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          --With the country’s pension fund gap becoming wider than ever, retirement age should be postponed immediately. 
          ---Easier said than done.          we take all factors into account, we shall be faced with some other social problems. 
          A．UnlessB．UntilC．WhenD．Once
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A

          試題分析：句意：--隨著國(guó)家養(yǎng)老基金缺口越來(lái)越大，退休年齡應(yīng)該立刻被推遲。--說(shuō)起來(lái)容易做起來(lái)難。--如果我們不將所有的因素考慮在內(nèi)，我們會(huì)面臨很多其他的社會(huì)問(wèn)題的。用unless引導(dǎo)條件狀語(yǔ)從句，“除非，如果不”，until“直到”，when“當(dāng)…時(shí)候”，once“一旦”，根據(jù)句意選A。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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