题目

Fear and its companion pain are two of the most useful things that men and animals possess, if they are properly used. If fire did not hurt when it burnt, children would play it until their hands were burnt away. Similarly, if pain existed but fear did not, a child would burn itself again and again, because fear would not warn the child to keep away from the fire that had burnt him or her before. A really fearless soldier-and some do exist –is not a good soldier because he is soon killed; and a dead soldier is of no use to his army. Fear and pain are therefore two guards without which men an5.25-3.5= [　　] A．1.25B．1.75 C．2D．1.35