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          The government has taken some measures to solve the problem of unemployment, but it may be some time ______ the situation becomes better.
          A．beforeB．sinceC．a(chǎn)fterD．unless
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A

          試題分析：考查連詞用法�！癐t be+一段時間+before…”是固定結(jié)構(gòu)，該結(jié)構(gòu)的意思是“要過……（長）時間才……”。when“．．．．．．的時候”；since“從．．．．．．開始”；unless“除非”；根據(jù)題意：政府已經(jīng)采取措施解決失業(yè)問題，但是還要一段時間形勢才能緩解。D最佳。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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