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          I was just at the school gate    the bell rang.
          A．whileB．becauseC．ifD．when
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D

          試題分析：句意：鈴響地時(shí)候我剛好到學(xué)校門口。A. While當(dāng)......的時(shí)候；B. Because因?yàn)�；C. If是否，如果；D. When當(dāng)....時(shí)候。此處要區(qū)別when 和while. when即可表某一點(diǎn)時(shí)間，也可表某一段時(shí)間；while只能表示某一段時(shí)間，不能表示某一點(diǎn)時(shí)間。這里表示的是鈴響的那個(gè)時(shí)刻，所以用when.故選D。
          考點(diǎn)：
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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