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				 It is a good idea to ask for a map at the information center,   may prove to be very useful before you start your tour of the museum.    A. where     B. which     C. who     D. that			【查看更多】
			


		
     
    


		
    
		
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    It is a good idea to ask for a map at the information center,_____ may prove to be very useful, 
    Before you start your tour of the museum. 
    

    [     ]
    A. where 
    B. which 
    C. who 
    D. that 
    

			
    
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    It is a good idea to ask for a map at the information center,        may prove to be very 
      
    useful before you start your tour of the museum.
      
    A. where B. which C. who    D. that
    

			
    
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