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          You will fall behind others _________ you work hard.
          A. if                  B. when                C. unless
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C

          試題分析：句意：如果您不努力學(xué)習(xí)，你就會(huì)落后。If如果；when當(dāng)……時(shí)候；unless如果不，除非。故選C。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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