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    a4yy首播影院_抖音最火的中文歌曲_人禽交互在线视频 
      
        
                    
              
                              
                    
                                                        
                    
                                          
                          
                                              
                          
                            
                                
    How easy is it to group people into “races” based                               on appearance? What about using individual traits?                               Does everybody classify the same way?
                                
    Try your hand at "sorting" individuals                               and see if it matches how people think of themselves.                               Or explore how we might sort people by physical                               traits.

                           
    Activities require the Flash 6 plugin.
    		                                             
                       
                          		                                                                                            
                  
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a4yy首播影院