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          Schools in the north tend to be better equipped, ______ those in the south are relatively poor. 
          A．a(chǎn)sB．unlessC．whenD．while
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D

          試題分析：考查連詞。A因為；B除非；C當……時候；D然而。句意：北方的學校趨向于更好的裝備，而那些南方的學校相對差點。故D正確。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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