一天,美国得克萨斯州某个镇子的一所小学校,有一个班的学生被老师领到了一间大空房子里。老师出去了,只剩下这些学生们静静地待在那里。几分钟后,有的同学就沉不住气了,东张西望,显得很烦躁的样子,而有的同学则始终默默地观察着周围的一切。一会儿,老师领着一个陌生人走了进来。陌生人和蔼地来到孩子们的中间,给每个人发了一块包装精美的糖果,并说: One day a class of students from a primary school in a town in Texas, United States, was taken to a large empty house by a teacher. The teacher went out, leaving only the students to stay there quietly. A few minutes later, some students can not stand still, looked around, looked very upset look, while some students are always silently watching everything around. After a while, the teacher came in with a stranger. Strangers came to the middle of the children kindly and gave each one a beautifully packaged candy and said: