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           - Air quality in our city is becoming worse and worse.
           - Yes. These days' PM2.5 readings are frightening. We must do something to _______ air pollution.
          A．reduceB．removeC．collectD．gather
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A

          試題分析：句意：——我們城市的空氣質(zhì)量正在變得越來(lái)越糟糕�！堑摹＿@些日子的PM2.5指數(shù)嚇人。我們必須采取措施減少空氣污染。A. reduce 減少；     B. remove 移動(dòng)；    C. collect收集；  D. gather聚集；根據(jù)Air quality in our city is becoming worse and worse.可知空氣質(zhì)量越來(lái)越差，因此要減少空氣污染。故選A。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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