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          The mobile phone was _____ for at least five years against the bug, but it was wrong only one year later. 

          A. ensured 
          B. guaranteed
          C. protected 
          D. promised 
          			
          

			
          
				
          
		
		
	
          
		
          
			
          
				
          
				B				
          
			
          
			
          
				
          
			
          
			
          
				
          
			
          
			
          
				
          
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          The mobile phone was _____ for at least five years against the bug, but it was wrong only one year later. 
          

          [      ]
          A. ensured 
          B. guaranteed
          C. protected 
          D. promised 
          

			
          
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				科目：高中英語(yǔ)
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          The mobile phone was ______ for at least five years against the bug，but it went wrong only one year later．
            
          A．recommended         B．guaranteed          C．protected            D．promised
          

			
          
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