Read the following passage and answer the questions that follow:Science not only provides knowledge about nature but also provides means for controlling nature. So besides general ideas, science also affects practical affairs and everyday life. Perhaps the most obvious example concerns transport. Up to the end of the eighteenth century, transport on land differed very little from what it had been in Roman times.A Roman officer in second-century Britain could get from London to New York just about as quickly and comfortably as an eighteenth-century gentleman. Owing to the compass and to improved design of ships, sea transport had improved a little, but not much. Then came the invention of the steam-engine, and its improvement, which was dependent on the general scientific knowledge of the time.Steamships, and railways with steam engines, completely changed the business of travel and of the transport of goods. The internal combustion engine, again based on the scientific study of heat and how it is generated by gas explosions, made possible first the motor-car and the diesel engine and then the aeroplane. Now people are talking of the possibility of flying at five hundred miles an hour or more by means of rocket propulsion in the thin higher layers of the atmosphere.It is interesting to note down the highest speeds possible for land, sea and air travel every ten years from 1820 to the present day. Similarly with communications.Not only did the steam engine, and then the aeroplane, speed up the sending of letters and newspapers, but the discoveries about electricity made possible first the telegraph, then the telephone, then wireless, and now television. As a result of science, the possibilities of tying the world together by the quick transmission of facts and ideas have completely changed in less than a century.Or again, think of the lighting of houses and streets, candles-oil lamps – gas – arc-lights – electric filament lamps – now vapour discharge lighting. Or sanitation-all it means to have pure water in every house. Or the differences between a surgical operation before anaesthetics and aseptic method, and a surgical operation today.Not only has science provided all kinds of new substances and machines and sources of power, but in doing so it has changed our everyday life. However, we should not imagine that the practical applications of science are always necessarily a benefit. We have already described how recklessly men are exploiting the resources of nature.This waste would not be possible but for the applications of science. Our industrial civilization makes new demands for sources of power: mining responds with increased activity and new scientific methods for getting coal and oil more cheaply and more quickly.Improved transport brings men more easily into the remote parts of the earth, and enables them to kill the wild creatures. The applied science which makes it possible for everyone to have their morning newspaper causes the reckless cutting down of forests to provide wood for making paper from.1. How are we exploiting the resources of nature?2. How do we get paper?3. What does science provide to us?4. What made a motor-car possible?5. What has changed our everyday life?Choose from the passage the words that mean:7. Produces a change in somebody or something8. Reformed or Modified.9. Free from harmful bacteria.