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          If there aren’t so many cars, our air would be much ____.
          A．clearB．cleanerC．cleanD．nice
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B

          試題分析：clear清楚的，晴朗的；cleaner更干凈的；clean干凈的；nice精密的，美好的。句意：如果不是有如此多的汽車，我們的空氣就會更干凈。結(jié)合語境可知選B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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