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Identify the underlined word/ phrase (A or B,C,D) that needs correcting to become an exact one. 41. She was waiting nervous in the waiting room for the interview. A B C D 42. George is not enough intelligent to pass this economics class without help. A B C D 43. I haven’t come back to London when my father last visited me. A B C D 44. Can you tell me how getting to the post office from here? A B C D 45. They asked me what did happen to their car last night, but I was unable to tell them. A B C D Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. Solar energy is a long lasting source of energy which can be used almost anywhere. To generate solar energy, we only need solar cells and the sun! Solar cells can easily be installed on house roofs, so no new space is needed and each user can quietly generate their own energy. Compared to other renewable sources, they also possess many advantages. Wind and water power rely on turbines which are noisy, expensive and easy to break down. Solar cells are totally silent and non-polluting. As they have no moving parts, they require little maintenance and have a long lifetime. However, solar energy also has some disadvantages. We can only generate solar energy during daytime because the system depends on sunlight. Besides, solar cells require large area to work effectively. The main disadvantage of solar energy is that it costs about twice as much as traditional sources such as coal, oil, and gas. This is because solar cells are expensive. Scientists are hoping that the costs of solar cells will reduce as more and more people see the benefits of this environmentally friendly source of energy. 46. What does the passage primarily discuss? A. Solar energy’s advantages over other sources of energy. B. The cost of solar energy. C. Solar energy as an alternative for fossil fuels. D. Advantages and disadvantages of solar energy. 47. What does the word they in line 4 refer to? A. solar cells. B. other renewable resources. C. advantages. D. solar energy users. 48. What is NOT mentioned as an advantage of solar cells? A. They require little maintenance. B. They are non-polluting. C. They cost little to produce. D. They operate quietly. 49. Which of the following is NOT a traditional source of energy? A. oil B. solar energy C. coal D. gas 50. What does the word benefits in line 11 mean ? A. bad points B. resources C. friendliness D. good points

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