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          You may easily lose your way in Shanghai ______ you don’t have a map or a guide.
          A．untilB．unlessC．thoughD．if
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D
           本題的含義是如果你沒有一張地圖或向?qū)В谏虾Ｄ慊蛟S很容易會(huì)迷路，unless表示如果不，故本題選B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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