Scientistshavefound“significant”amountsofwaterinacrate...

问题详情：

 Scientists have found “significant” amounts of water in a crater (火山口) at the moon’s south pole, a major   1   (discover) that will dramatically revise the description of the moon   2   a dead world and likely make it a more attractive destination for future human space missions.

    “The moon is alive,” declared Anthony Colaprete, the chief scientist for the Lunar Crater Observation and Sensing Satellite mission,   3   used a rocket on Oct. 9 to punch a hole about 100 feet across in the moon’s surface, and then measured about 25 gallons of water in the form of vapor and ice.   4   that’s not enough to swim in, it could indicate sufficient water in permanently shaded craters at the poles for future astronauts to live off the land.

    NASA’s plans, currently under review by the Obama administration, call for   5   return to the moon at the end of the next decade, and   6   (construct) of a lunar base in which astronauts could live and work for months at a time.

    The presence of large quantities of water would make that plan more   7   (practice), since water could be used for drinking, breathing and even making rocket fuel.   8  , a resource-rich moon could also serve as the perfect low-gravity launch-pad (发*台) for missions that would carry astronauts and   9   families elsewhere in the solar system,   10   (realize) the dreams of generations of science-fiction writers.

【回答】

1 discovery     2. as      3 which      4 While/Although/Though

5 a        6 construction    7 practical      8 Besides 

9 their     10 fulfilling

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