地球的最大周长约为（    ）

【历史上重大改革回眸】阅读材料，完成下列要求。

雍正五丰，（官员）田文镜上疏，请将苛虐佃户的乡绅按照违例例议处，衿（秀才）监吏员则革去职衔。雍正帝提出，他只考虑绅衿欺凌佃户，却没有顾及佃农拖欠地租及欺瞒田主的问题，命再议论。于是定出田主凌虐佃户及佃户欺瞒田主之例，规定秀才监生“私置板棍，擅责佃户，勘实，乡绅照违制律议处，衿监吏员革去衣顶职衔，照律制罪……如将佃户妇女占为婢妾，皆革去衣顶职衔，按律制罪。至于奸玩佃户，拖欠租课，欺瞒田主者，照律治罪，所欠之租，照数返给田主。”清朝法律，凡人之间拷打监禁，罪止杖八十。

——摘编自白寿彝《中国通史》

根据短文选择正确答案。

The future is coming! All over the world there are many new ideas(想法) for new places to live and work in. Some of them will be in the sea! They will be very big and lots of people will live and work in them. The Americans are planning to build a town called Atlantis City. It will be in the sea，about five miles away from the land. But the most exciting idea comes from Japan. It is called Acropolis. Acropolis will be a huge sea city, with parks, schools, a hospital and an airport. And it will move! It will travel slowly around the world. There are just two problems. Acropolis will cost (花费) a lot of money to make. And for people who get seasick, it won't be much fun.