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

http://3g.nhde20.cn |

http://4g.nhde20.cn |

http://5g.nhde20.cn |

http://mobile.nhde20.cn |

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http://ios.nhde20.cn |

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

http://d45793.nhde20.cn/94.html |

http://d45793.nhde20.cn/c02.html |

 把葡萄夹在下面挤出来