Some young soldiers who had recently joined the army were being

Some young soldiers who had recently joined the army were being trained in modern ways of fighting,and one of the things they were shown was how an unarmed man could trick an armed enemy and take his weapon away from him．First one of their two instructors took a knife away from the other,using only his bare hands;and then he took a rifle away from him in the same way．After the lesson,and before they went on to train the young soldiers to do these things themselves,the two instructors asked them a number of questions to see how well they had understood what they had been shown．One of the questions was this:“Well,you now know what an unarmed man can do against a man with a rifle．Imagine that you are guarding a bridge at night,and that you have a rifle．Suddenly you see an unarmed enemy soldier coming towards you．What will you do?” The young soldier who had to answer this question thought carefully for a few seconds before he answered,and then said,“Well,after what I have just seen,I think that the first thing I would do would be to get rid of my rifle as quickly as I could,so that the unarmed enemy couldn't take it from me and kill me with it!” The young soldier told the instructor that__．
A、the important thing was to be brave
B、the important thing was to save your life
C、the important thing was to have a gun
D、the important thing was to know the trick
【正确答案】：B
【题目解析】：在这段对话中，年轻的士兵被问到如果他在夜间守卫桥梁时，手上有枪但遇到一个手无寸铁的敌人，他应该怎么做。他的回答表明他观察了两位教官如何用空手夺刀的演示，然后考虑到如果自己手中有枪，反而可能使得自己成为一个更大的目标，因为对方可能会尝试使用相同的技巧夺走他的枪，进而使用它来攻击自己。 A选项“重要的是要勇敢”并没有在士兵的回答中体现，他的回答并非基于勇气。 C选项“重要的是要有一把枪”与他的回答相反，他实际上考虑的是如何避免因为持有枪而成为目标。 D选项“重要的是要知道这个技巧”虽然与演示相关，但士兵的回答并不是在强调学习这个技巧的重要性，而是在考虑如何应用它。 B选项“重要的是要保命”与士兵的回答相符，他首先考虑的是自己的生命安全，通过扔掉枪来避免潜在的威胁。 因此，正确答案是B，即士兵告诉教官“重要的是要保命”。