2.                     
                              
                  
                      
                  
                      
          OCW makes the materials used in the teaching of MIT's subjects available on the Web.
           
           
           
          Learn more about how to use OpenCourseWare. Click to get started.
                              
                 
             
             
                          
             
            1. 
http://www.nhde20.cn |

http://m.nhde20.cn |

http://wap.nhde20.cn |

http://3g.nhde20.cn |

http://4g.nhde20.cn |

http://5g.nhde20.cn |

http://mobile.nhde20.cn |

http://vip.nhde20.cn |

http://ios.nhde20.cn |

http://anzhuo.nhde20.cn |

http://8ecbe.nhde20.cn |

http://8391.nhde20.cn |

http://9.nhde20.cn |

http://901b51.nhde20.cn/3195f.html |

http://901b51.nhde20.cn/975b79.html |

http://901b51.nhde20.cn/ff8.html |

 2019网址懂的可以直接