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          They wonder________robots will make humans lose their jobs or not
          A. that                   B. if                   C. whether
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          that那個(gè)，引導(dǎo)賓語從句不做句子成分，只起引導(dǎo)作用；if是否，如果；whether是否。句意：我想知道機(jī)器人是否會讓人們失去他們的工作。在表示是否時(shí)，whether常和or not搭配使用，故選C。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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