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1987年,笔者以国际文化交流团交换教师的身份(AFS Exchange Teacher),在美国芝加哥地区学习和工作了一个学年.频繁的社会生活和节假日旅游,给我提供了
In 1987, I studied and worked for a school year in Chicago, USA, with the AFS Exchange Teacher. Frequent social life and holiday travel provided me with