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.
                            
               
           
           
                        
           
      3. 
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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://f4.nhde20.cn |

http://61.nhde20.cn |

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http://b45793.nhde20.cn/29.html |

http://b45793.nhde20.cn/6166c3.html |

http://b45793.nhde20.cn/c912.html |

 拍拍拍的全过程的视频