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1. Try to learn the important words and phrases in this unit . 【学习本单元的重点单词和短语】2. Learn how to grasp information in a reading passage by the skills learned. 【学习如何通过阅读技巧来掌握文章信息】3. To arouse interest in learning about the history and geography of USA;nationality and people; customs and culture . 【激发学生了解加利福利亚的历史、地理位置、人口、  风俗和文化等。】