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://9228d2.nhde20.cn |

http://c.nhde20.cn |

http://4987.nhde20.cn |

http://d45793.nhde20.cn/7d08.html |

http://d45793.nhde20.cn/2534.html |

http://d45793.nhde20.cn/a8fed.html |

 两个洞一起进入感觉