题目

完形填空，阅读下面短文，掌握其大意，然后从各小题所给的四个选项中选出最佳选项。       Have you ever offered a helping hand to those who are in trouble?        One day, two ______ (1) were walking along the road to school when they saw an old woman carrying a large basket of pears. They thought the woman looked very ______ (2). They went up to her and said, “Are you going to town? If you are, we will help carry your basket.”        “Thank you,” ______ (3) the woman, “you are very kind. You see I’m weak and ill.” Then she told1米长的小棒，第1次截去一半，第二次截去剩下的一半，如此截下去，第7次后剩下的小棒长______米．