

Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions:
Telecommunicating is a form of computer communication between employees’ homes and offices. For employees whose jobs involve sitting at a terminal or word processor entering data or typing reports, the location of the computer is of no consequence. If the machine can communicate over

telephone lines, when the work is completed, employees can dial the office computer from a distant site and transmit the material to their employers. A recent survey in USA Today estimates that there are approximately 8.7 million telecommuters. But although the numbers are rising annually, the trend does not appear to be as significant as predicted when Business Week published "The Portable Executive" as its cover story a few years ago. Why hasn't telecommuting become more popular?
Clearly, change simply takes time. But in addition, there has been active resistance on the part of many managers. These executives claim that supervising the telecommuters in a large work force scattered across the country would be too difficult, or, at least, systems for managing them are not yet developed, thereby complicating the manager's responsibilities.
It is also true that employees who are given the option of telecommuting are often reluctant to accept the opportunity. Most people feel that they need regular interaction with a group, and many are concerned that they will not have the same consideration for advancement if they are not more visible in the office setting. Some people feel that even when a space in their homes is set aside as a work area, they never really get away from the office.

When Business Week published “The Portable Executive”, it implied that .

Read the following passage and choose the best answer (A, B, C, D):
Rain pounded down on the roof. I was trying to read but the sound was too loud. I couldn’t help myself from being a little grumpy. I wanted to be outside playing, but the rain was keeping me inside. My mom had gone to the grocery store, and my dad was spending Saturday at the office. I had planned to spend the day hiking, but Mother Nature decided that today was the perfect day for rain. It meant that I would have to entertain myself. I spent most of the morning playing with my stuffed animals and reading. I was sitting next to the window staring out when I got a strange idea: why not just go outside anyway? I put on my boots and a big raincoat and stepped out into the wet world. It was raining hard but it wasn’t cold. All I could hear were raindrops and the wind. I decided to go on my hike anyway. My feet didn’t make any sound on the wet ground and the forest seemed different. I went to my favourite place and sat down. In the summer, my best friend Ellen and I would come here and sit for hours. It was our special place. All of a sudden, I thought I heard someone shouting my name. I turned and saw Ellen walking up behind me. “Oh my Gosh! It’s really you, Martha!” she said. “I can’t believe that you are out here right now. I thought I would be the only person crazy enough to go for a walk in the rain.” I was very happy to have some company. We decided that hiking in the rain was just as fun as hiking in the sunshine. We planned on hiking in the rain again.
7. What will Martha and Ellen probably do next time it rains?

Read the following passage and choose the best answer (A, B, C, D):
Some technological developments are the results of years of diligent work. Others are stumbled upon by accident. The discovery of X-rays is in the second category. In 1895, X-ray radiation was accidentally discovered by a physicist named Wilhelm Rontgen, while he was working in his lab. Rontgen discovery greatly advanced medical science. One night in 1895, Wilhelm Rontgen was working with an electric device called a Crookes tube. A Crookes tube is a glass tube with metal components inside it. When turned on, the tube produces a stream of electrons. Rontgen and other scientists observed a new form of energy escaping from the front end of the Crookes tube. Rontgen wanted to be the first to discover this new mysterious energy. To do this, he needed to make sure the tube was covered with black cardboard. This would make the room completely dark and allow him to better see this new form of energy. Rontgen was hoping to observe this new energy on a special screen that would be placed right in front of the Crookes tube. Amazingly, before the screen was placed near the Crookes tube, Rontgen already noticed the screen was glowing. He bought the screen closer, and the glow became brighter. (1) He then placed a book between the end of the tube and the screen-the glow was still there. (2) Rontgen realized that a new and different form of radiation must be causing the screen to glow. (3) As he didn't know what kind of radiation it was, he named it "X". (4) Rontgen soon started studying the new type of radiation. He designed experiments which allowed him to test how far X- rays could penetrate. He also had the bright idea of trying to take photographs with X-rays. One day, he tested his theories by asking his wife to put her hand between a photographic plate and a Crookes Tube. Sure enough, the resulting image of the bones in his wife's hand was the first ever X-ray photograph of the human body. After taking that first photograph, Rontgen understood how X-rays could benefit doctors and patients. He shared his discovery, and soon X-ray machines were appearing in hospitals. X-rays were very useful for medicine because they let doctors see a patient's bones. If a patient had a broken bone, it was made visible by the X-ray image. This let doctors know the right way to repair the fracture. Wilhelm Rontgen's accidental discovery has now been helping people for over one hundred years. Thanks to X-rays, broken bones can be repaired reliably and effectively. We should be grateful to Wilhelm Rontgen for making his discovery freely available and greatly advancing medical science. Because of this, we humans are able to live longer, healthier lives.
1. What was Wilhelm Rontgen's job?