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           --- Are you worried when your son often plays computer games?
           --- Yes. I think playing too many computer games ______ on teenagers.
          A．have a good effectB．has a good effect 
          C．has a bad effectD．have a bad effect
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          根據(jù)題意我對玩電腦游戲對孩子產(chǎn)生影響是擔心的，玩太多的游戲對青少年有害，
          故不選AB，玩電腦游戲是單數(shù)第三人稱，故用has，故選C。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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