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Long ago prehistoric man began to domesticate a number of wild plants and animals for his own use. This not only provided a more abundant food source but also allowed more people to live on  a smaller plot of ground. We tend to forget that  all  of our present – day pets, livestock, and food plants were taken from the wild and developed into the forms we know today.
As centuries passed and human cultures evolved anf blossomed, humans began to organise their knowledge of nature into the broad field of natural history. One aspect of early natural history concerned the use of plants for drugs and medicine. The early herbalists sometimes overworked their imaginations in this respect. For example, it was widely believed that a plant or part of a plant that resembles an internal organ would cure ailments of that organ. Thus, an extract made from a heart-shaped leaf might be prescribled for a person suffering from heart problems.
Nevertheless, the overall contributions of these early observers provided the rudiments of our present knowledge of drugs and their uses.

Domestication  of  plants  and  animals  probably  occurred  because  of     .

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British families started going on holiday to the seaside around the middle of the 19th century. The invention of the railways (45) ____ this possible. The first holidaymakers were quite rich and went for their health and education. The seaside was a place to be (46) ____ of illness, and doctors recommended bathing in the sea and drinking sea water. Also to (47) ____ their knowledge, families attended concerts and read books from the library. At that time, ordinary working people had very little time (48) ____ work. However, in 1871, the government introduced four ‗Banking Holiday‘ - national holiday days. This (49) ____ people to have a day or two out, which now and then gave them a taste for leisure and the seaside. At first, they went on day-trips, taking (50) ____ of special cheap tickets on the railways. By the 1880s, rising incomes (51) ____ that many ordinary workers and their families could have a week‘s holiday at the seaside. Rail fares were reduced and cheap hotels were built to (52) ____ them. Holidaymakers enjoyed being idle, sitting on the beach, bathing in the sea, and eating ice-cream. Cheap entertainment was (53) ____ offer and holidaymakers went to have fun. Today the English seaside (54) ____ popular, with more than 18 million holidays taken there each year.

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Can you imagine what life would be like if there were no telephone? You could not call (1) _____ your friends on the phone and talk to them. If fire (2) ____out in your house you could not call the fire department. If somebody was sick, you could not call a doctor. In our daily life we need to (3) ____ with one another. We need do this mostly by speaking to other people and listening to (4) ___ they have to say to us, and when you are close (5) _______ them you can do this very easily. However, our voices will not travel very far even when we shout. The man who (6) _______ this possible was Alexander Graham Bell, a Scotsman, born in Edinburgh in 1847. Bell, a teacher of visible speech who later moved to Canada, (7) _____all his spare time experimenting. (8) _____enthusiastic was he in his research for a means of sending speech (9) ____ electricity that he left much time for his day-to-day work and at one time was (10)_____ penniless

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Facebook is a for-profit online social media and social networking service. The Facebook website was launched on February 4th, 2004 by Mark Zuckerberg, along with fellow Harvard College students and roommates. Since 2006, anyone age 13 and older has been allowed to become a registered user of Facebook though variations exist in minimum age requirement, depending on applicable local laws.
Over 25 million people in the Uk use Facebook. That’s 45% of population! And on average, each user spends over six hours a month on Facebook. Though not the highest this is a considerable number. Is Facebook is a dangerous obsession or just harmless fun? Seventeen-year-old Bethan has written on her blog about what it was like to stop using Facebook. I think I am a Facebook addict. I log on to Facebook everyday to chat to my friends real friends and loads of online friends. Sometimes I have ten conversations going at the same time. I upload photos and update my Facebook profile all the time. But recently I’ve started to feel worried if I am offline for more than a few hours. And then last week I forgot to meet a real friend because I was online! I’ve realised I could have a problem. So I’ve decided to give it up for a while. I found it really hard. Facebook and my friends demanded to know why I had left. I spent the first few evenings wondering what everyone was chatting on Facebook. I even phoned a couple of friends to find out. The fourth night I wasn’t quite so bad. I actually concentrated on my homework better and I had more time to watch my TV programmes. And I spoke to my friends during the day at school. At the end of the first week, I reactivated my account, I think Facebook is fun and it’s useful for posting messages to friends and sharing photos. But I’ll try not to spend so much time on it in the future.

The word “applicable” in paragraph 1 is closest in meaning to     .

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From the seeds themselves to the machinery, fertilizers and pesticides –The Green Revolution regimen depends heavily on technology. One (1)_____, however , depends much (2)_________on technology – organic farming . Many organic farmers use machinery, but (3)_____chemical fertilizers or pesticides .(4)______chemical soil enriches , they use animal manure and plant part not used as food – natural , organic fertilizers that are clearly a renewable (5)_____.Organic farmers also use alternatives (6)_____pesticides ; for example they many rely on natural predators of certain insect pets.(7)___ the need arises ; they can buy the eggs and larvae of these natural predators and introduce them into their crop fields . They use(8)_____techniques to control pests as well , like planting certain crops together because one crop repels the other‘s pests . Organic farmers do not need a lot of land ; (9)_____, organic farming is perfectly (10)_____to small farm and is relatively inexpensive .Finally , many organic farmers‘ average yields compare favorably with other farmers‘ yields

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Under the Medicare insurance policy, people approaching 65 may enroll during the seven-month period that includes three months before the sixty-fifth birthday, the month in which the birthday falls, and three months after the birthday. However, if they wish the insurance coverage to begin when they reach 65, they must enroll three months before their birthday. People who do not enroll within their first enrollment period may enroll later, during the first three months of each year. Those people, however, must pay 10% additional for each twelve-month period that elapsed since they first could have enrolled.
The monthly premium is deducted from social security payment, railroad retirement or civil service retirement benefits.

The period after the sixty-fifth birthday during which people may apply for Medicare is     .

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Rachel Carson was born in 1907 in Springsdale, Pennsylvania. She studied biology at college and zoology at Johns Hopkins University, where she received her master’s degree in 1933. In 1936, she was hired by the U.S. Fish and Wildlife Service, where she worked most of her life.
Carson’s first book, Under the Sea Wind, was published in 1941. It received excellent reviews, but sales were poor until it was reissued in 1952. In that year she published The Sea Around Us, which provided a fascinating look beneath the ocean’s surface, emphasizing human history as well as geology and marine biology. Her imagery and language had a poetic quality. Carson consulted no less than 1,000 printed sources. She had voluminous correspondence and frequent discussions with experts in the field. However, she always realized the limitations of her nontechnical readers.
In 1962, Carson published Silent Spring, a book that sparked considerable controversy.
It proved how much harm was done by the uncontrolled, reckless use of insecticides. She detailed how they poison the food supply of animals, kill birds and fish, and contaminate human food. At the time, spokesmen for the chemical industry mounted personal attacks against Carson and issued propaganda to indicate that her findings were flawed. However, her work was proved by a 1963 report of the President’s Science Advisory Committee.

The passage mainly discusses Rachel Carson’s work     .

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Library is a collection of books and other informational materials made available to people for reading, study, or reference. The word library comes (1)_________ liber, the Latin word for ― book‖ . (2) _____ , library collections have almost always contained a variety of materials. Contemporary libraries maintain collections that include not only printed materials such as manuscripts, books , newspapers, and magazines, (3)_______ audio-visual and online databases. In addition (4) _____ maintaining collections within library buildings, modern libraries often feature telecommunications links that provide users with access to information at remote sites. The central mission of a library (5) _______ to collect , organize, preserve, and provide access to knowledge and information. In fulfilling this mission, libraries preserve a valuable record of culture that can be passed down to (6)_______ generations. Libraries are an essential link in this communication between the past , present, and future. Whether the cultural record is contained in books or in electronic formats, libraries ensure (7) ____ the record is preserved and made available for later use. People use library resources to gain information about personal (8)__ or to obtain recreational materials such as films and novels. Students use libraries to supplement and enhance their classroom experiences, to learn (9)_____ in locating sources of information, and to develop good reading and study habits. Public officials use libraries to research legislation and public policy issues. One of the most valued of all cultural institutions, the library (10) ___ information and services that are essential to learning and progress. From ― Library ( institution)‖ by Richard S.Halsey et al

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Mobile phones emit microwave radio emissions. Researchers are questioning whether exposure to these radio waves might (36) _______ to brain cancer. So far, the data are not conclusive. The scientific evidence does not (37) _______ us to say with certainly that mobile phones are categorically (38) _______. On the other hand, current research has not yet (39) _______ clear adverse effect associated with the prolonged use of mobile phones Numerous studies are now going (40) _______ in various countries. Some of the results are contradictory but others have shown an association between mobile phone use and cancer. (41) _______, these studies are preliminary and the issue needs further, long - term investigation. (42) _______ the scientific data is more definite, it is prudent for people to try not to use mobile phone for long (43) _______ of time. Don't think that hands free phones are any safer either. At the moment, research is in fact showing the (44) _______ and they may be just as dangerous. It is also thought that young people (45) _______ bodies are still growing may be at particular risk

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

"“Customs, then, is the great guide of human life,” wrote Scottish (1)…..  David Hume. Knowing the customs of a place is a guide to understanding the soul of that place and its (2)….. . The customs of a nation: how people marry, how families celebrate holidays and other (3)…… , what people eat, how they socialize and have fun (4) ….. many things about their country and their inner thoughts and feelings.
 In Wales, a (5)…… handshake is usual when first being introduced, but is often dispensed with thereafter. When meeting for the first time, a common (6)….. is “How do you do?” or “Pleased to meet you.” On other occasions, “How are you?” may be used. Good friends, (7) ……  young people, use “Hello” and “Hi” to greet each other. Women who are close friends may kiss each(8) ….. once slightly on the cheek; sometimes men also kiss women this way.
 Many women remain seated when being introduced and shaking hands. First (9) …… are widely used. The Welsh enjoy visiting friends and neighbors, and often call without an invitation. If invited for a meal, however, it is (10) ……. impolite to arrive late."

2. Knowing the customs of a place is a guide to understanding the soul of that place and its (2)….. . 

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When the word "endangered" is mentioned, people usually think of particular species, like the panda or whooping crane. However, we would like to encourage you to think about (1) _______ in a broader context. It is (2) _______, the physical places where species live and interact with one another. Although the development of special breeding programs, also known as captive conservation, may help some species in some cases, it is clearly not (3) _______ answer to the global problem. Indeed, (4) _______ we are able to protect natural areas where endangered species actually live, they have no future Species become endangered for a wide (5) ________ of reasons. By analyzing and grouping many individual cases, however, we find the same broad causes (6) _________ again and again. They are Habitat Destruction, Exotic Species, and Overexploitation. Among other factors threatening particular species are limited: distribution, disease, and pollution. Limited distributions are often a consequence of other threats: populations confined to one or a few small areas because of habitat (7) _________, for example, may be disastrously affected by random factors. Diseases can have severe (8) _________ on species lacking natural genetic protections against particular pathogens, like the rabies and canine distemper viruses that are currently devastating carnivore populations in East Africa. Domestic animals are usually the reservoirs of these and other diseases affecting wild (9) _________, showing once again that human activities lie at the root of most causes of endangerment. Pollution has seriously done harm (10) _________ number of terrestrial species, although species living in freshwater and marine ecosystems are also suffering

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Televisions has changed the lifestyle of people in every industrialized country in the world. In the United States , where sociologists have studied the effects , some interesting observations have been made. TV, although not essential , has become a(n) (1)____part of most people‘s lives. It has become a baby-sitter , an initiator of (2)____of program does not elevate people into greater (3)____, but rather maintains and encourages the status quo. The (4)____reason for the lack of quality in American TV is related to both the history of TV development and the economics of TV. TV in American began with the radio. Radio companies and their sponsors first experimented with TV. Therefore , the close relationship , (5)____the advertisers had with radio programs , but many actually produced the programs .Thus , (6)____from the capitalistic , profit – oriented sector of American society, TV is primarily (7)_____with reflecting and attracting society (8)____than innovating and experimenting with new ideas . Advertisers want to attract the largest viewing audience possible ; to do so TV in America today remains , to a large (9)______ , with the same organization and standards as it had thirty years ago. The hope for some evolution and true achievement toward improving society will require a change in the (10)____ system.

A recent survey of crime statistics shows that we are all more likely to be burgled now than 20 years ago and the police advise everyone to take a few simple precautions to protect their homes.

The first fact is that burglars and other intruders prefer easy opportunities, like a house which is very obviously empty. This is much less of a challenge than an occupied house, and one which is well-protected. A burglar will wonder if it is worth the bother.

There are some generalt ips on how to avoid your home becoming another crime statistic. Avoid leaving signs that your house is empty. When you have to go out, leave at least one light on as well as a radio or television, and do not leave any curtains wide open. The sight of your latest music centre or computer is enough to tempt any burglar.

Never leave a spare key in convenient hiding place. The first place a burglar will look is under the doormat or in a flower pot and even somewhere more ‘imaginative’ could soon be uncovered by the intruder. It is much safer to leave a key with a neighbour you can trust. But if your house is in a quiet, desolate area be aware that this will be a burglar’s dream, so deter any potential criminal from approaching your house by fitting security lights to the outside of your house.

But what could happen if, in spite of the aforementioned precautions, a burglar or intruder has decided to target your home. Windows are usually the first point of entry for many intruders. Downstairs windows provide easy access while upstairs windows can be reached with a ladder or by climbing up the drainpipe. Before going to bed you should double-check that all windows and shutters are locked. No matter how small your windows may be, it is surprising what a narrow gap a determined burglar can manage to get through. For extra security, fit window locks to the inside of the window.

What about entry via doors? Your back door and patio doors, which are easily forced open, should have top quality security locks fitted. Even though this is expensive it will be money well spent. Install a burglar alarm if you can afford it as another line of defence against intruders.

A sobering fact is that not all intruders have to break and enter into a property. Why go to the trouble of breaking in if you can just knock and be invited in? Beware of bogus officials or workmen and, particularly if you are elderly, fit a chain and an eye hole so that you scrutinise callers at your leisure. When you do have callers never let anybody into your home unless you are absolutely sure they are genuine. Ask to see an identity card, for example.

If you are in the frightening position of waking in the middle of the night and think you can hear an intruder, then on no account should you approach the intruder. It is far better to telephone the police and wait for help.

The writer thinks that hiding a key under a doormat or in a flower pot ________ ,

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Polar bears are in danger of dying out. (45) _________ some other endangered animals, it‘s not hunters that are the problem, it‘s climate change. Since 1979, the ice cap at the Arctic Circle where the polar bears live has (46) _________ in size by about 30 percent. The temperature in the Arctic has slowly been (47) _________ and this is (48) _________ the sea ice to melt, endangering the polar bears‘ home. The polar bears‘ main (49) _________ of food are the different types of seal found in the Arctic. They catch them by waiting next to the air holes the seals have (50) _________in the ice. (51) _________ the bears are very strong swimmers, they could never catch seals in the water. This means that the bears (52) _________ do rely on the ice to hunt. Polar bears also need sea ice to travel. They can (53) _________ a huge territory and often swim from one part of the ice to another. They have been known to swim up to 100km, but when there is less ice, they may have to swim further and this can (54) _________ fatal to the bears. A number of bears have drowned in the last few years and scientists believe that it is because they were not able to reach more sea ice before they became too tired and couldn‘t swim any further

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The Ruropean Union (EU) is an organization that brings European countries together to cooperate on economic and political matters. To help member countries make (1) _______ and settle disputes, the EU has its own governing bodies. These (2) _______ a legislature and courts. A major goal of the EU is topromote (3) ______ trade between member countries. In the past, trade barriers prevented European countries from trading freely. These barriers included tariffs, a tax paid (4) _______ goods are moved from one country to another. Removing tariffs, made trading easier and less costly. The EU also (5) ______ it easier for people to move from one country to another to find work or go to school. Today, all EU member countries grant their citizens European citizenship. That means a citizen of France or Germany has the (6) ______ to live and work in every other country that belongs (7) ______ the EU. In addition to economic cooperation, the EU works to promote (8) ______ cooperation among its members. The EU believes member countries (9) ______ decide together how to respond to international problems or threats. But many Europeans don‘t want to (10) ______ the right to defend their countries as they see fit. Often, this makes political cooperation difficult.

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Hypatia was born in Alexandria, in Egypt, in 370 A.D. For many centuries, she was (16) only woman scientist to have a place in the history books. Hypatia's father was director of Alexandria University, and he (17) sure his daughter had the best education available. This was unusual, as most women then had few (18) to study. After studying in Athens and Rome, Hypatia returned to Alexandria (19) she began teaching mathematics. She soon became famous (20) her knowledge of new ideas. We have no copies of her book, (21) we know that she wrote several important mathematical works. Hypatia was also interested in technology and (22) several scientific tools to help with her work. At the (23) , many rulers were afraid of science, and (24) connected with it was in danger. One day in March 415, Hypatia (25) attacked in the street and killed

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People who daydream are often thought of in negative terms, such as being lazy or not doing what they should be doing. However, scientists who study the brain have learned many interesting things, especially from studying the brains of daydreamers. In fact, far from being a waste of time, some scientists believe that daydreaming is a healthy and useful activity for all of our brains. In order to study the brain, scientists use special devices that scan the brain and show pictures of which parts of the brain are active at certain times. When a person is daydreaming, the device will show a distinct pattern of activity in the brain called the “default” mode of thinking. In the default mode, the top or outside part of the brain is very active. Actually, several regions of the brain are interacting in this mode. Some scientists describe this mode as a time when the brain focuses on itself rather than focusing on the environment around the person. Typically, this occurs when a person is doing simple, tedious work or performing routine actions that don’t need much attention, like walking to school or cooking simple foods. People tend to daydream during such activities. The importance of daydreaming lies in developing both creative and social skills. When the mind is not engaged in dealing with one’s immediate situation or problem, then it is free to wander. A time of wandering allows the mind to create things. New inventions may be imagined, or possible solutions to a problem can be planned. For example, solutions for problems in relationships with other people may come to mind. In fact, most daydreams involve situations with others. Perhaps these are daydreams based on memories of the past, or daydreams of what might be in the future. In either case, daydreams help us develop the appropriate skills we can use in real interactions with others. As a neurologist, Dr. Marcus Raichle of Washington University explains: “When you don’t use a muscle, that muscle really isn’t doing much. But when your brain is supposedly doing nothing and daydreaming, it’s really doing a tremendous amount.” During the so-called “resting state” the brain isn’t resting at all!
5. The word tremendous in paragraph 4 is closest in meaning to ______

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One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, (1) ________ pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools (2) ________ poison. Lake Baikal in Russia is one of the largest lakes in the world. It (3) ________ a rich variety of animals and plants, including 1,300 rare species that do not exist (4) ________ else in the world. But they are being destroyed by the massive volumes of toxic effluent which (5) _______ into the lake every day. Even where law existed, the government did not have the power to enforce them. Most industries simply ignore the regulations. The Mediterranean Sea (6) ________ 1% of the world's water surface. But it is the dumping (7) ________ for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles (8) ________ shore. Water is free to everyone. A few years ago, people thought that the supply of clean water in the world was limitless. Today, many water supplies have been (9) ________ by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious (10) ________. We should do something now.

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The Thames is the longest and best-known river in Britain. It is 210 miles/338 kilometres ___(1)___ and flows from the Cotswolds in central England to the North Sea after through London. Other famous towns on the river ___(2)___ Oxford, Windsor 1, Henley and Greenwich. ___(3)___ bridges across the Thames in London are London Bridge, Tower Bridge and Westminster Bridge. Large ships can sail ___(4)___ the Thames ___(5)___ London and smaller ones a further 86 miles/138 kilometres. A large area in the east of London was formerly a major port on the river, but in recent times this Docklands area has been___(6)___. The Thames Barrier is a large barrier ___(7)___ across the River Thames at Woolwich, east of London, to prevent London from being flooded. It was completed in 1982 and ___(8) ___ opened in 1984. It consists of ten gates, which ___(9)___ on the bottom of the river when the barrier is not required. If there is a danger of flooding, the gates rise to form a solid ___(10)___ 50 feet/15 metres high

Advantages of Living in a Big City

Do you live in a big city? It is said that living in big cities is expensive because of the high living cost. There are also pollution and traffic problems that make living in big cities unpleasant. However, many people enjoy living in big cities because they offer convenience and countless options for entertainment.

Many big cities already have good public transportation systems, which make it easy for the citizens to go anywhere around the city. This also reduces and helps overcome the problem of traffic jams that often occur at peak times. With the convenience of public transportation, the citizens do not have to drive everywhere and can save money as they do not have to pay for parking charges.

Staying healthy is everybody’s concern and in big cities you can find the best possible medical care for any diseases, especially the severe ones. Moreover, compared to rural areas, access to medical treatment is easier because there are always clinics or medical centers that open 24 hours in many parts of the city so you can get medical help anytime, as soon as you need it. Reaching hospitals is also easier as public transport is usually available 24 hours a day.

There is a saying that big cities never sleep. This is true for some cities in which the nightlife begins just when people in other cities are ready to go to bed. Big cities like New York, Madrid, London and Paris have vibrant nightlife. People can still find entertainment, dine out or go shopping into the early hours. 

City dwellers are usually more diverse and there are many communities that hold social events or parties, which provide interesting opportunities for social interactions and social networking. The social interactions allow you to learn about other cultures and share interests with people from different backgrounds, which makes you more open minded and able to understand individuals. On the other hand, the social networking helps you to broaden not only personal but also professional relationships.

All in all, living in big cities is more convenient because of the complete facilities provided. The advanced transportation system enables the citizens to access public facilities easier, cheaper and faster. Big cities also provide better education and health service. In addition, city life is more fun and exciting because there is a wide range of entertainment to enjoy and a lot of social events to attend. 

Why do many people like living in big cities?

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All plants rely on nutrients taken from the soil in order to survive. However, in areas where the soil does not contain enough (1)_____ nutrients, some plants have adapted to (2) _____ their diets from another source: living organisms. Though they are few in number, carnivorous plants are (3)_____ fascinating beings that ―eat‖ anything from onecelled organisms to insects in order to survive. They are commonly found in marshlands. Carnivorous plants feature one of several types of ―traps‖ to ensnare prey, which they consume to make up for nutrients that may be missing from the soil. While there are over 400 species of carnivorous plants in the world today, some are more (4)_____ than others. The most well-known of these plants are the snap traps, which include the Venus flytrap. Snap traps are easily identified by their leaves, which are separated into two lobes that have the ability to fold together. Inside the lobes, the surface is covered with tiny hairs that are (5) _____ to movement. When the plant‘s prey brushes against the hairs, it triggers a closing mechanism that rapidly brings the two lobes together, trapping the prey (6)_____ inside. The response of the traps is phenomenal (7)_____ speed: the time between triggering the hairs and snapping shut is less than a second. As the prey struggles inside the trap, it only triggers more hairs, causing the leaves to tighten their (8) _____. The plant then secrets liquid chemicals from special glands into the trap to dissolve the prey and absorb all of its nutrients. Besides the Venus flytrap, only one other type of snap trap exists today, (9)_____ to as the waterwheel plant. The two share a common ancestor and differ only in a few ways. For instance, the waterwheel is an aquatic plant, while the flytrap is exclusively terrestrial. In addition, the flytrap feeds primarily on arthropods like spiders, while the waterwheel lives (10)_____ simple invertebrates, like certain types of plankton