Eco102、103教材
请问以前的学长学姐们,eco上课用教材的时候多吗?textbook实在太贵了,加起来300多美金,买不起啊http://static.tieba.baidu.com/tb/editor/images/client/image_emoticon9.pnghttp://static.tieba.baidu.com/tb/editor/images/client/image_emoticon9.pnghttp://static.tieba.baidu.com/tb/editor/images/client/image_emoticon9.png用电子版的有什么影响吗
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