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          精英家教網 > 高中英語 > 題目詳情
          
			
          
				
          【題目】As a(n) ________ and effective method, expressway noise barrier is a primary measure used to reduce traffic noise.
          A. correctionalB. flexibleC. economicalD. investigative
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          【答案】C
          【解析】
          考查形容詞辨析。句意：高速公路隔聲屏障作為一種經濟有效的方法，是降低交通噪聲的主要措施。A. correctional 修正的；B. flexible靈活的；C. economical經濟的；D. investigative研究的，故選C。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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