老師我是觀二甲的鄭惠方..禮拜3我上台報告了..這是我修改之後的報告..

http://www.nakido.com/view/D9AA1510CA78F2E2274DDD92ECB530221971FD37/%e9%b6%af%e6%ad%8c%e9%8e%ae+%e9%84%ad%e6%83%a0%e6%96%b9.ppt?size=1248768