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          Charles Babbage is generally considered ________ the first computer. 
            
           A. to invent     B. inventing     C. to have invented     D. having invented 
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
             
          解析:
               
          被動語態(tài)后用不定式連接，根據(jù)句意用完成式。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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