原文:The Arctic covers some 5.5 million square miles: 8 percent of

原文:The Arctic covers some 5.5 million square miles: 8 percent of the earth's surface and 15 percent of its total landmass.
译文:北极面积为550万平方英里:占地球表面的8%,占陆地总面积的15%。
【正确答案】：北极面积约为550万平方英里:占地球表面的8%,占陆地总面积的15%(考点:“some”的正确理解与翻译)