Humans have struggled against weeds since the beginnings of agriculture. Marring our gardens is one of the milder effects of weeds - any plants that thrive where they are unwanted. They clog waterways, destroy wildlife habitats, and impede farming. Their spread eliminates grazing areas and accounts for one-third of all crop loss. They compete for sunlight, nutrients, and water with useful plants.
The global need for weed control had been answered mainly by the chemical industry. Its herbicides are effective and sometimes necessary, but some pose serious problems, particularly if misused. Toxic compounds threaten animal and public health when they accumulate in food plants, groundwater, and drinking water. They also harm workers who apply them.
In recent years, the chemical industry has introduced several herbicides that are more ecologically sound. Yet new chemicals alone cannot solve the world’s weed problems. Hence, scientists are exploring the innate weed-killing powers of living organisms, primarily insects and microorganisms.
The biological agents now in use are environmentally benign and are harmless to humans. They can be chosen for their ability to attack selected targets and leave crops and other plants untouched. In contrast, some of the most effective chemicals kill virtually all the plants they come in contact with, sparing only those that are naturally resistant or have been genetically modified for resistance. Furthermore, a number of biological agents can be administered only once, after which no added applications are needed. Chemicals typically must be used several times per growing season.

Which of the following terms does the author define in the first paragraph?

 

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.

As Australia's largest and oldest city, Sydney carries many traces of its history. Time seems to stand still in the city's old streets and in its many magnificent, ancient buildings, such as the Sydney Town Hall, the Queen Victoria Building, and St. Mary's Cathedral. To explore the city's present and past, head for The Rocks the oldest neighbourhood in Australia and Sydney, where sandstone houses built in the 18th century still stand. You can stroll through the pretty streets, visit a traditional pub for some craft beer, and try delicious local dishes.

Sydney is blessed with natural gifts that few cities can rival. This city is full of greenery. Parks and nature reserves mingle with urban areas. Thanks to this, you need not travel far to see rare species in numerous city zoos; or enjoy fresh air and a range of plants from all corners of the world, all gathered in boundless parks. For those visitors keen to explore the sea, Sydney is heaven with over 70 spectacular bays and beaches. These include beautiful Bondi Beach, which is said to be the loveliest on the planet, where visitors can sunbathe, and play various water sports.

Sydney is said to be a miniature world of attractions, captivating visitors. It is a must-go destination on every tourist's bucket list, should they visit the beautiful land of Australia.

(Adapted from Heritage)

The word “These” in paragraph 2 refers to ________.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrases that best fits each of the numbered blanks.
Parents and teachers are always smaking (31)________ between the time when they were children and the present generation . They say everything was better than it is today, especially ineducation. (32)________ , they say they used to work much harder in school, and that nowadays, we aren't  very interested. I disagree, because we spend hours every day doing homework after our lessons or (33)________ for exammination. I wonder (34)________ our parents really had to study somuch after school every day. In my opinion, it is no exaggeration to say we have forgotten how to play. I think one reason whykids (35)________ in class is because they need to get rid ofstress.
(31).....................

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks
WORKING PARENTS
Reliable studies have shown that children of parents who both go out to work have no more problems than children with one parent staying at home. My personal (36)________ is that both parents should go out  to work if they wish.
Some parents invest so much in a career that they cannot bear to give it up. Others have to work because of
(37)________ necessity. There are several options when it comes to choosing childcare from child minders to the kind neighbour across the street.
No (38)________ how good the childcare maybe, some children protest if their parents aren't around.       Babies become dependent on parents and close family members, (39)________ parents should make sure they allow plenty of time to help their child settle in with their new career.
Remember: if parents want to (40)________ the best for their children, it‟s not the quantity of time they spend with them, it‟s the quality that matters.
(37).........................

Read the following passage and choose the best answer for each blank.

AUDIOBOOKS - BOOKS ON CASSETTE

In the modern world, there is a wealth of leisure activities to choose from. Entertainment industries (26)________ for your leisure time. You can watch TV, listen to music, go to an art gallery or concert or, of course, read a book. Sometimes it seems that reading is (27)________because, even if you're a fast reader, it can take a (28)________amount of time to finish a novel, for example. But in the (29)________world, time is something that can be in short supply. Book publishers haven't been (30)________to realise this and are now selling a product which needn't (31)________as much of your time but still tells you an excellent story. The new product is the audiobook -cassette recordings of shortened novels, often read by well-known personalities or the authors themselves. Audiobooks are (32)________new but people are becoming more aware of them and sales are increasing all the time. One of the attractions of audiobooks is that they're (33)________listening to the radio. You can listen to what you want when you want, and you won't ever (34)________anything. Much of their appeal lies in their flexibility. They (35)________you to do other things while you're listening, such as driving or doing the housework. For some people, audiobooks can be a much more enjoyable way of gaining knowledge than reading.

(31)________

Read the following passage and mark the letter A, B, C, or D to indicate the word that best fits each of the blanks from 6 to 10.
HOLIDAYS
We've just come back exhausted after a two-week holiday in France. We were really stupid. On the last day we drove non-stop from Marseille to Calais- we should have (6)           our journey in Lyon or Paris.   As if that wasn't enough, the sea was so rough in the English Channel that the (7)         took three hours instead of one and a half. Next year we've decided we're going on a cheap (8)           holiday to Italy. It sounds marvellous- the cost of the flight, the hotel and all our meals are (9)             in the price. While we're in Rome we'll be going on a guided tour of the Coliseum. The last time I was in Italy, I was on a business trip - I can't say I saw many of the famous tourist (10)                 on that occasion.
(7)..............................

SHOPPING MALLS
Victor Gruen, an American architect, revolutionized shopping in the 1950s by creating the type of shopping centre that we now call a shopping mall.
Gruen's (31) _______ was to provide a pleasant, quiet and spacious shopping environment with large car parks, which usually meant building in the suburbs. He also wanted people to be able to shop in all kinds of weather. He (32) _______ on using building designs that he knew people would feel comfortable with, but placed them in landscaped ‘streets’ that were entirely enclosed and often covered with a curved glass roof. This was done to (33) _______ some of the older shopping arcades of city centres, but while these housed only small speciality shops, Gruen's shopping malls were on a much grander scale.
Access to the whole shopping mall was gained by using the main doors, which (34) _______ the shopping ‘streets’ from the parking areas outside. As there was no need to keep out bad weather, shops no longer needed windows and doors, and people could wander (35) _______ from shop to shop. In many cities, shopping malls now contain much more than just shops; cinemas, restaurants and other forms of entertainment are also growing in popularity.
(33)..............................................................
 

Course numbers are an indication of which courses are to various categories of students at the University. Undergraduate courses with the numbers 100 or 200 are generally introductory courses appropriate for freshmen or sophomores, whereas courses with the numbers 300 or 400 often have prerequisites and are often to juniors and seniors only. Courses with the numbers 800 or above are open only to graduate students. ​Certain graduate courses, generally those devoted to introductory material, are numbered 400 for undergraduate students who qualify to take them and 600 for graduate students. Courses designed for students seeking a professional degree carry a 500 number for undergraduate students and a 700 number for graduate students. Courses numbered 99 or below are special interest courses that do not carry academic credit. If students elect to take a special interest course, it will not count toward the number of hours needed to complete graduation requirements.
Full - time undergraduate student is expected to take courses that total twelve to eighteen credit hours. A full-time graduate student is expected to take courses that total ten to sixteen credit hours. Student holding assistantships are expected to enroll for proportionately fewer hours. A part - time graduate may register for minimum of three credit hours. An overload, that is, more than the maximum number of hours, may be taken with the approval of an academic advisor. To register for an overload, students must submit the appropriate approval form when registering. Overloads above 24 hours will not be approved under any circumstances.

The word "appropriate" in the LAST paragraph is closest in meaning to ________.

Read the text and choose the best answer (A, B, C or D) to each of the questions. 

Poles Apart
Many are surprised to learn that Antarctica is nearly twice the size of the United States. The name Antarctica was coined to mean "opposite to the Arctic." It is just that in many ways. Antarctica is a high, ice-covered landmass. In the Arctic the landmasses are grouped around the ice-covered Arctic Ocean.

Largely because of this difference, the climate of the two areas is very different. Antarctica is the coldest area in the world. On the average it is about 30 degrees colder than the Arctic. At the South Pole, nearly 10.000 feet high, monthly mean temperatures run well below zero. Only in coastal regions do temperatures sometimes rise about freezing in the summer (December to March). In contrast, near the North Pole monthly mean temperatures often rise above freezing. 

At both poles, daily temperatures may drop far below the monthly mean. At the American South Pole Station, winter temperatures sometimes fall below -100 degrees Fahrenheit. Elsewhere, on higher parts of the south polar plateau, even lower temperatures are recorded.

A temperature of -127 degrees Fahrenheit was measured in August 1960. It is the world's record low temperature.

Partly because of this climatic difference, the land animals and plants of the two regions are very different. On the continent of Antarctica, there are very few plants. In the Arctic there are many plants. In some of the few ice-free areas of Antarctica, mosses, lichens, and algae are found. Penguins populate Antarctic coastlines but do not exist in the Arctic. The land animals of the Arctic are foxes, bears, reindeer, and lemmings. These animals are unknown in the Antarctic. Old rock layers show that this "oppositeness" between north and south extends far back into the early chapters of earth history.

Ice is the great feature of Antarctica. More than 4.5 million square miles of ice sheet cover the area. Great rivers of ice, called glaciers, push down the mountains. Antarctica is the storehouse of about 85 percent of the total world supply of ice. 

The icecap is very thick, averaging nearly 8,000 feet. At one spot, scientists have found the distance from the surface to the rock underneath the ice to be more than 13,000 feet.

If this great volume of ice were to melt, the volume of the world oceans would increase, and sea level would rise. Extreme atmospheric changes would have to take place for this to happen.

The coldest area in the world is _________.

Read the following passage and mark A, B, C, or D to indicate the correct answer to each of the blanks from 46 to 50.
University researchers have taken samples from a preserved dodo specimen in an (46)         to uncover the extinct bird‟s family tree. They worked with the British Natural History Museum to collect and study genetic material from large number of specimens: a preserved dodo, the extinct solitaire bird, and 35 kind of living pigeons and doves. Their analysis (47)           the doo and the solitaire to be close relatives with the Nicobar pigeon, their nearest living relative. The dodo lived on Mauritius in the Indian Ocean. It was a flightless bird, bigger than a turkey. By 1681, all dodos had been (48)      by hungry sailors. The    solitaire, which looked a bit like a dodo, had gone the same way by 1800. By extracting short pieces of the dodo‟s DNA and (49)        these with the DNA of living birds, the scientists were able to deduce when the dodo evolved away from its relatives into a separate entity. The scientists can now (50)       assume that the dodo developed its distinctive appearance and features as a result of its geographical isolation. They are now convinced that it separated from the solitaire about 25 million years ago, long before Mauritius became an island.
(50).................

Read the passage carefully and choose the correct answer.

Reading, as you know, is a continuous and never ending process. If you do very little reading, or if you read only material that offers no challenge to your comprehension, your reading will be of very little use. Once we reach a certain age, or once our formal schooling is completed, many of us become so restricted in our choice of reading that we rarely read any new type of reading experience. We tend to read only books in our professional or business field, or only inspirational books, or only our favorite newspapers every morning, or only one magazine for which we have developed a preference. And the trouble starts here. You should neither read only for entertainment nor only for information, but you should also read for intellectual growth, for mental stimulation, for enriching your background of knowledge, for wisdom, and for broader outlook and mature understanding. What kind of books should you read to continue your intellectual growth, to gain a background for opinion and for judgment? The answer issimple one: Read books in fields you have little or no acquaintance with, books that will open for you new horizons of learning, books that will help you explore new areas of knowledge and experience, books that will make the world and people more understandable to you. Sadly, more and more people today are giving up the printed word in favor of being entertained and informed by watching TV, a popular entertainment, device present at almost homes. More and more children are being subjected to TV programming, perhaps as a babysitter. More than two hours of TV time per day are now a part of children development, generating physiological and mental problems that are of growing concern among experts.

What kind of books is recommended?

Read the following passage and mark A, B, C, or D to indicate the correct answer to each of the blanks from 46 to 50.
University researchers have taken samples from a preserved dodo specimen in an (46)         to uncover the extinct bird‟s family tree. They worked with the British Natural History Museum to collect and study genetic material from large number of specimens: a preserved dodo, the extinct solitaire bird, and 35 kind of living pigeons and doves. Their analysis (47)           the doo and the solitaire to be close relatives with the Nicobar pigeon, their nearest living relative. The dodo lived on Mauritius in the Indian Ocean. It was a flightless bird, bigger than a turkey. By 1681, all dodos had been (48)      by hungry sailors. The    solitaire, which looked a bit like a dodo, had gone the same way by 1800. By extracting short pieces of the dodo‟s DNA and (49)        these with the DNA of living birds, the scientists were able to deduce when the dodo evolved away from its relatives into a separate entity. The scientists can now (50)       assume that the dodo developed its distinctive appearance and features as a result of its geographical isolation. They are now convinced that it separated from the solitaire about 25 million years ago, long before Mauritius became an island.
(46).................

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.

   One day in 1924, five men who were camping in the Cascade Mountains of Washington saw a group of huge apelike creatures coming out of the woods. They hurried back to their cabin and locked themselves inside. While they were in, the creatures attacked them by throwing rocks against the walls of the cabin.

   After several hours, these strange hairy giants went back into the woods. After this incident the men returned to the town and told the people of their adventure. However, only a few people accepted their story. These were the people who remembered hearing tales about footprints of an animal that walked like a human being.

   The five men, however, were not the first people to have seen these creatures called Bigfoot. Long before their experience, local Native Americans were certain that a race of apelike animals had been living in the neighboring mountain for centuries. They called these creatures Sasquatch.

   In 1958, workmen, who were building a road through the jungles of Northern California often found huge footprints in the earth around their camp.

   Then in 1967, Roger Patterson, a man who was interested in finding Bigfoot went into the Northern California jungles with a friend. While riding, they were suddenly thrown off from their horses. Patterson saw a tall apelike animal standing not far away. He managed to shoot seven rolls of film of the hairy creature before the animal disappeared in the hushes. when Patterson's film was shown to the public, not many people believed his story.

   In another incident, Richard Brown, a music teacher and also an experienced hunter spotted a similar creature. He saw the animal clearly through the telescopic lens of his rifle. He said the creature looked more like a human than an animal.

   Later many other people also found deep footprints in the same area. In spite of regular reports of sightings and footprints, most experts still do not believe that Bigfoot really exists.

Did the town people believe the story of the five men about their meeting with Bigfoot?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks. 
     The next time you are watching a film and you see one of the characters jumping out of a plane, falling off a horse, or being blown through a window - spare a (23) ______ for the stunt artist. Lots of people think that stunt artists are just "extras" who play small, unimportant parts in films and television. Nothing could be further from the truth. 
     A stunt artist must combine the skills of an actor with the physical abilities of a first- (24) _____________ athlete. He or she must be extremely fit, and highly trained in a number of activities like scuba-diving, horse riding, martial arts or parachuting. 
It is not easy to get started in a career as a stunt performer. Film and television producers look for experience and proven ability, as it is unlikely that they will take on a complete newcomer. However, because of the (25) ____________ of their profession, stunt artists tend to retire early. This means that new performers must be employed, or there will be no one to take (26) ______________ when the present generation quits. 
      Even when a stunt artist becomes well-known, the work is not regular. It may sometimes be necessary to travel to the other side of the world for a job which involves long hours and great physical danger. It is not a glamorous occupation either. Unlike the famous actors for (27) ____________ they sometimes risk their lives, few stunt artists are recognized in the street by adoring fans. 

However, because of the (25) ____________ of their profession, stunt artists tend to retire early.

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. 
      Sixty percent of working Americans today say they’ve left a job, or considered leaving a job, because they didn’t like their direct supervisor, according to a survey from human resource consulting firm Randstad US. Though leaving a job may seem like the best solution for retiring a bad boss, that doesn’t mean that it’s always the best plan for your career. In fact, if you’re in a situation where you love your job and the opportunities it presents, then leaving your role because of a difficult boss may not be the best idea. Pollak and Monster.com career expert Vicki Salemi broke down three ways you can deal with a bad boss without quitting a job you love. 
      Pollak says that in many cases, a difficult relationship with your boss is often due to differing personalities and habits. One way to mend this relationship, she says, is to closely study your boss’s behavior so that you can meet their expectations. “Become the world’s leading expert on your boss or your manager,” says Pollak, who is also the author of the book “The Remix: How to Lead and Succeed in the Multigenerational Workforce.” “How does this person like to communicate? If she hates long emails, stop sending long emails. If she doesn’t like it when you drop by her office but reacts better when you schedule an appointment, then learn to always schedule appointments instead of dropping in. If she is not a morning person, don’t ask for things in the morning. If this person is really detail-oriented, then triple check your documents before handing them in.” Salemi agrees. She says that if you have a boss who’s critical or a micromanager, often the best way to deal with them is to be proactive in meeting their needs. “It’s kind of like you’re managing them without making it seem like you’re managing them,” she says.
      When dealing with a difficult boss, Pollak says one of the best ways to figure out how to successfully work under their leadership is to talk to other people who you know have been in a similar situation. “Other people can be a resource, whether it’s a mentor, someone at a different company, a coach or people who have worked for this person in the past,” she says. “Treat it as a positive and say, ‘I really want to be successful working with X. What recommendations do you have?’” However, she emphasizes, you should never talk about the situation in a negative way, or say you don’t like working for your boss. Instead, discuss about the situation in a way that shows your willingness to adapt to make the relationship work.
      If talking to other colleagues isn’t helpful, then Pollak says one of your last options should be to talk directly to your boss. Consider your approach carefully. Instead of saying, “We’re not getting along. What should we do?”, say something to the effect of, “I’d really like to make sure that I’m serving your needs. I’d like to make sure that I’m communicating in a way that’s effective for you and I want to make sure that I’m being as productive as possible. Is there anything I can do differently?” This way, she says, you’re approaching the situation by asking how you can help, instead of emphasizing a problem.

What can be inferred from the passage?

Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage: 

"Books are written to provide knowledge and good books enrich the mind. By putting (1)…. under the influence of superior mind, we (2) ….. our mental powers. (3)…. good books, we learn that people everywhere are the (4) ......., in ali ages, and in all (5)…. . This knowledge improves our love (6)…. others and helps us to live in peace with them.
 We also (7)…. that the world was made not only for man (8)…. but for every creature that can feel hunger and thirst, warmth and cold. Though it may be possible for us to travel (9)…. the world and see the things happening today, it is not possible for us to see the things that happened in the past. But good books (10) …..us to see not only into the most remote regions of the world today, but also into the world in which our ancestors lived."

3. (3)…. good books, we learn that people everywhere

Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage: 

"Books are written to provide knowledge and good books enrich the mind. By putting (1)…. under the influence of superior mind, we (2) ….. our mental powers. (3)…. good books, we learn that people everywhere are the (4) ......., in ali ages, and in all (5)…. . This knowledge improves our love (6)…. others and helps us to live in peace with them.
 We also (7)…. that the world was made not only for man (8)…. but for every creature that can feel hunger and thirst, warmth and cold. Though it may be possible for us to travel (9)…. the world and see the things happening today, it is not possible for us to see the things that happened in the past. But good books (10) …..us to see not only into the most remote regions of the world today, but also into the world in which our ancestors lived."

6. This knowledge improves our love (6)…. others and helps us to live in peace with them.

Read the text below and decide which answer (A,B,C, or D) best fits each space.
Tattooing is an old art. In ancient Greece, people who had tattoos were regarded  asmembers of the (16)____classes. On the other hand, tattooing was  (17)_____in Europe by the early Christians, who thought that it was a sinful  thing to(18) .It was not until the late 18th century, when Captain Cook  saw South Sea Islander decorating their bodies with tattoos that attitudes began  to change. Sailors came back from these islands with pictures of Christ on their  backs and from then on, tattooing (19)_____in popularity. A survey by the  French army in 1881 (20)_____that among the 387 men (21)_______ there were  1,333 designs. Nowadays, not everybody finds tattoos acceptable. Some people  thing that getting one is silly because tattoos are more or less permanent. There  is also some (22)_____about (23)_____ a blood disease from unsterilized needles. Even for those who do want a tattoo, the (24)_____of getting one is not  painless, but the final result, in their eyes, is (25)______the pain. 

21......................

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.

I’m standing on a sidewalk in the early morning. The great avenues of Paris are silent, and the shops are closed. Suddenly, a couple appeared from a hole in the sidewalk. Mud covers their boots. They place the iron cover over the hole and run down the street, smiling. The couple had been exploring the tunnels beneath the city.

When Romans occupied Paris, they cut down stone from deep within the earth to build their city. Later, the French used more stone to construct the Notre Dame Cathedral. This left huge underground tunnels upon which part of the city now. Once used for growing mushrooms and as a hiding place, today they are mostly forgotten, except by "cataphiles" - those who love to go down into the tunnels below Paris, even though it is actually not permitted.

In the 70s and 80s, it is easier to enter the tunnels because there were many more open entrances through forgotten doorways and into catacombs - rooms filled with bones. The bones had been moved into the tunnels to solve the problem crowded cemeteries. By the end of the 1980s, most of the entrances were shut and police regularly walked the tunnels. However, there are still cataphiles, like the couple I saw that morning, and for those who dare, the underground is an exciting place to meet, party, perform for each other or create art.

My own experience began beneath the old Paris opera house, where sewer workers showed me a 55-meter-long underground pond, a pond that actually had fish in it! Later, at France's national bank, officials guided me below to an amazing room filled with 2,600 tons of gold.

As cataphiles are the best guides, I then asked one of the cataphiles to give me a tour. Descending into the underground through a secret entrance beneath a bridge, we walked for hours through catacombs, and galleries of huge, bright paintings. The cataphile told me "Many people come down here to party, some to paint. Some people to destroy or to create or to explore. We do what we want, We don't have rules..."

(Adapted from Reading Explorer 2, Paul Macintyre&David Bohlke, 2015)

The word "descending" in paragraph 5 is closest in meaning to .................

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word(s) for each of the blanks.

The relationship between students and teachers is less formal in the USA than in many other countries. American students do not stand up when their teachers (1) _______the room. Students are encouraged to ask questions during class, to stop in the teacher’s office for extra help, and to phone if they are absent. Most teachers (2) _________ students to enter class late or leave early if necessary. (3) ______the lack of formality, students are still expected to be polite to their teachers and classmates.

When students want to ask questions, they usually (4) _______ a hand and wait to be called on. When a test is being given, talking to a classmate is not only rude but also risky. Most American teachers consider that students who are talking to each other (5) _______ a test are cheating.

(1) _________

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.

   The countryside of Britain is well known for its beauty and many contrasts: its bare mountains and moorland, its lakes, rivers and woods, and its long, often wild coastline. Many of the most beautiful areas are national parks and are protected from development. When British people think of the countryside they think of farmland, as well as open spaces. They imagine cows or sheep in green fields enclosed by hedges or stone walls, and fields of wheat and barley. Most farmland is privately owned but is crossed by a network of public footpaths.

   Many people associate the countryside with peace and relaxation. They spend their free time walking or cycling there, or go to the country for a picnic or a pub lunch. In summer people go to fruit farms and pick strawberries and other fruit. Only a few people who live in the country work on farms. Many commute to work in towns. Many others dream of living in the country, where they believe they would have a better and healthier lifestyle.

   The countryside faces many threats. Some are associated with modern farming practices, and the use of chemicals harmful to plants and wildlife. Land is also needed for new houses. The green belt, an area of land around many cities, is under increasing pressure. Plans to build new roads are strongly opposed by organizations trying to protect the countryside. Protesters set up camps to prevent, or at least delay, the building work.

   America has many areas of wild and beautiful scenery, and there are many areas, especially in the West in states like Montana and Wyoming, where few people live. In the New England states, such as Vermont and New Hampshire, it is common to see small farms surrounded by hills and green areas. In Ohio, Indiana, Illinois and other Midwestern states, fields of corn or wheat reach to the horizon and there are many miles between towns.

   Only about 20% of Americans live outside cities and towns. Life may be difficult for people who live in the country. Services like hospitals and schools may be further away and going shopping can mean driving long distances. Some people even have to drive from their homes to the main road where their mail is left in a box. In spite of the disadvantages, many people who live in the country say that they like the safe, clean, attractive environment. But their children often move to a town or city as soon as they can.

   As in Britain, Americans like to go out to the country at weekends. Some people go on camping or fishing trips, others go hiking in national parks.

According to the passage, some Americans choose to live in the country because ___.