同学们，你们喜欢旅游吗？你们都到过哪些地方？你们了解多少世界之最？
Six World Records of Travel
Have you travelled to the smallest country which is within Rome，Italy? Did you know the world's most active volcano is in Hawaii(夏威夷)？...
1．Largest Island
The largest island in the world is Greenland, with an area of about 2,175,600 km2, according to Guinness(吉尼斯)World Records.
