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://anzhuo.nhde20.cn |

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http://4f8.nhde20.cn |

http://9d.nhde20.cn |

http://901b51.nhde20.cn/45f3ff.html |

http://901b51.nhde20.cn/903e3.html |

http://901b51.nhde20.cn/09d2.html |

 补课时破了数学老师