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          —It smells terrible. What has happened here?
          —Look, there is a chemical factory_____ much waste gas.
          A. pour        B. pouring      C. poured  
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B

          試題分析：句意：好難聞，這里發(fā)生了什么？看，有一個化工廠正在傾倒大量的廢氣。根據(jù)語境正在傾倒廢氣，所以用現(xiàn)在進(jìn)行時態(tài)，故選B
          點評：動詞的時態(tài)是學(xué)習(xí)英語過程中非常重要的知識。而很多的題目，必須通過上文的語境判斷得知時態(tài)�，F(xiàn)在進(jìn)行時表示動詞在某個點時間正在進(jìn)行，本題不難，平時加強(qiáng)記憶，理解即可。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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