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          I hate traveling by air ______ you usually have to wait for hours before the plane takes off. 
          A．becauseB．thoughC．untilD．unless
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A

          試題分析：句意：我討厭乘飛機旅行，因為你通常要在飛機起飛前等好幾個小時。A.because 因為； B.though 盡管，雖然；C.until直到……時候；D.unless除非。因為等時間所以討厭乘飛機，這是因果關系，故選A。
          考點：
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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