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          Nowadays            of business letters are written in English.？ 
          A．two-thirdB．two-thirdsC．two-threeD．two-threes
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B 
          考查分?jǐn)?shù)。分子用基數(shù)詞分母用序數(shù)詞表示，當(dāng)分子大于一，分母要加S。故選B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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