謎語帶答案：when columbus discovered america，where did he stand-
      
		
		
		
		
		
		
		
		
		
		
	
      
    
                	
	
      
	    
      on his feet.
          	
      
    	            
      		    
    	
      
        	    	
      
		
	       
		
		
	     
		
	    		
		
        	
	
      

      

    


      
	
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