There are a variety of causes that can contribute directly or indirectly to the extinction of a species or groups of species. Just as each species is unique, and so is each extinction. The causes (i) _______ each are varied – some subtle and complex, others obvious and simple. Most simply, any species that is unable to (ii) _______ or reproduce in its environment, and unable to move to a new environment where it can do so, will (iii) _______ out and become extinct. Extinction of a species may come suddenly when a healthy species is wiped out completely, as when toxic pollution makes its entire diversity unlivable; or may occur gradually over thousands or millions of years, such as when a species gradually loses out in (iv) _______ lor food to better adapted competitors. The question of whether more extinction in the fossil record has been caused by evolution or by catastrophe is a subject of discussion. When taking about species extinction that has been raised, most experts concern with the (v) _______ of climate change and technological disasters. Currently, environmental groups and some governments are concerned about the extinction of species caused by human beings and are attempting to combat further extinctions through various ways of conservation programs. Humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of new predators and food competitors, overhunting, and other influences.

(iv)_____

Earthquakes are amongst the most destructive natural disasters. They usually (i) _____ without any warning and result in a great (ii) _____ of life and an enormous demolition of buildings. Additionally, they may cause devastating landslides or create gigantic tidal waves which, in fact, are colossal walls of water smashing into seashores with such force that they are (iii) _____ of destroying coastal cities.

However, the vast majority of fatalities and serious injuries come about when buildings collapse. Most frequently, the earthquake lasts 30 to 60 seconds, so usually there is no time to avert the mortal (iv) _____ once the shaking starts. The savage forces of an earthquake trigger (v) _____ a complex chain reaction in the building structure when it is shaken, lifted, pushed or pulled. A building’s height, its shape and construction materials are the most significant factors deciding about the survival or collapse of the structure and, consequently, about the life or death of its inhabitants.

(ii)_______

Choose the correct answer to each of the following questions. " This kind of fruit helps to _____ the immune system."

Parents whose children show a special interest in a particular sport have a difficult decision to  (i) _____  about their children’s career. Should they allow their children to train to become top sportsmen and women? For many children, it means starting very young and school work, going out with friends and other interests have to take second place. Il’s very difficult to explain to a young child why he or she has to train for five hours a day, even at the weekend, when (ii) _____of his or her friends are playing. Another problem is of course money. In many countries, money for training is available from the government for the very best young sportsmen and women. If this help cannot be given, it means that it is the parents (iii) _____ have to find the time and the money to support their child’s development- and sports clothes, transport to competitions, special equipment etC. can all be very expensive. Many parents are understandably worried that it is dangerous to start serious training in a sport at an early age. Some doctors agree that young (iv) _____ may be damaged by training before they are properly developed.Professional trainers, however, believe that it is only by starting young that you can reach the top as a successful sports person. What is clear is that very (v) _____  people reach the top and both parents and children should be prepared for failure even after many years of training.

(ii)______

Many of the things we do depend on receiving information from other people. Catching a train, making a phone call and going to the cinema all involve information that is stored, processed and communicated. In the past, this information had to be kept on paper (i) _______  , for example, books, newspapers and timetables. Now, more and more information is put on computers. Computers play a role in our everyday lives, sometimes without US even realizing it. (ii) _______  the use of computers in both shops and offices. Big shops have to deal with very large amount of information. They have to make sure that there are enough goods on the shelves for customers to buy, they need to be ablcto reorder before (iii) _______ run out. A lot of office work in the past involved information on paper. Once it had been dealt with by people, the paper was (iv) _______ for future reference. This way of working was never particularly easy or fast. A computer system is much more (v) _______ .

(iii)_______

_________ on the phone.

Tom offered .......  Jane a ticket to the theater, but she refused to take it.

Choose A, B,C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions: 

They speak English well because they practise speak it everyday

The final year at the secondary school is the time for teenagers to get  ........  thinking about choosing jobs.

Choose the correct answer to complete the sentence. "Hardly had she begun to speak _____ people started interrupting."

 _____ European expert was invited to speak to the committee. 

Today the police are able to make use of all kinds of scientific and technological achievements in their fight against crime. This was not always the (i) _______ , however. In the early days of the British police force, during the nineteenth century, the police office’s whistle was his main way of calling for help if he got into (ii) _______ . Gradually, in the twentieth century, things (iii) _______ _ to improve.

Those police officers who were lucky enough to be given a patrol car rather than a bicycle could also took (iv) _______ of radio communications. In 1903, a new system for identifying people by their fingerprints was discovered. (v) _______ it soon proved to be one of the most significant developments in crime investigation, a seareh of the national fingerprint collection could take days, if not weeks, until computers were introduced in the 1970s.

(ii)_________

I hope  ......... that woman again.

History is full of inventions that looked good at the time, but which nobody wanted to buy. New ideas may fail for one of several reasons. Firstly, there are those which do not (i) _____ work very well when put to the lest. Then, there are the ideas which are good in themselves, but which do not fulfill a real (ii) _____. In other words people can do without them, so do not buy them. A third group are those which prove to be too expensive to manufacture. But none of these reasons explains why, in the 1990s, no new technology was (iii) _____ in replacing (iv) _____ for the home. During this time, a number of alternative technologies were invented that could have replaced the CD, but none of them (v) _____ on. The new ideas worked, were not costly to make and would have provided consumers with higher quality recordings. Despite all this, few people bought them. And this can only be explained by the fact that people who had invested in CD players and discs of their favorite music did not think the improvement in quality on offer was great enough to make it worth the effort and expense ofchanging.

(i)_______

 I like _____ blue T-shirt over there better than _____ red one. 

Carefully conducted studies that have followed the children of working mothers have not been able to shown any long-term problems, compared with children of working mothers stayed at home. My personal (i) _______  is that mothers should be allowed to work if they wish. Whether we like it or not, there a number of mothers who just have to work. There are those who have invested such a big part of their lives in establishing a career that they cannot expect to see it lost. Then there are many who must work out of pure economic necessity. Many mothers are not (ii) _______ out to be full-time parents. After a few months at home with a much loved infant, they feel trapped and isolated. There are a number of options when it refers to choosing childcare. These range from child minders and nannies through to Granny or the kind lady (iii) _______ the street. In reality, however, many parents don’t have any choice; they have to accept anything they can get. Be prepared! No matter how good the childcare may be, some children are going to protest wildly if they are left. This is a (iv) _______ normal stage of child development.Babies separate well in the first six months, but soon after that, they start to get a crush on Mum and close family members. Make sure that in first week, you allow plenty of time to help your child settle in. All children are different. Some are independent, while others are more attached to their mothers. Remember that if you want to do the best for your children, it’s not the quantity of time you spend with them, it’s the (v) _______ that matters.

(ii)_____-

The arehaeologist Howard Carter died in Egypt only five months after uncovering the tomb of King Tutankhamen in the Upper Valley of the Nile. Twenty-five others involved in the project also died within a year of the excavation of the tomb. Newspapers al the time (i) _____ the deaths to the Mummy’s Curse after a journalist (ii) _____ to have found a hieroglyphic inscription at the entrance of the tomb.

The writer Sir Arthur Conan Doyle, creator of the famous fictional detective Sherlock Holmes, also advanced the story, insisting that a “pharaoh’s curse” was (iii) _____ for the deaths. Doctors have long speculated that they fell victim to some sort of bacteria, but now Dr. Nicola Di Paolo, a kidney disease expert and amateur arehaeologist has obtained the first clinical proof the (iv) _____ growth of a highly toxic microscopic Fungus. “In tombs which have been closed for centuries, air and damp may penetrate minute cracks in the walls, permitting the growth of poisonous moulds”, Di Paulo said recently. He speculated that an explorer who entered a tomb that had been closed for centuries without using a mask must have inhaled dust full of toxins from the mould. Similarly, he said, researehers handling the mummy and other objects found in Tutankhamen’s tomb could have breathed in the toxic mould. While small quantities are thought to be harmless, Di Paolo said (v) _____ exposure could be fatal, causing severe degeneration of the kidneys and liver.

(i)_____-

The internet is like a huge city, full of many different kinds of places and people. As a real city, there are certain places which are suitable for youngsters and others which need to be avoided. The Internet neither belongs to (i) _____ is controlled by anyone person, organisation or government. It gives all of US the opportunity to create material for others to seC. On the other hand, as in ordinary life, there are those who might use it for illegal (ii) _____. The freedom of the Net offers exciting opportunities for youngsters and, (iii) _____ being aware of the possible dangers and taking steps to avoid them, they can happily explore that online world in safety. Common sense will certainly help children to use the Internet safely.It is preferable, for example, for parents to get to know (iv) _____ their children are meeting online and make sure they never give our personal information about themselves. Although it is an excellent tool for learning, playing and communicating and others, youngsters should not be allowed to become so involved that they forget other activities important to their development. Obviously, surfing as a family activity is the best solution, so that any problems that are fond can be discussed together. Parents need to thinks about safetv issues and aerree on a set of rules. óJust as youngsters are given instruction on road (v) _____, they also need to be instructed on how to travel safely along that superhighway.

(v)______

What’s in a name? In the case of the secretary, it can be something rather surprising to call a secretary “anyone who handle correspondence, keeps records and docs clerical work for others”. But while this particular job definition looks a bit (i) _____, the word’s original meaning is a hundred times more exotic and perhaps more appropriate. The word itself has been with US since the 14th century and comes the mediaeval Latin word secretaries meaning “Something hidden”. Secretaries started out as those members of staff with knowledge hidden from the ones mysteriously operating the secret machinery of organizations.A few years ago “Something hidden” probably meant kept out of sight, lucked away with all the other secretaries and typists. A good secretary was an unremarkable one, efficiently (ii) _____ orders, and then returning mouse-like to his or her station behind the typewriter, but, with the (iii) _____ of new technology, the job effectively upgraded itself and the role has changed to one closer to the original meaning. The skills required are more demanding and more technical. Companies are (iv) _____ that secretarial staff should already be highly trained in, or at least familiar with, a range of word processing packages. The professionals in the recruitment business see all these developments as improving the jobs which secretaries are being asked to do. It may also encourage a dramatic (v) _____ in office practice. In the past it was usual to regard the secretary as almost dehumanized, to be seen and not heard.

(iv)_______

We’ll call………….you at 5 o’clock 

Many species of animal and plants have disappeared from the earth. They have died out, or become extinct. But sometimes animals or plant (i) _______ can be found buried in rocks. These are called fossils. Imprints in rocks, paw prints, for example are also called fossils. Not every creature survives as a fossil. Many simply rot away completely and leave no (ii) _______ of their existence. Because many creatures and plants have disappeared without leaving any fossils, we will never know anything about them. The study of fossils, or palaeontology, to give it its scientific term, became established at the beginning of the nineteenth century. Before this researeh began, people did not believe that fossils had once been alive. Large fossil teeth were seen as evidence of a race of giants in the past, while ammonites, a very(iii) _______ type of fossil which you might easily find yourself on a beach or among rocks, were called snakcstoncs because of their snake-like shape. People believed that snakes had been turned to stone by a miracle. The most famous fossils of all are the dinosaurs. There are, of course, no dinosaurs on display in zoos. They were not (iv) _______ to extinction by humans as some animal have been, but became extinct millions of years before our own species developed. The reason why the dinosaurs became extinct is still a mystery. Many theories have connected the disappearance of dinosaurs with major climatic change. One possibility is that a gigantic meteorite crashed into the earth (v) _______ so much dust into the atmosphere that the heat of sunlight was reduced. The temperature would have fallen and, as a consequence, many types of plants and animals would have become extinct.

(iv)______