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          A curve is a line ______ no part is straight and which has no angle.
          A．thatB．whoseC．in whichD．of which
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D

          試題分析：句意：曲線是一條線它沒有部分是直的而且沒有角。這里是定語(yǔ)從句先行詞是a curve，定語(yǔ)從句中是no part of the curve is straight，所以缺少介詞of+關(guān)系代詞（which），所以選D.
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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