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           Beijing ________ a lot over the years. Now it has become one of the biggest 
          ______ in the world.
          A．changes; citiesB．changed; city
          C．has changed; citiesD．changed; cities
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          

          解析試題分析：句意：這些年北京變化很多。現(xiàn)在它已經(jīng)成為世界最大的城市之一。與時(shí)間短語(yǔ)over the years.連用時(shí)，用現(xiàn)在完成時(shí)。由one of來(lái)修飾時(shí)，后面用名詞的復(fù)數(shù)形式。故選C。
          考點(diǎn)：考查時(shí)態(tài)的用法。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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