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Language work. Words often confused.Date: 2015-10-07; view: 520. Speaking Exercise 83. Give definitions for the following terms. Magnetic field Solenoid Magnetic force Permanent Magnet
Exercise 84. Work in groups of three or four. Discuss the questions below about the nature of a magnetic field. Present your ideas to other groups. 1. Describe the two types of electron motion that produce the magnetic field in a bar magnet. 2. Of the two types of electron motion you descrbed above, which one is more important in terms of material's overall magnetic field? 3. Explain why certain substances such as iron are magnetic but most substances are not.
Exercise 85. Fill in: a) bring or take in the correct form. 1. Please … this box outside to the garden. 2. … me a chair from the kitchen, please. 3. He … the children to play in the park yesterday evening. 4. Will you … me the dished from the dining room, please? b) on time or in time. 1. Bill is always late. He's never … for work. 2. I woke up just … to see the sunrise this morning. 3. We're having guests tonight so make sure you're home … to welcome them. 4. If we hurry, we'll get to the station … to catch the train. c) at the beginning, in the beginning, at the end or in the end. 1. She didn't feel very confident … of her career, but she has changed a lot since then. 2. … the work was interesting, but now I find it boring. 3. It was a difficult situation, but … everything worked out nicely. 4. There is a revision chapter …of the book. 5. She didn't know anyone … but then she made lots of friends. 6. … of the week, the weather was awful, but then it improved. 7. The big supermarket is … of the street. 8. The story has a tragic beginning, but fortunately everything turns out well … .
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