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Read the text and answer the questions. Wind energy Wind power is one of the energy sources that have been in use for a very long time. It was used in powering sailing ships, which made it possible for explorers to sail around their trade routes in distant lands. A single windmill can power crop irrigation, and cover family energy needs such as water pumping and electric lights. However, in the present time there are several windmills that are used to generate required energy mostly for industrial uses. Many of the wind turbines can capture much power all at once before feeding it to the power grid. This is commonly known as wind farms and has been in use for many years all around the world. It is only the United States that is going slow in terms of accepting this alternative energy source. Wind power is renewable, and it does not cause any air pollution. Advancement in teachnologies has brought down the cost of setting up wind power plants. However, wind energy can only be used in areas with high winds, which means that it can not be used as a source to extract energy anywhere on Earth. Wind turbines sometimes create noise disturbance and can not be used near residential areas. These disadvantage have made the use of wind energy limited to particular regions only. 1. How was wind energy used in the past? -> 2. How can wind energy be used in agriculture? -> 3. Which country is going slow in accepting wind energy? -> 4. What are the good points of wind power? -> 5. What are the disadvantages of wind energy? ->

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PRACTICE TEST 4 Time allotted: 60 min. Mark the letter A, B, C or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. 1. A. stages B. finishes C. resources D. styles 2. A. celebrate B. capture C. conserve D. compose Mark the letter A, B, Cor D to indicate the word that differs from the other three in the position of primary stress in each of the following questions. 3. A. climate B. campus C. control D. capture 4. A. exhibition B. habitable C. application D. academic Mark the letter A, B, Cor D to indicate the correct answer to each of the following questions. 5. The artist, ________ painting you have bought, is a friend of my father’s. A. whom B. whose C. from whose D. from whom 6. The lion ________ long a symbol of strength, power, and cruelty. A. is B. was C. has been D. will be 7. Will you ________ me to water the flowers before we go out tomorrow? A. remember B. suggest C. remind D. advise 8. Most developing countries are in ________ of capital and technical assistance. A. lack B. need C. shortage D. excess 9. It was a complete ________; I never meant to hurt her! A. chance B. error C happening D. accident 10. The more ________ and positive you look, the better you will feel. A. confide B. confident C. confidently D. confidence 11. The weather is ________ this week than last week. A. more good B. very good C. too better D. much better 12. His school report last term was very ________. A. satisfying B. satisfied C. satisfy D. satisfaction 13. My sister has gone to the baker’s to buy a ________ of bread. A. loaf B. piece C. bit D. packet 14. Although there is much pollution in this city, ________. A. but it is an ideal place to live B. however it is an ideal place to live C. there it is an ideal place to live D. it is still an ideal place to live Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. 15. The mechanic tried hard to mend the washing machine, but without success. A. build B. repair C. design D. break 16.lf you didn’t contribute generously, we couldn’t continue with our project. A. charitably B. generally C. officially D. locally Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. 17. Education is free, but some people pay to send their children to private schools. A. expensive B. popular C. public D. high 18. It is so good that the authorities have improved the public transport system here recently. A. changed basically B. stopped using C. made better D. made worse Mark the letter A, B, C or D to indicate the option that best completes each of the following exchanges. 19. -"Would you like milk or sugar in your tea?" “____________” A. No sugar, please. B. No, just black tea, please. C. Why not milk for me? D. Yes, a lot of milk. 20. -"What time did you phone Oggy last night?" “____________” A. I didn’t see him last night B. Oh, half of an hour C. From my home D. At a quarter past ten

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