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           The meeting         for two hours.
          A. has begun               B. has been on             C. began
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B

          試題分析：句意：會(huì)議開始了兩個(gè)小時(shí)了�，F(xiàn)在完成時(shí)可以用來表示發(fā)生在過去某一時(shí)刻的,持續(xù)到現(xiàn)在的動(dòng)作（用行為動(dòng)詞表示）或狀態(tài)（be動(dòng)詞表示）常與for（+時(shí)間段）,since（+時(shí)間點(diǎn)或過去時(shí)的句子）連用. 現(xiàn)在完成時(shí)中，非延續(xù)性動(dòng)詞不能與for和since引導(dǎo)的表示一段時(shí)間的狀語連用，通常是用相應(yīng)的延續(xù)性動(dòng)詞來代替。begin 對(duì)應(yīng)的延續(xù)性狀態(tài)詞是 be on 。故選B
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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