var opt0 = ["一级分类|0", "二级分类|0", "三级分类|0"];
var dsy = new Dsy();
dsy.add("0", ["外语语言|1"]);
dsy.add("0_0", ["雅思托福|19","小语种|21"]);
dsy.add("0_0_0", ["雅思|101"]);
dsy.add("0_0_1", ["法语|110","德语|111","西班牙语|112","意大利语|113","日语|1266"]);