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          --- How many students are there in your class? --- Forty，and ________ of us are girls.
          A．three fifthsB．three fifthC．third fiveD．third fifths
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A
          

          解析試題分析：句意：你們班上有多少學(xué)生？40個，五分之三是女生。分數(shù)的表達，分子用基數(shù)詞，分母用序數(shù)詞，如one third1/3；當分子大于一時，分母要用復(fù)數(shù)形式，如two thirds；結(jié)合題意故選A。
          考點：考查分數(shù)的表達。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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