点击下载：吉林大学：《大学英语泛读》课程PPT教学课件（book 3）Unit 20 Covered Wagon Days
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Warm-up Activity 1.Which sentence sums up the main idea of the essay?● Warm-up Activity ◼ 1. Which sentence sums up the main idea of the essay?
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点击下载：吉林大学：《大学英语泛读》课程PPT教学课件（book 3）Unit 20 Covered Wagon Days
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