如表为世界七大洲面积占比表。读表完成各小题。                                                                                                                                                                                                                                                                                                             

大洲	亚洲	①	北美洲	南美洲	南极洲	②	大洋洲
面积占比	29.3%	20.2%	16.1%	12%	9.3%	7.1%	6%