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学术英语(理工类) Unit1-2-3-4-5全539页

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the topic is too general, ? how do you narrow it down ? to a more manageable topic?Р Can you suggest some ? appropriate topics of each ? subject?Рic engineeringРUniverseРUnit 1 ?Choosing a TopicР1 Deciding on a topicРWhat is the main idea that each essay tries to illustrate?РText 1 illustrates how hackers or unauthorized users use one way or another to get inside puter, while Text 2 describes the various electronic threats puter might face.РIn which aspect do the two essays share the same idea?РBoth focus on the vulnerability of puter.РUnit 1 ?Choosing a TopicР1 Deciding on a topicРIn which aspect do the two essays differ?РText 1 illustrates how hackers or unauthorized users use one way or another to get inside puter, while Text 2 describes the various electronic threats puter might face.

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