【单选题】

{{I}}Questions 8 to l0 are based on the following news from the VO

A、At the end of the news item, you will be given 10 seconds to answer each question. Now listen to the news.{{/I}} The U.S. SpaceAgency NAS
A、says ______ orbiting Mir space station has lost its primary and backup oxygen sources.
A、America’s
Britain’s
C．Russia’s
D．Japan’s