【简答题】One day, a boy found the cocoon(茧) of a butterfly and brought it home. A few days later, the boy saw a small ___31___ in the cocoon. He sat and watched for several hours as a butterfly struggled to ma...
【简答题】One day, a boy found the cocoon(茧) of a butterfly and brought it home. A few days later, the boy saw a small 36 in the cocoon. He sat and watched for several hours as a butterfly struggled to make 37 ...
【单选题】根据下面内容,回答题: One day, a poor boy who was selling goods from door to door to pay his way through school found he had only one thin dime left, and he was hungry. He decided he would ask for a meal at the...