From Ms. Yan. PPT Premium Version. Edited by Simon Xu, and still uploading. Copyright from Ms. Yan in ULC. Only for academy. --Lesson4 Money 精华知识点PPT摘录，覆盖AS所有内容，持续更新中！ULC经济老师王艳版权所有，仅作为学术共享。

From Ms. Yan. PPT Premium Version. Edited by Simon Xu, and still uploading. Copyright from Ms. Yan in ULC. Only for academy. --Lesson4 Money 精华知识点PPT摘录，覆盖AS所有内容，持续更新中！ULC经济老师王艳版权所有，仅作为学术共享。