【单选题】
            
 Efforts to reach the injured men have been ______ because of a sudden deterioration in weather conditions.
A.enforced
B.intensified
C.confirmed
D.strengthened
        
        
			
            
            
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				根据网考网移动考试中心的统计,该试题:
21%的考友选择了A选项
52%的考友选择了B选项
13%的考友选择了C选项
14%的考友选择了D选项