题目

After a car accident put me into the hospital，I felt angry about the way my life was turning out．The doctors repaired the major damage done to my  41  ．But 1 was lying there feeling pretty sorry for myself．I didn’t care to see anyone or to talk to anyone． For a week the nurses had been good about leaving my door closed．But one morning 1 was awakened by  42  of people in the hallway． Since 1 was still feeling  43  for myself．I didn’t wake up in a pleasant mood．As I pushed the button to ca11 the nurse．I saw a little boy in the hallway，holding a teddy bear in one下列关于物质分类正确的是（　　）A．铜、铅笔芯、橡胶是导体B．塑料、干木棒、陶瓷是绝缘体C．铁、冰、蜡是晶体D．金刚石、食盐、水银是固体