以下物质保存方法不正确的是（　　）

请你观看漫画，漫画中“自满的人都不满，自大的人都不大”这句话说明了（      ）

①现实生活中凡是自满、自大的人，其实都是毫无根据地自以为是和盲目乐观
②自满、自大是我们事业成功的大敌，做人应从不自满开始
③自满的人都不满意自己的行为，自大的人总感到自己不够强大
④现实生活中我们应当自信，但不可自大自满，因为那样只能使自己夜郎自大，盲目乐观

   A lift is wonderful. It is really only a small room. Rooms usually stay in one place. Lifts travel up and down all day long.
    Sometimes a worker stands in the lift. He or she operates it up and down. In modern lifts there is no worker.  People walk in. They know which floor they want. They push a button and the lift goes to that floor. It is all very fast and easy.
   Lifts are very important to us. Why? Think about a tall building. Maybe it has twenty floors. Maybe it has fifty or more. Who can walk up all the stairs? Maybe people can climb them one time. Can someone climb thirty floors to an office every day? Can small children walk up to their room on the twenty-fourth floor? Can their mothers and fathers carry food up all those stairs? Of course not.
   We can have high buildings because we have lifts. We could not have all the beautiful tall buildings in the world without lifts. They are really wonderful.