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提高听力同时，你还可以了解到美国历史上的一些重要事件。请感兴趣的你一听为快吧！
职称、节日、组织要大写Students protested the war in Vietnam and President Johnson began peace negotiations. Long hair, rock and roll music and illegal drugs were visible symbols of the "counter-culture" thinking of some young people during this time. Americans became more concerned about pollution. The first Earth Day was designated in 1970. The Environmental Protection Agency was created. New laws cut down on pollution. American society was changing. Slowly, the United States was embracing its multicultural population. | 
发表于 2016-8-2 12:59:25