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          Students are required to go out in couples, especially in the evenings, with friends ______ they get into trouble.
          A．even ifB．if onlyC．in caseD．when
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
              
          試題分析:考查短語辨析。A 即使；B要是...就好了；C，以防，萬一；D當……時侯。根據(jù)句意可知此處強調(diào)以防萬一的意思，所以答案選C。句意：學生被要求要成雙成對的出入，尤其是在夜間，以防遇到麻煩。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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