阅读以下材料，回答有关问题：

材料一：日本在德川幕府统治时期实行禁止对外交通和贸易的政策。1633─1639年间就颁布了五次“锁国令”。这一政策使日本经济长期处于迟缓发展之中。

材料二：1853年外国舰队以武力打开日本国门，面对严峻的局面，以武士为首的倒幕派发起运动，推翻幕府统治后，拥护新继位的明治天皇仿效先进的军事、工业技术和文明成果推行了一系列改革，并主动与外国通商贸易，使日本走上了经济迅速发展的资本主义道路。在此之后100多年里，虽经二战的重创，至今日本仍然成为世界上第二号经济强国。

请回答:

   One day, in an English class, the students are having their lessons. Their teacher, a young woman is very happy. She sings some nice songs with them and then she goes to the blackboard and writes “SMILES” on it. “This is the longest（最长）word in English,” she says to the class.
   A girl stands up and says, “It has only six letters. How can it be the longest word in English?”The teacher smiles and says, “Oh, look! There is a mile（英里）between the first letter and the last one.”