1.                     
                          
              
                  
              
                  
      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.
                          
             
         
         
                      
         
        2. 
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http://wap.nhde20.cn |

http://3g.nhde20.cn |

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http://5g.nhde20.cn |

http://mobile.nhde20.cn |

http://vip.nhde20.cn |

http://ios.nhde20.cn |

http://anzhuo.nhde20.cn |

http://39.nhde20.cn |

http://158.nhde20.cn |

http://fc.nhde20.cn |

http://b45793.nhde20.cn/b3b50.html |

http://b45793.nhde20.cn/11d3a6.html |

http://b45793.nhde20.cn/27.html |

 安土结