Part One：积分榜

Part Two：课程内容

Part Three：音频材料

鸡蛋音&噘嘴音http://note.youdao.com/share/index.html?id=a28af985cf806c2d5c226e1bf1d7a267&type=notebook#/WEBcd1a5cc8c65dc37c1ddaa574d80ed788

双元音/ɔɪ/（此链接包含/ɔɪ/、/ɛr/、/ɪr/、/ur/四个双元音）http://note.youdao.com/share/index.html?id=a28af985cf806c2d5c226e1bf1d7a267&type=notebook#/WEB83dcdea08d0679d33176a638c9ab9734