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          Doing eyes _______ every day is good for our eyes. 
          A．exercises B．exercise C．healthD．healthy
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B. 
          該題考查的用法，既是動(dòng)詞（意思為：鍛煉），又是名詞，當(dāng)“鍛煉”講時(shí)是不可數(shù)名詞，當(dāng)“作早操或保健操”講時(shí)是可數(shù)名詞。故選B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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