4、ttp://c_elearn.yxtc.net/20. Chinese Learning www.learnmandarinonline.org21.直映汉语 http://www.mytino.com/learn_chinese/index.php22. Echineselearning www.echineselearning.com23.ChinesePhrasesforTravelers http://chinese.travel-way.net/24.HSK网站 http://www.hsk.org.cn/25. C