【   】
                                                 
    【   】
                  



                        
                           
                                                                              
                                  w                                                            ①   
                                                           
                                                                                                                    
                                            
                           
                                                                 
                                                                                                                                                                            
                                                                                                                                    
                                                                                                                  
                                                                                                                
                                                                                  
                                                                                              ②                                                   
                                                                        ③      
                                                                                                           
                                                                                                        ④       
                      13                                                                            
                                                                                                                                                  
                                                                                                    
                                                                            
 
      【 】
①w                    1979  
② ③                 2002  