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          Many scientists say that it’s important for us to have ______ food in our diet.
          A．a(chǎn) variety ofB．a(chǎn) great dealC．a(chǎn) large number ofD．a(chǎn) good many
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A
          B和C后跟不可數(shù)名詞，D跟可數(shù)名詞復(fù)數(shù)， Food為集體名詞。選A a variety of food 為各種各樣的食物。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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