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          You have to wear a helmet and a life jacket for protection, just ___ you fall into the water.
          A. in case           C. unless          
          C. though             D. as
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A

          試題分析:句意：你必須戴上頭盔和救生衣用來保護(hù)自己，只是以防萬一你掉入水里。A萬一；B除非；C盡管；D因?yàn)�，�?dāng)……時(shí)候。根據(jù)句意可知戴這些東西的目的只是起防備作用，故答案選A。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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