As some countries expand operations in Antarctica, the United States maintains three year-round stations on the continent with more than 1,000 people during the southern hemisphere's summer, including those at the Amundsen-Scott station, built in 1956 at an elevation of 9,301 feet on a plateau at the South Pole.
出自-2016年12月閱讀原文
As some countries expand operations in Antarctica, the United States maintains three year-round stations on the continent with more than 1,000 people during the southern hemisphere's summer, including those at the Amundsen-Scott station, built in 1956 at
2016年12月六級(jí)真題（第三套）閱讀 Section B
Workers tended to be diligent for the first few days of the week in any case, before hitting a plateau and then slackening off.