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				 Wind power is an ancient source of energy        we may return in the near future.    A. on which      B. by which      C. to which      D. from which			【查看更多】
			


		
           
          


		
          
		
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          Wind power is an ancient source of energy        we may return in the near future.
          A．on whichB．by whichC．to whichD．from which
          

			
          
				查看答案和解析>>
			
          
		
          
				
          
									
           Wind power is an ancient source of energy ____we may return in the near future.
          A．on whichB．by which
          C．to whichD．from which
          

			
          
				查看答案和解析>>
			
          
		
          
				
          
									
          Wind power is an ancient source of energy        we may return in the near future.
          A．on whichB．by whichC．to whichD．from which
          

			
          
				查看答案和解析>>
			
          
		
          
				
          
									
          Wind power is an ancient source of energy        we
may return in the near future.
          


          A．on which          B．by which          C．to which          D．from which
          


           
          

			
          
				查看答案和解析>>
			
          
		
          
				
          
									
           Wind power is an ancient source of energy ____we
may return in the near future.
          


          A．on which                              B．by which
          


          C．to which                              D．from which
          


           
          

			
          
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