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           Daisy has been learning Putonghua __________ the age of five.
          A．a(chǎn)tB．sinceC．forD．in
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B

          試題分析：句意：Daisy在他從他五歲的時(shí)候就學(xué)普通話�，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.根據(jù)該句是現(xiàn)在完成時(shí)態(tài)，the age of five 是時(shí)間點(diǎn)，故選B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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