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          ________they visited the Science Museum，they showed great interest in everything they saw.
          A．The first timeB．For the first timeC．At firstD．At the first time
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A               
                       
          試題分析：考查連詞。句意：他們第一次參觀科技博物館時(shí)，對(duì)所看到的一切表現(xiàn)出很大的興趣。The first time 第一次做某事的時(shí)候，是連詞。For the first time第一次，做狀語(yǔ)；at first 首先；D項(xiàng)是錯(cuò)誤的用法。所以選A項(xiàng)。          
          考點(diǎn) : 考查連詞
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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