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          You can get the best result ______you carry out the experiment under the desired conditions.
          A．what ifB．even ifC．only ifD．a(chǎn)s if
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C

          試題分析：考查連詞：A. what if倘若…又如何？B. even if即使，C. only if只有如果…，D. as if好像，句意：只有你在需要的條件下做實驗才能得到最好的結(jié)果。選C。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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