1. 完形填空
    As l was passing by the elephants，I suddenly stopped．I was1  by the fact that a small rope(绳子)is holding these 2 animals．The rope was tied to their front legs．It was true that the elephants could3 the rope at any time．But they did not．I asked the trainer nearby 4 ．these elephants just stood there and didn't try to get away．
    “Well，''he said，“when they are very young and much smaller．we use the same size rope to 5 them．At that age，it's enough to hold them．As they grow up，they are used to6  that they cannot break away．They believe the rope can still hold them，so they never try to break free．”l was amazed．These animals could7 any time break free from their bonds，but because they believed they couldn't，they were  8 right where they were．
    Like the  9 ，some of us hang onto a belief that we cannot do something，only because we 10  at it once before．