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    【題目】______ this approach is effective in losing weight, it is not as beneficial as keeping a balanced diet.
    A.OnceB.WhileC.UnlessD.Until
    			
    


			
    

		
    
		
		
	
    
		
    
			
    
				
    
				
    【答案】B
    【解析】
    考查狀語從句連詞。句意：雖然這種方法在減肥方面很有效，但是它不如保持均衡的飲食更有益。A. Once一旦；B. While雖然；C. Unless除非；D. Until直到。根據(jù)句意和句子結(jié)構(gòu)可知，此處用while“雖然”，引導讓步狀語從句，符合語境和語法，故選B項。
    				
    
							
    
			
    
			
    
			
			
    
		
    
	
    

		
    

		





			
    
		
    
		
				
    
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