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          —_____chapter in Oxford English often consists of four parts．
          —That’s right．And this chapter mainly talks about _____environmental problems．
          A．The；anB．An；theC．the；theD．A；the
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D
          D 考查冠詞。泛指用a/an，特指用the。這里是泛指“一個章節(jié)”，故用a，特指“這個章節(jié)”用the。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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