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          I ______ my mind to study harder since I visited the Shanghai Supercomputer Centre.
          A．a(chǎn)m making upB．have made upC．made upD．had made up
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B

          試題分析：句意:自從我參觀了上海超級電腦中心，我就下定決心更努力的學(xué)習(xí)。本句考查的是時態(tài)，因?yàn)榫渲杏衧ince，自從，它常和現(xiàn)在完成時連用，故本題應(yīng)該選B。make up one’s mind to do sth. 是一個句型，下定決心去做某事。A選項(xiàng)是現(xiàn)在進(jìn)行時；C選項(xiàng)是一般過去時；D選項(xiàng)是過去完成時。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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