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With above 20,000 species, the world’s population of ants has continued to increase even as other animal populations have declined

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The signing of the peaceful treaty was an event of major importance.

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Everyone wants to reduce pollution. But the pollution problem is (1)______ complicated as it is serious. It is complicated (2)______ much pollution is caused by things that benefit people. (3)______, exhaust from automobiles causes a large percentage of air pollution. But the automobile (4)______ transportation for millions of people. Factories discharge much (5)______ the material that pollutes the air and water, but factories give employment to a large number of people. Thus, to end (6)_______ greatly reduce pollution immediately, people would have to (7)______ using many things that benefit them. Most of the people do not want to do that, of course. But pollution can be (8)______ reduced in several ways. Scientists and engineers can work to find ways to lessen the (9)______ of pollution that such things as automobiles and factories cause. Governments can pass and enforce laws that (10)______ businesses and traffic to stop, or to cut down on certain polluting activities

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The volume of traffic in many cities in the world today continues to expand. This (1)______many problems, including serious air pollution, lengthy delays, and the greater risks (2) ______accidents. Clearly, something must be done, but it is often difficult to persuade people to change their habits and leave their cars at home. One possible (3)______is to make it more expensive for people to use their cars by increasing charges for parking and bringing in tougher fines for anyone who (4)______ the laws. In addition, drives could be required to pay for using particular routes at different times of the day. This system, (5) ______as “road pricing”, is already being introduced in a number of cities, using a special electronic card (6) ______to windscreen of the car. Another ways of (7) ______with the problem is to provide cheap parking on the outskirts of the city, and strictly control the number of vehicles allowed into the center. Drivers and passengers then use a special bus service for the (8) ______stage of their journey. Of course, the most important (9) ______is to provide good public transport. However, to get people to give up the comfort of their cars, public transport must be felt to be reliable, convenient and comfortable, with fares 10) _______at an acceptable level.

It is estimated that over 99 percent of all species that ever existed have become extinct. What causes extinction? When a species is no longer adapted to a changed environment, it may perish. The exact causes of a species’ death vary from situation to situation. Rapid ecological change may render an environment hostile to a species. For example, temperatures may change and a species may not be adapted. Food resources may be affected by environmental changes, which will then cause problems for a species requiring these resources. Other species may become better adapted to an environment, resulting in competition and, ultimately, in the death of a species.
The fossil record reveals that extinction has occurred throughout the history of Earth. Recent analyses have also revealed that on some occasions many species became extinct at the same time - a mass extinction. One of the best-known examples of mass extinction occurred 65 million years ago with the demise of dinosaurs and many other forms of life. Perhaps the largest mass extinction was the one that occurred 225 million years ago, when approximately 95 percent of all species died. Mass extinctions can be caused by a relatively rapid change in the environment and can be worsened by the close interrelationship of many species. If, for example, something were to happen to destroy much of the plankton in the oceans, then the oxygen content of Earth would drop, even affect organisms not living in the oceans. Such a change would probably lead to a mass extinction.
One interesting, and controversial, finding is that extinctions during the past 250 million years have tended to be more intense every 26 million years. The periodic extinction might be due to intersection of the earth’s orbit with a cloud of comets, but this theory is purely speculative. Some researchers have also speculated that extinction may often be random. That is, certain species may be eliminated and others may survive for no particular reason. A species' survival may have nothing to do with its ability or inability to adapt. If so, some of revolutionary history may reflect a sequence of essentially random events.

In paragraph 3, the author makes which of the following statements about a species’ survival?

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Australian koalas are furry, gray animal that live in trees and feed on leaves.

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New uses for plastics were found during the 1950’s and 1960’s in medicine, space, research, industrial, and architecture.

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Environmental Concerns
Earth is the only place we know of in the universe that can support human life. (1) ______ human activities are making the planet less fit to live on. As the western world carries on consuming (2)_______ of the world's resources while half of the world's population do so just to stay (3)_______ we are rapidly destroying the only resource we have (4)________ which all people can survive and prosper. Everywhere fertile soil is (5)______ built on or washed into the sea. Renewable resources are exploited so much that they will never be able to recover (6)______. We discharge pollutants into the atmosphere without any thought of the consequences. As a (7)______, the planet's ability to support people is being reduced at the very time when rising human numbers and consumption are making increasingly heavy demands on it. The Earth's (8)______ resources are there for us to use. We need food, water, air, energy, medicines, warmth, shelter and minerals to (9)______ us fed, comfortable, healthy and active. If we are sensible in how we use the resources they will last indefinitely. But if we use them wastefully and excessively they will soon (10)_______ and everyone will suffer

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Magnets
A solid object that has the power to attract iron and some metals is called a magnet. It does this through its magnetic field, a region of force surrounding it. The (1) _____ the magnet, the more intense is the field. Objects that are attracted to the magnet feel a force (2)­­ _____ as “magnetism” when they are inside the magnetic field. This magnetic force can pass (3) _____ some materials. Even a weak magnet will attract a pin to the other side of a (4) ______ of paper, for example. Magnets come in (5) ______ shapes. A familiar one is the curved horseshoes magnet. There are also bar magnets in the form (6) _____ disc or a stubby cylinder. Every magnet has (7) ______ poles, called north and south, at opposite ends of it: at the two ends of a horseshoes magnet, for example, or on the two sides of a disc. Powerful magnets can be (8) _______ by passing an electric current through wire coiled around a piece of iron. The (9) _____ is called and electromagnet. Magnets are (10) ______ in many household and everyday devices. They are also commonly used in industrial machinery, usually in the form of electromagnets

ACADEMICS AREN'T THE PROBLEM
Studies about how students use their time might shed light on whether they face increased academic and financial pressures compared with earlier eras.
Based on data about how students are spending time, academic or financial pressures don’t seem to be greater now than a generation ago. The data show that full-time students in all types of colleges study much less now than they did a generation ago - a full 10 hours a week less. Students are also receiving significantly higher grades. So it appears that academic pressures are, in fact, considerably lower than they used to be.
The time-use data don't suggest that students feel greater financial pressures, either. When the time savings and lower opportunity costs are factored in, college appears less expensive for most students than it was in the 1960s. And though there are now full-time students working to pay while in college, they study less even when paid work choices are held constantly.
In other words, full-time students do not appear to be studying less in order to work more. They appear to be studying less and spending the extra time on leisure activities or fun. It seems hard to imagine that students feeling increased financial pressures would respond by taking more leisure.
Based on how students are spending their time then, it doesn't look as though academic or financial pressures are greater now than a generation ago. The time-use data don’t speak directly to social pressures, and it may well be that these have become more intense lately.
In one recent set of data, students reported spending more than 23 hours per week either socializing with friends or playing on the computer for fun. Social activities, in person or on computer, would seem to have become the major focus of campus life. It is hard to tell what kinds of pressures would be associated with this change.

According to the author, the fact that students have more time for leisure is a proof that _______.

Read the passage below and choose the correct word for each blank space.
HUE IMPERIAL CITY
The construction of the Imperial City started (31)______1805, under the reign of Emperor Gia Long, and (32)______completed in 1832, under the reign of Emperor Minh Mang. Built (33)______the northern bank of (34)______Perfume River, the Imperial City was influenced by the style of a French architect, Vauban. The city (35)______three sections: the Royal Citadel, the Imperial Enclosure, and the Forbidden Purple City.

31_________

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Because it is a healthy way to exercise, aerobic dancing is considered as an excellen method for release tension.

Choose the item among A, B, C, or D that best answers the question about the passage.
Have you ever visited London, one of the most famous cities in the world? London is divided into three parts, The City, the West End, and the East End. The City is Britain’s commercial and banking center. The West End is the part where rich people live. The East End is the part where poor people live.
Lenin visited London before the Great October Socialist Revolution. He often came to work at the British Museum. He gathered material for his works. Lenin studied the life of the British workers and the British labor movement. He attended meetings and gatherings. He spent much time learning English in order to master it. Lenin liked to walk around the city to learn more about the British capital. He called London the city of striking contrasts. 

How many parts is London divided into? 

Fill in each numbered blank with one suitable phrase.
Nowadays lots of people drive to large supermarket to (31)___ their shopping. These supermarkets have car parks, so you can buy several (32)___ of shopping. You can fill your trolley, and (33)___ put it in your car. Some people prefer to go to local shops. These small shops are usually (34)___ than supermarkets. Some towns have an open-air market in the center, (35)___ you can buy fruit and vegetables, but you have to carry your shopping home.

35__________

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The computer has proved to be very (31)_________to our lives. In fact, it can not only do simple (32)_________- add, subtract, multiply or divide - with lightning speed, but also gather a wide range of information for many purposes. They can (33)_________hand-printed letters, play chess, compose music, write plays or even design other computers. In business and industry, the computer keeps track of sales trends and production needs, mails dividend checks, and makes out company payrolls. (34)_________they are taking over some of the tasks that were once accomplished by our brains, computers are not replacing us. Our brain (35)_________more than 10 billion cells and a computer has only a few hundred thousand parts.

32.____________

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Prevented (A) the soil from erosion, the trees are planted by the farmer many years before were which stopped the flood from reaching his house.

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Many small houses and huts were washed away when the river bursted its banks.

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Bonsai trees have always been a source of great fascination to people. They are perfect miniatures, grown in pots small enough to sit on a windowsill. You have to keep reminding yourself that these trees are (1) ____real and identical to their larger cousins in all respects except their size. Rather like other small and perfectly-formed artifacts, bonsai trees, (2) ___quite a high price in the marketplace and so it doesn’t come as a great surprise to find that they also attract the attention of thieves. It seems that quite a flourishing business has (3) _____, in which they are stolen from the homes of grower and collectors, then reported and trimmed by unscrupulous dealers, to be sold on, at good prices, to unsuspecting buyers. One of Britain’s top collectors of bonsai trees, Paul Widdington, believes that he has found a solution, however. After losing his life’s work, (4) ____at £250,000, when burglars broke into his home one night, Paul decided to (5) ________the possibilities of electronically tagging the trees he bought as a replacement. This (6)______ injecting a microchip the size of a (7) ____of rice intro trunk of each tree. Each chip is a laser-etched with information which is (8) ____ in a central register held by the police. Paul is quite aware that this kind of data-tagging doesn’t prevent thieves from stealing the trees in the first (9) _____, although it may increase the (10) ____ of getting them back. So he’s also installing a security alarm system, complete with infra-red detectors, in his home.

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THE FIRST WOMAN SCIENTIST
Hypatia was born in Alexandria, in Egypt, in 370 A.D. For many centuries, she was (1)________only woman scientist to have a place in the history books. Hypatia's father was director of Alexandria University, and he (2) ______ sure his daughter had the best education available. This was unusual, as most women then had few (3)_______ to study. After studying in Athens and Rome, Hypatia returned to Alexandria (4)_______ she began teaching mathematics. She soon became famous (5)______ her knowledge of new ideas. We have no copies of her book, (6)____ we know that she wrote several important mathematical works. Hypatia was also interested in technology and (7)_____ several scientific tools to help with her work. At the (8)______, many rulers were afraid of science, and (9)_______ connected with it was in danger. One day in March 415, Hypatia (10)________ attacked in the street and killed

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You will make the interview process easier for the employer if you prepare relevant information about yourself. Think about how you want to present your (1)________  , experiences, education, work style, skills, and goals. Be prepared to supplement all your answers with examples that support the statements you make. It is also a good idea to review your resume with a critical eye and (2)____             areas that an  employer might see as limitations or want further information. Think about how you can answer difficult' questions (3) ______and positively, while keeping each answer brief. An interview gives the employer a (4)_____ to get to know you. While you do want to market yourself to the employer, answer each question with an honest (5)_______. Never say anything negative about past experiences, employers, or courses and professors. Always think of something positive about an experience and talk about that. You should also be (6)_______ . If     you  are  genuinely interested (7) ____ the job, let the interviewer know that. One of the best ways to show you are keen on a job is to demonstrate that you have researched the organization prior to the interview. You can also (8)_____interest by asking questions about the job, the organization, and its services and products. The best way to impress an employer is to ask questions that build upon your interview discussion. This shows you are interested and (9)______close attention to the interviewer. It is a good idea to prepare a few questions in advance, but an insightful comment based on your conversation can make an even stronger statement. At the (10) _____ of an  interview, it is appropriate for you to ask when you may expect to hear; from the employer

Read the passage carefully and choose the best answer for each space. 
A village is a (1) _____place where the influence of the city is not (2)_____ much. It is indeed a very good place for rest and relaxation.

In a village, people do not live very close to one another. Their houses are far (3)_____. Each house, therefore, has a lot of (4)_____ around it. So, almost every house is (5)_____ by flowers and fruit plants and vegetables. All these make the village look (6)_____ and fresh. There are also tall trees everywhere which provide (7)_____ from the sun and keep the village (8)_____.

Some villages are surrounded by paddy fields or mountains. There are also many streams and rivers in many villages. All these (9)_____ great beauty and variety to the village scene.

The village people are friendly and helpful. They work together and live in peace. Living among (10)_____ friendly and simple people, in such a quiet place, is indeed a real pleasure.

5___________