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          A tourist will easily lose his way in Shanghai_____ he has a map or a guide.
          A．if B．since C．while D．unless 
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D
          

          解析試題分析：句意：除非旅游者有向?qū)Щ蛘呤堑貓D，否則很容易在上海迷路。if如果，since自從，while在...期間，unless除非。根據(jù)句意，可知選D。
          考點(diǎn)：考查連詞。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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