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Most advocates of space exploration by the United States would not explicitly associate spaceflight with (i)_____, yet that belief, Launius and McCurdy write, is among the roots of arguments (ii)_____ human spaceflight. Throughout United States history there has been (iii)_____–seek utopia–on the frontier, and many space advocates have used that notion to make their case for exploring and settling space.
- Blank(i)
- entertainment
- irrationality
- utopia
- Blank(ii)
- questioning
- analyzing
- prompting
- Blank(iii)
- a hostile region fit only for the most self-reliant
- the ideal location for one to better oneself
- a paradise corrupted by European civilization
utopia , prompting , the ideal location for one to better oneself 显示答案
以上解析由 考满分老师提供。
