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What problem is raised in the article?
According to the author, the information published in the US Geological Survey is
meant to …
The author thinks that outer space …
According to the author, the space water sources may be used for …
The Google and Microsoft (paragraph 9) are mentioned to …
The expression “put the gears in motion” in “…it is wise to put the gears in
motion now” (paragraph 9) means …
What idea is stressed in the last two paragraphs?

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